MedWorm.com provides a medical RSS filtering service. Over 6000 RSS medical sources are combined and output via different filters. This feed contains the latest items from the 'Journal of Food Safety' source. Thu, 18 Mar 2010 16:43:20 +0100 http://www.medworm.com/index.php?rid=3326718&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00211.x This study demonstrates the potential of essential oils as antifungal preservatives for tomato fruits that are susceptible to postharvest decay caused by fungi. Examination of various concentrations of essential oils from ajowan (Carum copticum L.), fennel (Foeniculum vulgare Mill.) and caraway (Carum carvi L.) on Penicillium digitatum and Alternaria alternata in this study showed promising prospects for the utilization of essential oils. In vivo experiments showed that essential oils used could reduce postharvest diseases on tomato fruits caused by P. digitatum and A. alternata. So, essential oils can be used as a potential source of sustainable eco-friendly botanical fungicides, after successful completion of wide-range trials. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3326718 Wed, 03 Mar 2010 00:00:00 +0100 3326718 http://www.medworm.com/index.php?rid=3326717&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00212.x This study was designed to evaluate the influence of organic substances (citric acid [CA], lactic acid [LA] and potassium sorbate [PS]) on chilled chicken skin microflora. Application of organic substances inhibited microbial growth and prolonged the shelf life of carcasses. Microbial reduction after application of organic acids was significant in case of 10% w/v CA and 2% v/v LA, and the most effective was combination of 2% v/v LA with 0.2% w/v PS. Sensory analysis found that application of 10% CA was not acceptable. However, chickens treated with the mixture showed better organoleptic properties than control. The use of food preservatives in combination may contribute to significant reductions of spoilage and pathogen microbes on poultry. Lactic acid (LA), which is a naturally occurring ... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3326717 Wed, 03 Mar 2010 00:00:00 +0100 3326717 http://www.medworm.com/index.php?rid=3326716&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2010.00213.x In this study, we demonstrated the effectiveness of sakacin A-containing pullulan films to control Listeria monocytogenes growth and the applicability of active pullulan films as a means of delivering a bacteriocin directly to a food surface. Pullulan films require less antimicrobial, demonstrate longer antimicrobial activity and allow for controlled migration of the molecule from film to the food matrix, as compared with the direct addition of sakacin A to ready-to-eat meat products. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3326716 Wed, 03 Mar 2010 00:00:00 +0100 3326716 http://www.medworm.com/index.php?rid=3326715&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2010.00214.x Pistachio nut is an important agricultural and economical commodity in Iran. Annually, several hundred tons of pistachio nuts are produced in Iran. Therefore, the country earns substantial amount of hard currency from exporting pistachio nuts. In addition, livelihood of some million people in pistachio-growing area depends on this crop. Traditionally, the European Union (EU) has been one of the major destinations of pistachio exported from Iran. Pistachio nuts are rich sources of fat, and contain linoleic and linolenic fatty acids. However, they are among the commodities with the highest risk of aflatoxins (AF) contamination. As a consequence of detection of unacceptable level of AF in pistachio consignments arriving in EU ports in 1997, special conditions were imposed on Iran pistachio en... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3326715 Wed, 03 Mar 2010 00:00:00 +0100 3326715 http://www.medworm.com/index.php?rid=3326714&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2010.00215.x The aim of this study was to investigate the influence of acid adaptation in the survival of Salmonella Enteritidis (SE86) and Salmonella Typhimurium (ST99) during exposure to simulated gastric fluid (SGF) and in intestinal infection of Rattus norvegicus. Acid-adapted and nonadapted Salmonella strains were exposed to SGF (pH 1.5) and were inoculated by gavage in adult rats. Results indicated that acid-adapted SE86 survived significantly better (P < 0.05) than nonadapted SE86, nonadapted ST99 and acid-adapted ST99 in SGF. Nonadapted microorganisms were observed in higher counts in feces than acid-adapted strains, while acid-adapted microorganisms demonstrated higher counts in intestine samples, suggesting intestinal invasion capacity. Acid-adapted SE86 was recovered in higher counts from il... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3326714 Wed, 03 Mar 2010 00:00:00 +0100 3326714 http://www.medworm.com/index.php?rid=3326713&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2010.00216.x This study analyzed the knowledge levels of employees who work in the food and beverage departments. It has been found that there is a need to develop a state policy regarding education to be given to consumers and employees about food safety knowledge and practices. Education should be repeated with specific intervals to ensure that learnt information is turned into attitudes and behaviors; and procedures and processes should be controlled regularly. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3326713 Wed, 03 Mar 2010 00:00:00 +0100 3326713 http://www.medworm.com/index.php?rid=3326712&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2010.00217.x The ability of Listeria monocytogenes to survive and grow at refrigeration temperature in a wide spectrum of foods is a public health concern. Essential oil of clove (Syzium aromaticum) was investigated for its ability to inhibit the growth of this pathogen in food. Three strains of L. monocytogenes (106 cfu/g) were inoculated on fresh-cut salmon and stored (4C and 25C) for 2 weeks. The effect of clove oil (1% and 2%) on the growth of cells was determined. The results proved that all strains survived and grew at 4C and 25C. In addition, we noted that the growth was inhibited under storage conditions in the presence of clove oil (1% or 2%). Listeria counts in treated samples were 1[ndash]4 log10 cfu/g less compared with controls at different intervals during storage. The results revealed th... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3326712 Wed, 03 Mar 2010 00:00:00 +0100 3326712 http://www.medworm.com/index.php?rid=3326711&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2010.00218.x In this report, we described standardization of a novel multiplex-polymerase chain reaction (PCR) assay for simultaneous detection of four important genes associated with the Staphylococcus aureus viz., SEB, Tsst, genus-specific nuclease (nuc) and Fem genes along with an internal amplification control (IAC), which has now become mandatory in diagnostic PCRs, particularly when tested on environmental or food samples. This mPCR method is sensitive enough to detect cells as low as 103 cfu/mL or /g of the food samples. When evaluated on 136 food and environmental samples, the system detected 4 SEB-positive S. aureus strains. The S. aureus strains that have been identified to contain the SEB gene in the mPCR were unequivocally detected for the toxin expression by the TECRA kit. mPCR produced a ... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3326711 Wed, 03 Mar 2010 00:00:00 +0100 3326711 http://www.medworm.com/index.php?rid=3326710&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2010.00219.x Interaction between the enteric pathogen Salmonella typhimurium and the luminal surface of the intestine provoke an acute inflammatory response mediated in part by various inflammatory molecules. Surfactant-like particles (SLP) are known to cover the surface of the intestinal epithelium, act as lubricants and/or as a vehicle to deliver digestive enzymes to the luminal fluid. Recently we have shown that SLP plays an important protective role during microbial insult. The data suggested that SLP-induced diet prevents the damage of intestinal villi caused by S. typhimurium infection. The present study was designed to assess the role of SLP on secondary signaling molecules during S. typhimurium infection. The Peyer's patch, intraepithelial and lamina propria mononuclear cells were analyzed unde... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3326710 Wed, 03 Mar 2010 00:00:00 +0100 3326710 http://www.medworm.com/index.php?rid=3266709&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00210.x Aflatoxins (AFs) are highly toxic and carcinogenic secondary fungal metabolites and have been detected in various food commodities including pistachio nuts. One hundred samples of pistachio nuts, purchased from retail shops and local markets in Esfahan province of Iran from September to November 2007, were analyzed for AFs content by immunoaffinity column (IAC) cleanup with liquid chromatography and fluorescence detection. Results showed that the frequency of total AFs (AFT), aflatoxin B1 (AFB1), aflatoxin B2, aflatoxin G1 and aflatoxin G2 in pistachio samples were 95, 95, 42, 64 and 28%, respectively. Thirty-six and 29% of pistachio nuts exceeded the maximum tolerable limit (5 and 15 µg/kg) set for AFB1 and AFT by European Union regulations, respectively. The present paper is the first r... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3266709 Fri, 12 Feb 2010 00:00:00 +0100 3266709 http://www.medworm.com/index.php?rid=3266715&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00196.x The performance of a Loop-mediated isothermal amplification (LAMP) assay for detecting food-borne pathogen Listeria monocytogenes was presented in this paper. Three pairs of primers were specially designed for recognizing eight distinct sequences of iap gene (P60 extracellular protein, invasion associated protein IAP). Time and temperature conditions for amplification of L. monocytogenes were optimized to be 40 min at 63C. Detection limit level for artificially contaminated raw milk samples by the LAMP assay was 186 cfu/mL corresponding to 8[ndash]10 cells per reaction tube, while the detection level by conventional PCR was 1.86 × 105 cfu/mL. Data on natural raw milk samples indicated that the LAMP method was highly specific and sensitive, giving 91.67% concordance with the ISO 10560 refe... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3266715 Thu, 11 Feb 2010 00:00:00 +0100 3266715 http://www.medworm.com/index.php?rid=3266714&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00204.x Yersinia enterocolitica, Staphylococcus aureus, Aeromonas and Salmonella are among the most important foodborne bacterial pathogens. The majority of human infections caused by all of these organisms are associated with ingestion of undercooked and contaminated meat, dairy products and water where in the secreted bacterial toxins lead to foodborne intoxications. We, here, report a new multiplex polymerase chain reaction (mPCR) assay for the simultaneous detection of these important foodborne bacterial pathogens. The mPCR targeted Ail and virF genes of Y. enterocolitica, nuc and entB genes of S. aureus, aerA and 16S rRNA genes of Aeromonas and invA, an invasion protein A gene of Salmonella. An internal amplification control designed to check the false negative reactions in mPCR was also incl... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3266714 Thu, 11 Feb 2010 00:00:00 +0100 3266714 http://www.medworm.com/index.php?rid=3266713&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00205.x This study was performed to define the mycoflora of apples and patulin levels in apples that were used for juice production. This approach is useful to evaluate the quality of apples and the effect of processing on patulin to determine if the toxin level can be managed through postharvest procedures. Besides, information about patulin levels in juices is important to contribute for establishing national regulation. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3266713 Thu, 11 Feb 2010 00:00:00 +0100 3266713 http://www.medworm.com/index.php?rid=3266712&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00206.x This study demonstrates the importance of the inoculation method applied in assessing the effectiveness of a sanitizing method. Moreover, the effect of ozone treatment in comparison with the sodium hypochlorite and organic acid treatments that are currently being used by the industry for the disinfection of fresh-cut vegetables were evaluated. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3266712 Thu, 11 Feb 2010 00:00:00 +0100 3266712 http://www.medworm.com/index.php?rid=3266711&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00207.x This study clearly shows how the effectiveness of chlorine is modified when treatments are applied to tomatoes several days after the contamination with a human pathogen took place. The diminished effect of disinfection treatments suggests that microorganisms colonizing on surfaces become more resistant to germicides, and that biofilms may provide protective sites, or both. The results also reinforce the concept that once contaminated, bacterial pathogens can persist on tomatoes throughout a normal distribution time. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3266711 Thu, 11 Feb 2010 00:00:00 +0100 3266711 http://www.medworm.com/index.php?rid=3266710&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00209.x In conclusion, taking into consideration the importance of S. aureus in food microbiology and the antimicrobial effects of the EOs which are commonly used for flavoring, the development of artificial neural network models are beneficial in order to predict the effects of Z. multiflora EO, temperature and pH on the probability percentage of growth initiation of S. aureus. Staphylococcus aureus is an important pathogen in food safety. Staphylococcal food poisoning is widespread and quite frequent. It is also among the four most common causes of foodborne illnesses. One of the most important purposes of food safety is inhibition of this microorganism growth. Substitution of traditional food preservatives by natural ones is a growing interest in food safety. Essential oils are aromatic oily li... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3266710 Thu, 11 Feb 2010 00:00:00 +0100 3266710 http://www.medworm.com/index.php?rid=3200260&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00203.x Campylobacter species have been identified as the major cause of acute bacterial enteritis in the U.K. It has been suggested that the role of sheep in the epidemiology of Campylobacter has been underestimated. The aim of the present study was to determine the prevalence of Campylobacter in sheep sent for slaughter into an abattoir in Scotland and the prevalence of Campylobacter on the carcasses as a potential risk for human campylobacteriosis. Fecal samples and swabs (from fleeces and carcasses) were collected and processed using standard laboratory methods. The prevalence of Campylobacter obtained was unexpectedly high (49% positives from fecal samples by direct plating; 64% from fecal samples after enrichment; 95% from the fleeces after enrichment and 90% from the carcasses after enrichm... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3200260 Fri, 22 Jan 2010 00:00:00 +0100 3200260 http://www.medworm.com/index.php?rid=3200259&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00202.x Commercial squid Jeotkal was purchased, radiation-sterilized, and inoculated with a 3-strain cocktail of each Listeria monocytogenes (ATCC 19114, 19115, and 19111), Staphylococcus aureus (ATCC 6538, 25923, and 29213), and Vibrio parahaemolyticus (ATCC 17802, 33844, and 27969). The inoculated samples were then irradiated again at 0, 0.5, 1, 2, and 5 kGy. The D10 values of the cocktail of each L. monocytogenes, S. aureus, and V. parahaemolyticus were 0.85, 0.83, and 0.25 kGy, respectively. No viable cells were detected at 5 kGy of irradiation. Commercial squid Jeotkal was also irradiated without sterilization and showed that irradiation significantly reduced the initial microbial level not only immediately after irradiation but also during storage at 10C for 4 weeks (P < 0.05). The total aer... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3200259 Fri, 22 Jan 2010 00:00:00 +0100 3200259 http://www.medworm.com/index.php?rid=3200258&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00201.x In this study, 168 lactic acid bacteria strains isolated during the fermentation of wakalim were evaluated for their antimicrobial resistance patterns. All of the isolates tested were sensitive to Amp, Pen, Ery, Cep, Aml, and Tet. Among the Lactobacillus isolates, the most frequent resistance was noted for methicillin (96%), followed by resistance to streptomycin (85%), vancomycin (72%), kanamycin (47%), and gentamycin (38%). The most frequent resistance among Pediococcus isolates was observed for vancomycin and streptomycin (96% each), followed by resistance to kanamycin (84%), gentamicin (55%), and methicillin (30%). A total of 13 multiple drug resistance (MDR) patterns were detected. About 42% of the isolates showed MDR to four drugs, 29% to five drugs, and 2% to six drugs. The most fre... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3200258 Fri, 22 Jan 2010 00:00:00 +0100 3200258 http://www.medworm.com/index.php?rid=3200257&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00200.x A total of 413 samples of milk, dairy products, meat and meat products were analyzed for the presence of Staphylococcus aureus in a 2-year survey (2004[ndash]2006). One hundred thirty-eight samples were (33.4%) contaminated with S. aureus. A total of 138 S. aureus strains were isolated and identified. Enterotoksin profiles were determined by Staphylococcal Enterotoxin Test Reversed Passive Latex Agglutination. Their resistance to nine antibiotics were tested. The contamination rate of the meat product samples (48.7%) was significantly higher than milk and dairy products (23.2%). Most of the strains (60.1%) produced staphylococcal enterotoxins. Four strains produced staphylococcal enterotoxin C and staphylococcal enterotoxin D. All of the strains tested were resistant to many of the nine an... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3200257 Fri, 22 Jan 2010 00:00:00 +0100 3200257 http://www.medworm.com/index.php?rid=3200256&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00199.x The inhibitory effect of the extract of pu-erh tea (PETs) against six strains by paper-diffusion methods and the characterization of the mutton treated with different concentrations of the PETs during storage at 7 ± 1C were evaluated in this article. The results showed PETs could significantly inhibit the growth of Listeria monocytogenes, Salmonella typhimurium, Streptococcicosis faecalis, Escherichia coli and Bacillus anthraci, and their minimum inhibitory concentration were 0.07, 0.18, 0.50, 0.42 and 0.48 mg/mL, respectively. PETs showed weak inhibition for S. aureus. The cooled mutton treated with PETs resulted in suppression in the increase of total volatile base nitrogen and thiobarbituric acid reactive substance, inhibition of Enterobacteriaceae and Pseudomonas growth. The cooled mu... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3200256 Fri, 22 Jan 2010 00:00:00 +0100 3200256 http://www.medworm.com/index.php?rid=3200255&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00198.x Food safety in restaurants is an increasing concern among consumers. A primary population segment working in foodservice is receiving food safety information through new media channels such as video social network websites. This research used content analysis to examine the purpose and messages of food safety-related videos posted to YouTube. A usable sample of 76 videos was identified using "food safety" in the YouTube search function. Results indicate that videos must be artfully developed to attract YouTube users while conveying a credible and educational message. Communicators must also monitor new media for competing messages being viewed by target audiences and devise strategies to counter such messages. This one-time snapshot of how food safety was portrayed on YouTube suggests that... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3200255 Fri, 22 Jan 2010 00:00:00 +0100 3200255 http://www.medworm.com/index.php?rid=3200254&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00197.x A total of 380 meat and meat products, dairy and dairy products, fresh vegetables, fresh seafood, and ready-to-eat food samples from supermarkets in Bangkok, Thailand were collected and analyzed for the occurrence of Listeria spp. and of Listeria monocytogenes. The overall incidence of Listeria spp. was 16.8%, most of them were isolated from raw meat and vegetables. L. monocytogenes was isolated from 18 (4.7%) out of 380 studied samples. Other species isolated were L. innocua (6.6%), L. ivanovii (0.8%), L. seeligeri (0.5%), L. grayi (1.6%) and L. welshimeri (2.6%). The antimicrobial susceptibilities of the 64 isolate of Listeria spp. were also examined by the standard disk diffusion method. Listeria spp. were resistant to penicillin (6.3%), chloramphenicol (3.1%) and tetracycline (1.6%), b... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3200254 Fri, 22 Jan 2010 00:00:00 +0100 3200254 http://www.medworm.com/index.php?rid=3200253&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00195.x Twenty-nine chicken products were acquired from different supermarkets in Portugal during September to December 2007 and were analyzed for extended-spectrum [beta]-lactamases (ESBL) Escherichia coli and vancomycin-resistant enterococci (VRE). Cefotaxime-resistant E. coli isolates were recovered in 27 of 29 chicken samples representing 93% of the analyzed samples. The highest percentages of resistance (more than 50% of the isolates) were detected for ampicillin, nalidixic acid and tetracycline. VRE isolates were detected in 17 of 29 samples of chicken origin (59%) and were identified as Enterococcus durans (n = 15) and E. faecium (n = 2) with the highest percentages of resistance being detected for erythromycin, tetracycline, ampicillin and ciprofloxacin. Seven E. durans and the two E. faec... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3200253 Fri, 22 Jan 2010 00:00:00 +0100 3200253 http://www.medworm.com/index.php?rid=3200252&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00194.x The objective of this investigation was to evaluate the efficacy of high hydrostatic pressure and mild heat against spores of Geobacillus stearothermophilus AS 1.1923 in model food systems. The pressure-processing conditions were fixed at 625.0 MPa and 86C for 14 min, which have been determined as the optimum processing conditions considering six-log-cycle reductions of G. stearothermophilus spores. Based on the results, response surface methodology was performed in the present investigation, the effects from food ingredients, such as soybean protein, soybean oil and sucrose, as well as pH of the food matrix on the inactivation of G. stearothermophilus spores by high pressure and mild heat was explored, and a quadratic predictive model for the effects of food ingredients and pH on the redu... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3200252 Fri, 22 Jan 2010 00:00:00 +0100 3200252 http://www.medworm.com/index.php?rid=3200251&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00193.x This study stresses upon the need for regulatory agencies and large-scale meat manufacturers to take into consideration the increased thermal tolerance of acid-adapted pathogens, as healthy growing cultures in a laboratory medium may inaccurately represent their survival in natural food environment. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3200251 Fri, 22 Jan 2010 00:00:00 +0100 3200251 http://www.medworm.com/index.php?rid=3200250&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00192.x This study investigated the presence of potentially human pathogenic strains of Vibrio spp., Aeromonas spp., Escherichia coli, Salmonella spp. and Staphylococcus aureus in fish commercialized in street markets of São Paulo city, Brazil. Twenty fish of different species were analyzed for foodborne pathogens using conventional methods. High levels of fecal contamination were detected in 25% of samples. S. aureus was isolated from 10% of samples. All were negative for Salmonella. Vibrio species, including Vibrio cholerae non-O1/non-O139, were observed in 85% of samples although Vibrio parahaemolyticus was not found in this study. Aeromonas spp., including A. hydrophila, was isolated from 50% of fish samples. The occurrence of these pathogens suggests that the fish commercialized in São Paul... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3200250 Fri, 22 Jan 2010 00:00:00 +0100 3200250 http://www.medworm.com/index.php?rid=3200249&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00191.x Cronobacter sakazakii has been associated most frequently with illness in neonates, so a mathematical model was developed to predict the growth rate of C. sakazakii in infant milk based on temperature. Reconstituted powdered infant milk formulas (RIMFs) inoculated with C. sakazakii were incubated at 10, 20, 30 and 40C. The primary model showed a good fit (r2 = 0.9613[ndash]0.999) to a Gompertz equation to obtain growth rates and lag times (LTs) at each temperature. The specific growth rate (SGR) of C. sakazakii in the RIMF increased, and the LT decreased with increasing temperature. A secondary polynomial model was developed using SAS general linear analysis software. The secondary model was "ln SGR = [minus]0.06581 + (0.00575 × temperature) + (0.00039 × temperature2)." The SGR predicted... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3200249 Fri, 22 Jan 2010 00:00:00 +0100 3200249 http://www.medworm.com/index.php?rid=3089010&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00189.x This study provides a rapid and specific detection method for viable STEC in food. Rapid detection of viable STEC including Escherichia coli O157:H7 cells in food has been difficult, especially when present in low numbers. This study has shown that 7 × 102 to 7 × 103 cfu E. coli O157:H7 in 50 mL of inoculated food samples, i.e., 14[ndash]140 cfu/mL bacterial cells, could be readily concentrated and the bacterial RNA could be detected by real-time reverse transcription polymerase chain reaction (PCR) in a relatively short time. Use of seven primer sets makes this method very specific for real-time PCR detection of E. coli O157:H7. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3089010 Tue, 15 Dec 2009 00:00:00 +0100 3089010 http://www.medworm.com/index.php?rid=3089014&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00185.x The synergistic bactericidal effects of vitamin B1 (thiamine dilauryl sulfate) and the efficacy of commercial sanitizers for minimization of Bacillus cereus contamination in cooked rice were investigated. Sanitizer-treated rice exhibited a greater reduction than water-treated rice, while sanitizer-treated rice with Vitamin B1 produced an even greater reduction. The treatments for B. cereus in rice included (1) 100 ppm hydrogen peroxide with 500 ppm vitamin B1; (2) 200 ppm hydrogen peroxide with 100 ppm vitamin B1; (3) 400 ppm hydrogen peroxide; (4) 50 ppm chlorine with 500 ppm vitamin B1; (5) 60 ppm chlorine with 300 ppm vitamin B1; (6) 70 ppm chlorine with 100 ppm vitamin B1; (7) 80 ppm chlorine; and (8) 100,000 ppm ethanol with 500 vitamin B1. All treatments completely eliminated B. cere... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3089014 Mon, 14 Dec 2009 00:00:00 +0100 3089014 http://www.medworm.com/index.php?rid=3089013&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00186.x The selectivities to pathogenic Klebsiella strains of different isolation media were compared by known standard strains. The modified MacConkey-inositol-carbenicillin (MCIC) medium (Named MCIAC, MacConkey-inositol-adonitol-carbenicillin) supplemented with adonitol gave no false-negative colonies, and exhibited higher selectivity. MCIC and Simmons citrate agar with inositol (SCAI) media gave two false-negative colonies, respectively. These three media all gave two false-positive colonies, respectively. Salmonella Shigella medium gave four false-negative colonies and five false-positive colonies. Violet red bile glucose agar medium gave the most false-positive colonies, although it gave no false-negative colonies. One hundred samples of powdered milk were examined by MCIAC, MCIC and SCAI pla... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3089013 Mon, 14 Dec 2009 00:00:00 +0100 3089013 http://www.medworm.com/index.php?rid=3089012&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00187.x Inactivation of a Yersinia enterocolitica strain by 3.4% ascorbic acid (AA), 0.5% citric acid (CA), 0.2% lactic acid, 100 IU/mL nisin, 2,400 IU/mL lysozyme and 20 mM ethylenediaminetetraacetic acid disodium salt (EDTA ), alone and combined, was studied at different temperatures (4 and 25C) in commercial and laboratory-prepared orange beverages. In laboratory-prepared juice, highest reductions (between 3.06 and 4.07 log units) were obtained with acid mixtures at 25C after 20 min of incubation. At 24 h of incubation, EDTA was bactericidal and the mixtures with nisin or lysozyme resulted in count reductions of 6.03 and 5.98 log units, respectively. In commercial orange beverage, AA and CA gave reductions of 5.43 and 4.26 log units, respectively. The three acid mixtures were bactericidal withi... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3089012 Mon, 14 Dec 2009 00:00:00 +0100 3089012 http://www.medworm.com/index.php?rid=3089011&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00188.x Artisan-made Mexican Botanero cheese in the northwest of the state of Mexico in the central highlands is a soft-paste, fresh product made from raw cow milk. The microbiological quality was determined in cheese from 10 cheese producers. Milk and cheese samples were taken, and the hygienic process was recorded. Milk was analyzed for aerobic mesophil bacteria (AMB) and total coliform bacteria (TC), and in cheese TC and fecal coliforms (FCs) were determined. Results were compared with the Mexican COFOCALEC (milk) and NMX-462 (cheese). All bacterial counts were above those allowed for AMB (100,000 cfu/mL) and TC (1,000 cfu/mL). The norm allows up to 100 cfu/g of TC, but all cheese samples were above the norm. FC should always be negative, but all cheese samples were also positive. Raw milk is b... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=3089011 Mon, 14 Dec 2009 00:00:00 +0100 3089011 http://www.medworm.com/index.php?rid=2865375&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00190.x This study highlighted the possibility of using PSU-LAB71 as a probiotic strain to control infections by pandemic V. parahaemolyticus. Asian countries use many fermented foods containing lactic acid bacteria. This study describes a method to isolate potential probiotic bacteria from fermented foods that have inhibitory properties against pathogenic Vibrio species, especially pandemic strains of Vibrio parahaemolyticus. This report may initiate other countries that face problems caused by this pathogen to isolate their local lactic acid bacteria that have the potential to act as probiotics to control infections. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2865375 Mon, 05 Oct 2009 23:00:00 +0100 2865375 http://www.medworm.com/index.php?rid=2865387&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00173.x In this study, IgY against Clostridium perfringens can be used to replace chemical preservatives in food industries. Because IgY functions well at low temperature, it can be used to inhibit the growth of Clostridia which germinate in refrigerated storage conditions, thus preventing foodborne enterotoxicity caused by such bacteria. In practical applications, natural antimicrobial IgY antibody can be applied to meat products for the improvement of food safety. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2865387 Sun, 04 Oct 2009 23:00:00 +0100 2865387 http://www.medworm.com/index.php?rid=2865386&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00174.x The objective of this study was to assess laboratories' ability to detect or rule out the presence of four common food pathogens: Escherichia coli O157:H7, Salmonella spp., Listeria monocytogenes and Campylobacter spp. To do this, qualitative proficiency test data provided by one proficiency test provider from 1999 to 2007 were examined. The annual and cumulative 9-year percentages of false-negative and false-positive responses were calculated. The cumulative 9-year false-negative rates were 7.8% for E. coli O157:H7, 5.9% for Salmonella spp., 7.2% for L. monocytogenes and 13.6% for Campylobacter spp. Atypical strains and low concentrations of bacteria were more likely to be missed, and the data showed no trend of improving performance over time. Percentages of false-positive results were b... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2865386 Sun, 04 Oct 2009 23:00:00 +0100 2865386 http://www.medworm.com/index.php?rid=2865385&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00175.x Enterobacter sakazakii can cause rare but life-threatening diseases such as meningitis in infants and neonates. Fourier transform infrared (FT-IR) spectroscopy was used to detect and discriminate between eight E. sakazakii strains, two Enterobacter cloacae strains, three Escherichia coli strains and two Klebsiella pneumoniae strains. FT-IR vibrational combination bands reflect subtle compositional differences in the cell membranes of E. sakazakii strains, especially in the region between 1,200 and 900 cm[minus]1which contains absorption bands from carbohydrates. Two multivariate statistical analyses including principal component analysis (PCA) and soft independent modeling of class analogy (SIMCA) were used for data analysis. E. sakazakii strains were clearly distinguishable from the other... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2865385 Sun, 04 Oct 2009 23:00:00 +0100 2865385 http://www.medworm.com/index.php?rid=2865384&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00176.x The aim was to describe the inactivation kinetics of Escherichia coli O157:H7 suspended in apple juice after pulsed electric fields (PEF) and a subsequent storage under refrigeration. Escherichia coli O157:H7 showed a great PEF resistance in apple juice, when survivors were evaluated immediately after PEF. However, PEF-treated cells exhibited a great sensitivity to a subsequent holding in apple juice for 3 days. For instance, although a PEF treatment of 80 pulses at 35.0 kV/cm inactivated less than 0.5 log10 cell cycles, the maintenance of the samples up to 3 days at 4C caused an inactivation of 5.0 log10 cycles. An equation based on the Weibullian-like distribution accurately described the kinetics of cell inactivation. The storage time influences the pulsed electric fields (PEF) inactiva... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2865384 Sun, 04 Oct 2009 23:00:00 +0100 2865384 http://www.medworm.com/index.php?rid=2865383&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00177.x Two Listeria monocytogenes strains stressed with sodium hypochlorite sanitizers for 5 min were inoculated in broth or onto crabmeat and stored at 4, 10 or 25C. Lag time (LT) and specific growth rate (SGR) of unstressed and stressed L. monocytogenes were compared along with those of L. monocytogenes in pathogen modeling program. Compared with L. monocytogenes ATCC 15313, more rapid growth was observed in the stressed L. monocytogenes isolated from pork bulgogi (Korean marinated steak), regardless of the storage temperature. Overall, the effect of stress response on the growth kinetics was more obvious at 4C, where LT of stressed L. monocytogenes with 75 ppm sanitizer was extended up to four times compared with the unstressed sample. Although the overall growth rate of unstressed and stresse... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2865383 Sun, 04 Oct 2009 23:00:00 +0100 2865383 http://www.medworm.com/index.php?rid=2865382&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00178.x This study, as a first report in Turkey, showed the contamination level of beef carcasses, instruments and tools and slaughterhouse environment with BSE-SRM. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2865382 Sun, 04 Oct 2009 23:00:00 +0100 2865382 http://www.medworm.com/index.php?rid=2865381&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00179.x Contamination of poultry by Campylobacter is a significant source of human diarrheal illness. The purpose of this study was to compare standard culture-based methods and real-time polymerase chain reaction (RT-PCR) for detection of Campylobacter jejuni from retail chicken samples. Culture methods were compared with RT-PCR (without enrichment) for detection of C. jejuni in naturally contaminated chicken samples. Purchased chicken samples (n = 43) were collected from four supermarkets. C. jejuni was detected by direct plating to selective agar (DPSA; 5/43, 11.6%), RT-PCR (15/43, 34.9%) and Bolton's enrichment (BE; 8/43, 41.9%). Fifteen chicken samples were concordant by RT-PCR and BE whereas three samples were positive only by BE. The sensitivity of the RT-PCR and DPSA, when compared to BE a... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2865381 Sun, 04 Oct 2009 23:00:00 +0100 2865381 http://www.medworm.com/index.php?rid=2865380&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00180.x In this study the feasibility of using lemon extract to preserve the microbial quality of fresh fruit salad is addressed. In particular, two different packaging strategies were tested: lemon extract directly dissolved into the fruit solution and lemon extract dissolved into a gelatin that was put at the bottom of the salad tray. The microbiological quality decay kinetic of the differently packed cut fruit, stored at 4C, was determined by monitoring spoilage microorganisms for about 20 days. Results show that the active gel in the packaged fruit salad does not seem to affect to a great extent the growth of the investigated microorganisms; on the contrary, the use of the active solution seems to be effective in inhibiting the growth of the natural spoilage microflora, preserving the microbia... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2865380 Sun, 04 Oct 2009 23:00:00 +0100 2865380 http://www.medworm.com/index.php?rid=2865379&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00181.x The chemical constituents of essential oil isolated by hydrodistillation of aerial parts of Origanum saccatum L. growing wild of 39 constituents were identified accounting for 99.11% of the oil of O. saccatum. The oil of O. saccatum contained, as main components, p-cymene (82.8%), [gamma]-terpinene (6.2%), p-cymene-8-ol (1.5%) and carvacrol (1.2%). The essential oil of O. saccatum was characterized by its high content of p-cymene. Preliminary experiment was carried out in vitro using the diffusion method to investigate antimicrobial activity of the O. saccatum oil. The oil exerted varying levels of antimicrobial effects on the growth of all microorganisms (except for 100 ppm which belongs to Bacillus subtilis, Bacillus aureus). The antimicrobial activity of the O. saccatum oil was establis... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2865379 Sun, 04 Oct 2009 23:00:00 +0100 2865379 http://www.medworm.com/index.php?rid=2865378&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00182.x This study represents the first confirmed link between C. estertheticum and the blown pack vacuum-packed beef in Ireland. Blown pack spoilage of vacuum packed meat is a significant problem in the meat industry and has the potential to cause considerable economic loss to meat processors. This study found, the first evidence of Clostridium estertheticum in vacuum packed meat in Ireland. This research will contribute to a better understanding of blown pack spoilage of vacuum packed meat caused by C. estertheticum. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2865378 Sun, 04 Oct 2009 23:00:00 +0100 2865378 http://www.medworm.com/index.php?rid=2865377&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00183.x Biopreservation using lactic acid bacteria (LAB) and/or their metabolites represents an alternative for improving food safety. LAB can synthesize and excrete antimicrobial peptides denominated bacteriocins, but only nisin has been largely commercially used as a food preservative. There are limitations in using this bacteriocin, in part due to its inactivation in meat products. Current research on LAB bacteriocins are conducted aiming to broad their application as natural food preservatives. Lactobacillus sakei 1, is a LAB previously isolated in our laboratory from pork sausage and it is capable to inhibit Listeria monocytogenes, by bacteriocin production. In this work, L. sakei 1 was grown in MRS broth and its bacteriocin was extracted by adsorption on its own cells and purified by cation-... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2865377 Sun, 04 Oct 2009 23:00:00 +0100 2865377 http://www.medworm.com/index.php?rid=2865376&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00184.x The efficacy of using direct high-pressure hot water (60C, 140F) and a quaternary ammonium compound to clean the inside of stainless steel pipe used to transport chicken giblets was evaluated. The giblets were collected from a commercial processing plant and were inoculated with Campylobacter jejuni. The cleaning system was effective in reducing the numbers of inoculated C. jejuni and naturally occurring mesotrophic bacteria (aerobic plate counts) on the inside surface of the stainless steel pipe used to transport the giblets. However, the decreases in naturally occurring Escherichia coli and coliforms were not significant. These results suggest that additional improvements are needed to better disinfect the piping system used to transport giblets to reduce the potential for cross-contamin... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2865376 Sun, 04 Oct 2009 23:00:00 +0100 2865376 http://www.medworm.com/index.php?rid=2552751&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00163.x Twenty-three strains of lactic acid enterococci isolated from dromedary raw milks in Southern Algeria were investigated for their proteolytic activity and ability to produce biogenic amines by decarboxylating amino acids: histidine, tyrosine and ornithine. All strains tested displayed proteolytic activities, but none of them were able to produce detectable biogenic amines in the usual adequate laboratory media, namely, Joosten and Northolt medium and Leuschner medium. Polymerase chain reaction experiments indicate a positive correlation between the absence of the hdc and odc genes and the lack of histamine and putrescine production for all tested strains. By contrast, all strains appeared to possess tdc gene, but no correlation was found with a negative expression of tyrosine decarboxylase... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2552751 Sun, 28 Jun 2009 23:00:00 +0100 2552751 http://www.medworm.com/index.php?rid=2552750&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00166.x A total of 44 food handlers who work in elementary schools from Governador Valadares, Minas Gerais, Brazil, were subjected to the examination of the nasal carriers of Staphylococcus aureus and of hand carriers of Enterobacteriaceae and Pseudomonas aeruginosa. A simple method using the eosine-methilene-blue media to isolate enterobacteria from the hands was performed. Among the total number of food handlers, 29.5% were S. aureus nasal carriers. The following percentages were obtained for enterobacteria isolation from the hand carriers: Enterobacter spp. (54.5%), Serratia spp. (9.0%), Shigella spp. (9.0%), E. coli (6.8%), Salmonella spp. (2.3%) and Yersinia spp. (2.3%). Pseudomonas aeruginosa was isolated from the hands of 2.3% food handlers. Our results demonstrated the necessity of perform... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2552750 Sun, 28 Jun 2009 23:00:00 +0100 2552750 http://www.medworm.com/index.php?rid=2552749&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00167.x One hundred thirty-eight dietary supplement samples comprised of alfalfa, Circu-Care, coriander, cumin, echinacea, garlic, ginger, ginkgo, horse chestnut extract, juniper berries, licorice, psyllium, saw palmetto, St. John's wort, valerian, white willow bark, and various vitamins and minerals were obtained from local supermarkets and dietary supplement companies and analyzed for fungal contamination and the presence of aerobic mesophilic bacteria. Results indicated that the highest mold and yeast counts of 5.6 × 106 colony forming units (cfu) per gram product were found in alfalfa and the lowest (1.0 × 102 cfu/g) were present in ginger supplements. Potentially toxigenic molds were found in alfalfa, coriander, echinacea, garlic, ginkgo, juniper, licorice, psyllium and St. John's wort supp... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2552749 Sun, 28 Jun 2009 23:00:00 +0100 2552749 http://www.medworm.com/index.php?rid=2552748&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00168.x This study may help to sterilize the stored seed with consideration of nutritional value. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2552748 Sun, 28 Jun 2009 23:00:00 +0100 2552748 http://www.medworm.com/index.php?rid=2552747&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00169.x The growth of Brochothrix thermosphacta affect by temperatures (0, 2, 5, 7 and 10C) were studied in laboratory medium. Growth curves were fitted using logistic, Gompertz and Baranyi models. Statistical characteristics like r2, mean square error, bias factor and accuracy factor were using for comparison of these models. Based on the criteria, the Gompertz described the data best, Baranyi performed the predicting best. The maximum growth rates obtained from primary model were then modeled as a function of temperature using the square root model. Statistically for the secondary model, the bias and accuracy factors are 0.9978, 0.9943 and 0.9712, and 1.0513, 1.0639 and 1.2225 for logistic, Gompertz and Baranyi, respectively, which may indicate that Baranyi model fitted and performed best of the... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2552747 Sun, 28 Jun 2009 23:00:00 +0100 2552747 http://www.medworm.com/index.php?rid=2552746&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00170.x The effects of growth temperature in the range of 20[ndash]45C on the heat resistance of Listeria innocua (CECT 910) at different heating temperatures (56, 59, 62 and 65C) were investigated. D values were lower for cells grown at 20C and significantly increased with increasing growth temperature up to 45C, showing D values about five times higher. The inactivation rate of L. innocua at the heating temperatures tested decreased exponentially with growth temperature. The z values were not significantly modified by growth temperature, obtaining a mean value of 5.65 ± 0.19C. The decimal reduction times at different heating temperatures for L. innocua cells grown at different temperatures were succesfully described using a mathematical equation. The prediction of the effectiveness of thermal p... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2552746 Sun, 28 Jun 2009 23:00:00 +0100 2552746 http://www.medworm.com/index.php?rid=2552745&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00171.x Acid resistance of Escherichia coli O157:H7 strain UT 10 and Escherichia coli ATCC 25922 was determined in brain heart infusion broth at pH 7.4, 4.5 and 2.5. Variations due to acid stress in the counts of both strains were also determined. Acid adaptation enhanced the survival of both strains at pH 4.5, but neither strain could survive after 4 h at pH 2.5. At optimum growth conditions (pH 7.4), E. coli ATCC 25922 exhibited increased viability over E. coli UT 10. At pH 4.5, E. coli UT 10 was more tolerant to low pH than E. coli ATCC 25922. An increase in saturated fatty acids of both AA strains was observed, indicating the importance of lipid modification in enhancing survival at low pH. The results of this study indicated that the food industry should therefore adapt their processing/prese... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2552745 Sun, 28 Jun 2009 23:00:00 +0100 2552745 http://www.medworm.com/index.php?rid=2552744&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00172.x The antibacterial and antioxidant potentials of methanolic extracts of Ailanthus altissima Swingle leaves were evaluated. Antibacterial activity was tested in vitro by agar disk diffusion method against 11 (six gram-positive and five gram-negative) foodborne bacteria. The methanol extract and its different polar subfractions inhibited significantly the growth of all six gram-positive bacteria: Listeria monocytogenes (ATCC 19116, ATCC 19118 and ATCC 19166), Staphylococcus aureus (ATCC 6538 and KCTC 1916) and Bacillus subtilis ATCC 6633 and two gram-negative bacteria: Pseudomonas aeruginosa KCTC 2004 and Escherichia coli ATCC 8739. The zones of inhibition of methanol extract and its derived different polar subfractions against the tested bacteria were found in the 12.1[ndash]23.2 mm range an... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2552744 Sun, 28 Jun 2009 23:00:00 +0100 2552744 http://www.medworm.com/index.php?rid=2507056&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00165.x Salmonella enterica isolates recovered from stool samples of healthy food handlers in two hospital dining halls in Beijing, China were characterized by serotyping, susceptibility to 15 antimicrobials and pulsed field gel electrophoresis (PFGE). Our data showed that 9.5% (29/305) of food handlers in these two dining halls were Salmonella carriers. Twenty-nine isolates were grouped into five serotypes including Agona, Derby, Enteritidis, Infantis and Senftenberg. All six Enteritidis isolates were resistant to chloramphenicol, nalidixic acid and tetracycline. Identical PFGE patterns were identified from food handlers in the same dining hall that indicated the possible transmission of Salmonella among food handlers and to customers. Our findings underscore the importance of food hygiene educat... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2507056 Wed, 24 Jun 2009 23:00:00 +0100 2507056 http://www.medworm.com/index.php?rid=2507060&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00160.x The effect of bacteriocin producing Lactobacillus sakei 4413 (an isolate from a Greek dry-fermented sausage) on inhibition of co-cultured verocytotoxigenic Escherichia coli or Listeria monocytogenes strains was investigated. In the simulated meat fermentation medium (containing a mixture of nitrogen sources, glucose, sodium chloride and curing agents, with initial pH 6.5) incubated at 25C, L. sakei 4413 produced the highest concentration of bacteriocin in the exponential growth phase, reducing the pH of the medium to 4.3 and producing 0.54% w/v lactic acid. Three primary models (i.e., the Gompertz model, the Baranyi model and the Whiting-Buchanan model) were evaluated for modeling survival curves of different verocytotoxigenic E. coli and L. monocytogenes strains co-cultured with L. sakei ... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2507060 Sun, 21 Jun 2009 23:00:00 +0100 2507060 http://www.medworm.com/index.php?rid=2507059&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00161.x This study presents a quick and effective identification method to simultaneous monitor four foodborne pathogens in food samples. The specificity and sensitivity of this method can be used to unambiguously identify these four foodborne pathogens in practical food samples based on the species-specific genes. Therefore, this detection method is applicable for surveillance measures of these four foodborne pathogens in the food production chain. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2507059 Sun, 21 Jun 2009 23:00:00 +0100 2507059 http://www.medworm.com/index.php?rid=2507058&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00162.x In conclusion, various sources of information should be used to increase consumer awareness on food safety. In the present study, situational analysis was conducted to obtain data on food safety knowledge and attitude of consumers. Results indicated that although some of the consumers could identify the carriers for foodborne diseases, such as cholera, food poisoning and jaundice, most of them did not know about the carriers of typhoid, gastroenteritis and amebiosis. Thus, efforts should be made to educate consumers about the relation between food and diseases and the importance of making proper food choices for consumption. Most consumers had a positive attitude toward food safety and believed government intervention would help in improving the quality of street foods. Such data can form ... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2507058 Sun, 21 Jun 2009 23:00:00 +0100 2507058 http://www.medworm.com/index.php?rid=2507057&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00164.x This article aimed to formulate a local food safety crisis management plan which consists of preventive phase, emergency phase and reconstruction phase based on the revised crisis preparedness model. It was suggested that a cross-boundary liaison with health authorities overseas, a close inter- and intradepartmental cooperation in the government, a balance between economic and political issues, considerations on public culture, and an introduction of education for food safety and morality should be the determinants of success in the plan. Crisis preparedness on food safety seems to be the indispensable proactive measure to safeguard the public health by the local food authorities. This article aimed to discuss the formulation of a local crisis management plan on contingent food safety prob... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2507057 Sun, 21 Jun 2009 23:00:00 +0100 2507057 http://www.medworm.com/index.php?rid=2353369&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00148.x As a prelude to developing food safety educational modules for Nevada adult/elderly caregiver facilities, we assessed the extent of such behavior through questionnaires, i.e., we assessed the behavior, attitudes and food safety practices of supervisors in adult/elderly care facilities. Our questionnaire was based on a validated consumer food behavior questionnaire, modified to better assess the needs of the target audience. The questionnaire was tested and revised before being distributed to the targeted group. Mailing lists were obtained from a variety of state, local and personal resources. Data were collected from 390 adult/elderly licensed caregiver facilities located throughout urban and rural areas of Nevada. Findings showed that although caregivers have a basic understanding of food... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2353369 Wed, 22 Apr 2009 02:42:38 +0100 2353369 http://www.medworm.com/index.php?rid=2353380&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00159.x The mold flora of 50 dried fig samples consumed in Turkey was examined and the aflatoxigenic ones were determined. Among 127 fungi isolated, 74 were Aspergillus, 24 were Trichoderma, 16 were Fusarium and 13 were Acremonium. Of the isolates, 17 were aflatoxigenic and four of them were capable to produce aflatoxin, three of which were characterized as A. flavus and one as A. parasiticus. Aflatoxin production of four strains was confirmed by high pressure liquid chromotography. The effect of UV irradiation on mold count and aflatoxin quantity was also tested. It was found that UV irradiation led to a decrease in the mold count and aflatoxin quantity. Studies have shown that the concentration of aflatoxins may exceed the determined limits in dried figs. Its presence can be a potential threat t... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2353380 Mon, 20 Apr 2009 04:00:00 +0100 2353380 http://www.medworm.com/index.php?rid=2353379&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00158.x Acid and thermal resistances of a Salmonella enteritidis strain involved in several foodborne outbreaks in southern Brazil were compared with other two Salmonella serovars. Strains were cultivated in Nutrient Broth supplemented with 1% glucose for acid adaptation, and then cells were exposed to different pH and temperatures. Survivors were enumerated and cellular proteins were analyzed by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). S. enteritidis presented better acid adaptation than S. typhimurium and S. bredeney after exposure to pH 3.5 and 4.0, but all serovars demonstrated a similar behavior at pH 4.5. At 52C, nonadapted and acid-adapted S. bredeney presented enhanced survivor rates when compared to the other serovars, although acid adaptation protected S. ent... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2353379 Mon, 20 Apr 2009 04:00:00 +0100 2353379 http://www.medworm.com/index.php?rid=2353378&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00157.x This study shows that E. sakazakii strains differ widely in their heat resistance. No differences were observed between biofilm formers and nonformers in terms of heat-resistance in thermal inactivation kinetics experiments. Conventional high temperature short-time pasteurization processes are considered sufficient to inactivate all E. sakazakii strains, and a household microwave oven (40[ndash]50 s for 60-mL portions) can be used to inactivate E. sakazakii if present in reconstituted infant formula milk (IFM). Growth of E. sakazakii can be inhibited in powdered and reconstituted IFM by refrigeration. Also, it is recommended that reconstituted IFM be discarded or refrigerated if not immediately consumed. The probiotic L. acidophilus ATCC 4356 was not effective in inhibiting E. sakazakii in... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2353378 Mon, 20 Apr 2009 04:00:00 +0100 2353378 http://www.medworm.com/index.php?rid=2353377&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00156.x The ability of commercial fresh fish to be processed to produce fresh-fish based hamburger was assessed in this work. In particular, four commercially important fish species, i.e., hake (Merluccius merluccius), mackerel (Scomber scombrus), sea bass (Dicentrarchus labrax) and sea bream (Sparus aurata) were packed in an aluminium/plastic laminated film, stored at 4C, and studied for changes in trimethylamine (TMA) and biogenic amines such as histamine, cadaverine, putrescine and spermidine. In terms of TMA content, results suggest that sea bass and sea bream resulted into species suitable to be fresh processed having a TMA acceptability limit of 5.5 and 10 days, respectively, whereas in the same conditions, hake and mackerel resulted highly perishable products with a TMA acceptability limit ... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2353377 Mon, 20 Apr 2009 04:00:00 +0100 2353377 http://www.medworm.com/index.php?rid=2353376&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00155.x This article is an initial study from our group concerning the antagonistic activity of the autochthonous microbiota from raw milk. This activity can explain the low frequency of some pathogens in this food, and these findings were the basis for our current studies concerning the characterization of this activity. For the period of 2006[ndash]2008, our group received funds from the National Council for Scientific and Technological Development, Brazil, and the Foundation of Scientific Support from Minas Gerais state, Brazil, for this complete study, aiming to describe the antagonistic microorganisms (phenotypic and genotypic), their antimicrobial productions (identification, characterization and potential) and purification. This article has the importance of supporting similar studies conce... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2353376 Mon, 20 Apr 2009 04:00:00 +0100 2353376 http://www.medworm.com/index.php?rid=2353375&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00154.x This study was carried out to evaluate the growth and survival of Listeria monocytogenes during manufacture and ripening of Carra cheese. For this purpose, Carra cheese was produced with raw cow's milk inoculated to contain 2.97 log cfu/mL of L. monocytogenes (serovar 4b). Cheese was ripened through storing in an earthenware jug underground for 90 days. Enumeration of L. monocytogenes was made by surface-plating on Oxford agar. The number of L. monocytogenes increased during manufacture and reached 4.89 log cfu/g at the first day of ripening, while it decreased to 4.19 log cfu/g during the first 15 days of ripening and remained constant throughout the rest of the ripening period. The results indicated that L. monocytogenes in Carra cheese manufactured with raw milk was able to survive for ... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2353375 Mon, 20 Apr 2009 04:00:00 +0100 2353375 http://www.medworm.com/index.php?rid=2353374&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00153.x The effectiveness of malic acid in combination with physicochemical quality stabilizing compounds to inactivate Listeria monocytogenes, Salmonella Enteritidis and Escherichia coli O157:H7 inoculated in fresh-cut "Fuji" apples packaged in air and stored at 5C was evaluated. Apple pieces were immersed for 1 min in solutions containing 1% w/v N-acetyl-L-cysteine, 1% w/v glutathione and 1% w/v calcium lactate with and without 2.5% w/v D-L malic acid to control apple browning, softening and reduce the populations of pathogenic microorganisms. Fresh-cut apples dipped in each solution were then inoculated with L. monocytogenes, S. Enteritidis or E. coli O157:H7. The use of malic acid in combination with physicochemical quality stabilizing compounds caused more than 5 log10 cfu/g of L. monocytogen... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2353374 Mon, 20 Apr 2009 04:00:00 +0100 2353374 http://www.medworm.com/index.php?rid=2353373&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00152.x This study compared 15 published inoculation procedures as they impact the percent moisture of alfalfa seeds. The percent moisture after drying was similar for the 15 procedures, verifying that the inoculation method had no effect. Using white and ultraviolet (UV) fluorescent light at 360 nm, the physical characteristics of different alfalfa varieties' seed coats were examined. Exposed cotyledon fluoresced under the UV light, making viewing of wrinkled, broken and cracked seed coats easier. The effects of wetting and drying on broken or cracked seed coats were photographed. During inoculation, cracks or breaks in the seed coats became more pronounced and curled away from the cotyledon; thus, bacteria cells in the inocula became trapped in the cracks or under the seed coat. Upon drying, the... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2353373 Mon, 20 Apr 2009 04:00:00 +0100 2353373 http://www.medworm.com/index.php?rid=2353372&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00151.x The Weibull model, which is commonly used for thermal inactivation of microorganisms in literature, was used to describe microbial inactivation by high-pressure carbon dioxide (HPCD). The number of parameters of the model was reduced from two to one in order to avoid interrelationship of these parameters with a slight loss of goodness-of-fit. A second-order polynomial function fulfilling a number of constraints was proposed for the secondary modeling of the time-constant parameter of the reduced Weibull model. This function consists of both pressure and temperature and therefore can be used for HPCD treatments. The application of any new technology in food preservation requires a reliable model that accurately describes and predicts the inactivation data of microorganisms. In principle, th... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2353372 Mon, 20 Apr 2009 04:00:00 +0100 2353372 http://www.medworm.com/index.php?rid=2353371&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00150.x A mini-Tn5 promoter probe carrying the intact lux operon of Photorhabdus luminescens (pUT mini-Tn5 luxCDABE) which allowed measurement of light output without the addition of exogenous substrate was constructed. It was used to create a pool of chromosomally lux-marked strains of Morganella morganii. Also plasmid-mediated expression of bioluminescence in M. morganii was assessed using plasmid pT7-3 luxCDABE. No significant differences in growth and histamine formation characteristics of the lux-marked strains and wild type M. morganii strain were observed. Luminescent strain of M. morganii was used in experiments in which the correlation between light output, viable cell count and histamine formation was assessed. During the exponential growth phase, a positive linear correlation was observ... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2353371 Mon, 20 Apr 2009 04:00:00 +0100 2353371 http://www.medworm.com/index.php?rid=2353370&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2009.00149.x The antibacterial potential of essential oil and methanolic extracts of Erigeron ramosus (Walt.) B.S.P. was evaluated. Thirty-one components representing 95.3% of the total oil were identified, of which [beta]-caryophyllene (24.0%), [alpha]-humulene (14.5%), 1,8-cineole (9.0%), eugenol (7.2%), globulol (7.1%), caryophyllene oxide (5.2%), [delta]-cadinene (5.0%), [alpha]-copaene (4.9%) and widdrol (2.0%) were the major components. The antibacterial activity of essential oil and methanolic extracts of E. ramosus was determined in vitro using the agar diffusion method and minimum inhibitory concentration determination test against 14 (seven gram-positive and seven gram-negative) foodborne bacteria. The essential oil (5 µL/mL, corresponding to 1,000 ppm/disc), methanol extract and its differe... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2353370 Mon, 20 Apr 2009 04:00:00 +0100 2353370 http://www.medworm.com/index.php?rid=2127552&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00144.x In this study, Dunaliella salina, a unicellular green algae, was used as the test organism to perform the investigation. These tests were preferred because they are simple, cost-effective and efficient, and D. salina is easily cultured. The methods established in this study are practicable and will provide further studies with useful reference information. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2127552 Sat, 24 Jan 2009 04:56:54 +0100 2127552 http://www.medworm.com/index.php?rid=2127564&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00124.x Essential oils (EOs) and extracts (methanol, acetone and diethyl ether) of fresh and dried oregano (Origanum onites L.) were used to determine the antifungal effect on Alternaria alternata, Aspergillus flavus (two strains), Aspergillus niger (two strains), Aspergillus parasiticus, Fusarium semitectum, Fusarium oxysporum, Mucor racemosus and Penicillium roqueforti by disk diffusion methods. Minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) of all samples were determined. The antifungal activity of the fresh herb was greater than that of the dried herb. MIC values for fresh and dried methanol extracts were 150[ndash]950 µg/mL and 750[ndash]950 µg/mL, respectively. MFC values for methanol extracts were determined between 300 and 1200 µg/mL for fresh oregano ... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2127564 Thu, 22 Jan 2009 05:00:00 +0100 2127564 http://www.medworm.com/index.php?rid=2127563&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00147.x Campylobacter jejuni is one of the leading causes of bacterial gastroenteritis, but little is known concerning how this fastidious bacterium survives stressful conditions. C. jejuni strains were exposed to acid conditions (pH = 4.5), acid conditions and aerobic atmosphere, or starvation stress, allowed to recover, and again challenged with acid stress. The counts of acid-adapted, acid- and aerobic-adapted, and starvation-adapted cells that survived further acid stress were higher than those of nonstressed cells in some strains, but adaptation and survival was time dependent. Expression of the virulence gene cadF was up-regulated by starvation stress while cdtB and ciaB were down-regulated. The proteomic study revealed that six proteins were synthesized due to starvation stress and eight pr... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2127563 Thu, 22 Jan 2009 05:00:00 +0100 2127563 http://www.medworm.com/index.php?rid=2127562&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00146.x Occurrence of Vibrio parahaemolyticus was examined in 293 samples of finfish and Penaeus monodon from wholesale fish markets in Kolkata, India, by standard culture technique. The bacterium was isolated from 45.83% of shellfish and 16.73% of finfish samples. Among finfishes, about 30% of Chela laubuca and Otolithoides biauritus, and 18[ndash]21% of Lates calcarifer, Ompok bimaculatus and Herpadon nehereus samples were contaminated. The bacterium was mostly recovered from intestinal contents (32.25%) as compared to skin (11.95%) and gill tissue (16.43%). Seasonal variation in occurrence of the bacterium was also recorded. The occurrence was slightly more in seafishes (21.74%) as compared to estuarine (16.04%) and freshwater fishes (13.83%), and in demersal fish species (19.35%) posing health... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2127562 Thu, 22 Jan 2009 05:00:00 +0100 2127562 http://www.medworm.com/index.php?rid=2127561&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00141.x The effects of the addition of sodium and potassium chlorides and phosphate (sodium phosphate di-basic/potassium phosphate monobasic) up to 0.25 mol/L in the sporulation medium on the percentages of sporulation and heat resistance of Bacillus cereus (ATCC 7004, 4342, 9818) were investigated. In all cases the sporulation rates varied between 85[ndash]95%, except for the ATCC 4342 strain when sodium and potassium chlorides were added at the highest level obtaining a 40 and 70% sporulation, respectively. Neither NaCl nor KCl had any significant effect on the heat resistance of the spores produced, obtaining D100 values of 0.04 ± 0.01, 0.31 ± 0.03 and 7.5 ± 0.4 min for strains 7004, 4342 and 9818, respectively. In all cases, as phosphate concentrations increased, decimal reduction times obt... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2127561 Thu, 22 Jan 2009 05:00:00 +0100 2127561 http://www.medworm.com/index.php?rid=2127560&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00143.x This article reports the data of the first survey on the presence of aflatoxins in nuts sampled in three distinct regions of Turkey. The formation of aflatoxins depends not only on the genetic potential of mold strains but also on environmental factors, especially during post-harvest transportation and storage. Although further national surveys must be performed on a regular base, the results of the present study indicate a reduced level of aflatoxin contamination of nut-based products compared to earlier observations. The results conclude that implementation of stricter quality control measures, technical assistance to private sector actors and regulatory initiatives to support employment of these strategies undertaken in recent years by the National Authorities have paid back. (Source: J... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2127560 Thu, 22 Jan 2009 05:00:00 +0100 2127560 http://www.medworm.com/index.php?rid=2127559&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00142.x In this study, a loop-mediated isothermal amplification (LAMP) method has been developed for the detection of E. sakazakii in infant formula. The assay detected the species-specific DNA sequence of the 16S-23S rRNA internal transcribed spacer. The sensitivity of the detection is 1.2 cfu per 100 g infant formula with the selective enrichment. As the amplification is made under isothermal conditions, only a water bath or heating block is needed to maintain the required temperature. Thus, the method will be easily generalized and popularized in the future. Enterobacter sakazakii is an emerging opportunistic pathogen associated with meningitis, bacteria and necrotizing enterocolitis in neonates. Powdered infant formulae have been implicated as the source of infection in neonatal meningitis. Th... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2127559 Thu, 22 Jan 2009 05:00:00 +0100 2127559 http://www.medworm.com/index.php?rid=2127558&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00140.x In this study, there was no correlation in invasion abilities and cytotoxicity. The results indicated C. jejuni may utilize more than one mechanism in causing disease and pathogenicity but is strain dependent. Also, the utility of the cdtB as an indicator of pathogenicity is doubtful. Campylobacter jejuni is a leading cause of foodborne illness in the U.S.A. and creates a 1.2 billion dollar annual burden. Being able to detect and distinguish pathogenic from nonpathogenic strains is important for assessing the risk to consumers of contracting campylobacteriosis. Understanding which pathogenicity factors are important in causing disease can give information to develop targets for detecting pathogenic bacteria, intervention strategies and therapeutic medicines. This work points out that the a... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2127558 Thu, 22 Jan 2009 05:00:00 +0100 2127558 http://www.medworm.com/index.php?rid=2127557&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00139.x An immunomagnetic separation (IMS) technique and a PCR assay were developed for use in detection of Salmonella Typhimurium in meat samples. To prevent false-negative results, an internal amplification control was developed. The polymerase chain reaction (PCR) using primers specific for an omp gene sequence of Salmonella spp has shown 100% sensitivity and specificity and a detection limit of 104 cfu/mL. The IMS-PCR methods using PCR immediately after IMS and using 6 h postenrichment in brain heart infusion between IMS and PCR resulted in detection limits of 103 cfu/mL and 1[ndash]10 cfu/mL, respectively. The lowest level of S. Typhimurium that could be detected by the IMS-PCR method in the presence of natural microbiota from inoculated meat samples was 1[ndash]10 cfu/25 g. When samples were... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2127557 Thu, 22 Jan 2009 05:00:00 +0100 2127557 http://www.medworm.com/index.php?rid=2127556&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00138.x Many regulatory, safety and health policies are adopted to reduce harm to potential victims from accidents and other harmful events. Attenuation and, sometimes, even reversal of the direct policy effect on expected harm may occur because of offsetting behavior (OB) by potential victims, as they reduce care in response to the policy. This research determines that OB in consumers may be responsible for an increase in food poisoning cases after new, more stringent food safety policies are enacted and implemented in the food processing sector. This behavioral anomaly indicates serious deviation from rational choice and possibly helps explain the growing gap between the decrease in pathogen bacteria level recorded in meat processing plants and the increasing number of outbreaks of food poisonin... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2127556 Thu, 22 Jan 2009 05:00:00 +0100 2127556 http://www.medworm.com/index.php?rid=2127555&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00137.x The effect of "double-dipping" crackers/chips on the transfer of bacteria from the mouth to the dipping solution was determined in three separate experiments. In experiment 1, eight subjects dipped crackers either three or six times into sterilized water either without biting or biting before each dip. The dipping solutions had higher (P [le] 0.05) bacterial populations when crackers were bitten before dipping compared with when no double-dipping occurred. The second experiment utilized sterile water dipping solutions with pHs of 4, 5 and 6, and tested the solutions at 0 and 2 h after dipping. There was again significant (P [le] 0.05) bacterial transfer due to biting then dipping; however, the pH 4 dipping solution had initially lower bacterial populations than the higher pH solutions and ... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2127555 Thu, 22 Jan 2009 05:00:00 +0100 2127555 http://www.medworm.com/index.php?rid=2127554&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00136.x Four different host-specific lactococcal bacteriophages were subjected to high hydrostatic pressure and heat treatments. Pressure treatments were done at room temperature at 300 and 350 MPa for 5[ndash]40 min. Complete inactivation of bacteriophages was observed starting at 350 MPa for 20-min treatment at room temperature. The effect of heat on the bacteriophages was analyzed by heat treatment at 71.7C for predetermined lengths of time (1[ndash]5 min). Decrease in bacteriophage number was observed after 3 min of heat treatment at 71.7C. Pressure treatment at 350 MPa/5 min and heat treatment at 71.7C/3 min were both found to be effective for the inactivation of lactococcal bacteriophages. Sodium dodecyl sulphate-polyacrylamide gel electrophoresis analysis indicated that protein profiles of ... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2127554 Thu, 22 Jan 2009 05:00:00 +0100 2127554 http://www.medworm.com/index.php?rid=2127553&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00145.x This study, therefore, was mainly initiated to evaluate the possibility of extending the shelf life of packed fresh meat patties by a combination of thymol (THY) to other extrinsic factors such as storage temperatures and modified atmosphere during packaging. Interesting results were obtained suggesting that THY can perform an efficient synergy with modified atmosphere conditions and could be advantageously utilized by the meat industry. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=2127553 Thu, 22 Jan 2009 05:00:00 +0100 2127553 http://www.medworm.com/index.php?rid=1899187&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00125.x This study investigated the number of B. cereus cells in dairy and cereal products in Thailand, using the plate count method and the presence of diarrheal-enterotoxin genes in the isolates through the polymerase chain reaction (PCR). The genes encoding hemolysin BL (hblA, hblC, hblD), nonhemolytic enterotoxin (nheA, nheB, nheC), cytotoxin K (cytK) and enterotoxin FM (entFM) were the targets of the PCR. B. cereus was found in all pasteurized milk samples and in 37.7% of the cereal product samples, ranging from 50 to 1.7 × 103 cfu/g. PCR results revealed that each gene occurred in more than half of the foodborne isolates tested. A large proportion (96%) of the isolates harbored enterotoxin genes and is considered to be potentially diarrhegenic. Significant frequency of Bacillus cereus conta... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1899187 Fri, 24 Oct 2008 08:23:14 +0100 1899187 http://www.medworm.com/index.php?rid=1899197&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00135.x This study was designed to detect H. pylori from raw or ready-to-eat foods to provide more evidence for oral-oral and fecal-oral transmission patterns. For this purpose, a total of 11 fresh raw chickens from a local grocery and 18 orders of ready-to-eat raw tuna meat from a restaurant were collected. H. pylori were detected with our new multiplex polymerase chain reaction (PCR) assay, which can amplify 10 DNA fragments from five gene loci at the same time. H. pylori were positive in 36% (4/11) of the raw chickens and 44% (8/18) of the ready-to-eat raw tuna meat tested using the new multiplex PCR assay. Our results demonstrate that food might be a vehicle for H. pylori transmission among humans. The prevalence of Helicobacter pylori infection may be as high as 80% in developing countries an... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1899197 Wed, 22 Oct 2008 04:00:00 +0100 1899197 http://www.medworm.com/index.php?rid=1899196&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00134.x This study suggests that aromatic materials can be used to preserve milk in areas where milk quality is low or sanitary conditions are insufficient. Experimental results of food preservation sheets suggest that such technique can be applied for package of dairy foods, too. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1899196 Wed, 22 Oct 2008 04:00:00 +0100 1899196 http://www.medworm.com/index.php?rid=1899195&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00133.x This study evaluated whether inoculated (none, 1, 5 log colony-forming units [cfu]/cm2) Escherichia coli O157:H7 would result in detection of autoinducer (AI)-2-like activity on beef. Inoculated fresh beef, containing low (LNB) or high (HNB) initial levels of natural flora, was analyzed for bacterial populations and AI-2-like activity during aerobic or vacuum-packaged storage (4, 10, 25C). As expected, no growth of E. coli O157:H7 was detected at 4C, while at 10C, growth was detected only on LNB samples stored aerobically; AI-2-like activity was minimal (P [ge] 0.05) at both temperatures. E. coli O157:H7 showed more growth in LNB than HNB, and in aerobically than vacuum-packaged samples inoculated with 1 log cfu/cm2 of the pathogen during storage at 25C. AI-2-like activity was generally hi... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1899195 Wed, 22 Oct 2008 04:00:00 +0100 1899195 http://www.medworm.com/index.php?rid=1899194&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00132.x In this study, the antimicrobial properties and main components of insect oil (Aspongopus viduatus) were identified. The oil has traditional medicinal uses in human and animal skin diseases and is also used for meat dressing before drying in western regions of Sudan. The oil has long stability against rancidity because of its high oleic acid content. This oil in its crude form or phenolic compounds-free form could be used in meat and meat products preservation processes to control gram-positive bacteria. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1899194 Wed, 22 Oct 2008 04:00:00 +0100 1899194 http://www.medworm.com/index.php?rid=1899193&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00131.x Many complex processes are involved in food deterioration, and despite modern techniques of preservation, excessive amounts of foods are still lost, mainly through the action of microorganisms. The growing preference for natural foods has led to a tendency to diminish the use of chemical additives and for the food industry to search for alternative antimicrobial agents within natural systems. The aim of this work was to determine the effectiveness of the essential oils (EOs) of lemon (Citrus lemon L.), mandarin (C. reticulata L.), grapefruit (C. paradisi L.) and orange (C. sinensis L.) to inhibit the growth of some bacteria commonly used in the food industry, (Lactobacillus curvatus, L. sakei, Staphylococcus carnosus and S. xylosus) or related to food spoilage (Enterobacter gergoviae and E... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1899193 Wed, 22 Oct 2008 04:00:00 +0100 1899193 http://www.medworm.com/index.php?rid=1899192&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00130.x A 5-month (2005) study was conducted in Argentina to determine the effect of food-grade antioxidants (butylated hydroxyanisole [BHA], butylated hydroxytoluene [BHT] and propyl paraben [PP]) alone and in mixtures on fungal spoilage from stored peanuts. Five experimental containers were filled with 200 kg of bulk peanuts. Four of them were treated with BHA (10 mM), BHA-PP mixture (10 + 10 mM) and BHA-PP-BHT mixtures (10 + 5 + 10 mM) and (10 + 10 + 10 mM). Fungal counts from peanuts treated with binary and ternary mixtures were often significantly reduced. A total of 10,997 fungal isolates were identified from the control pod and seed tissues in the six samplings done compared to 5,164, 1,469, 1,217 and 1,228 fungi isolated from silos 2, 3, 4 and 5, respectively. Ninety-eight percent of all f... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1899192 Wed, 22 Oct 2008 04:00:00 +0100 1899192 http://www.medworm.com/index.php?rid=1899191&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00129.x In this study, we discovered antimicrobial properties of a cinnamon extract and identified the principal antimicrobial compound as cinnamic aldehyde. For the first time, we demonstrated that this generally recognized as safe (GRAS) compound could be used with a commercial post-cut dipping solution (FreshExtend) to inhibit significantly the microbial growth on refrigerated apple slices. Therefore, this innovative study provides a new insight into the possible use of cinnamon extracts or cinnamic aldehyde as natural antimicrobial agents in the processing of sliced apples and other minimally processed fruits and vegetables to assure the microbial food safety. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1899191 Wed, 22 Oct 2008 04:00:00 +0100 1899191 http://www.medworm.com/index.php?rid=1899190&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00128.x This study gives useful information to predict the effect of H2O2 treatment on Escherichia coli survival as a basis for understanding the only effects of hydrogen peroxide concentration and pH levels, without considering other factors involved in sanitization such as produce surface characteristics, microorganism attachment features and presence of organic material other than the bacteria. Further similar studies using different E. coli strains and other pathogenic bacteria, biofilms and fresh produce would allow to optimize hydrogen peroxide treatments, avoiding or minimizing adverse effects on quality of fresh produce. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1899190 Wed, 22 Oct 2008 04:00:00 +0100 1899190 http://www.medworm.com/index.php?rid=1899189&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00127.x The effect of osmotic pressure alone or combined with the application of sonication on the reduction of Salmonella spp. in concentrated orange juice was evaluated. Frozen concentrated orange juice (12.6 MPa, pH = 3.2), a neutral sugar solution (9.2 MPa, pH = 6.6) and an acid sugar solution (8.8 MPa, pH = 3.2) were inoculated with Salmonella spp. (6[ndash]7 log cfu/mL). Reductions were measured after different storage times with or without previous sonication treatment of 1 h (42 KHz[ndash]330W). No significant osmotic shock was observed. Reductions appeared to increase over storage time in high osmotic environments. Reductions were also significantly higher for sonicated samples when compared with nonsonicated samples. The highest reduction (7.21 log cfu/mL) was found for concentrated oran... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1899189 Wed, 22 Oct 2008 04:00:00 +0100 1899189 http://www.medworm.com/index.php?rid=1899188&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00126.x Swabbing is the standard methodology for the recovery of resident microorganism from shell eggs in Japan. A comparative study of shell swab (SW) and shell crush (CR) techniques was performed to recover the laboratory-inoculated Salmonella from shell eggs. It was found that the recovery of Salmonella by CR methods was significantly higher (4.5[ndash]7.5 log cfu/egg) than that of SW methods (3.1[ndash]6.3 log cfu/egg). However, analyses with quantitative real-time polymerase chain reaction (invA as a target gene), fluorescent microscopic and quantitative analyses with a Live/Dead BacLight bacterial viability kit revealed that not all of the inoculated Salmonella spp. populations were recovered as intact cells by either method. The chemiluminescent bacterial viability assay showed that chemil... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1899188 Wed, 22 Oct 2008 04:00:00 +0100 1899188 http://www.medworm.com/index.php?rid=1659566&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00123.x Consumption of meat contaminated with Yersinia pestis can cause oro-pharyngeal plague in humans. Existing microbiological media designed for selective detection of Y. pestis in food are not satisfactory for that purpose. Expression of genetic determinants in Yersinia species including low calcium response (Lcr), colony size, crystal violet (CV) binding, Congo red (CR) uptake, autoagglutination (AA) and hydrophobicity (HP) were compared. Lcr and CV binding were detectable within 24 h at 37C in Yersinia enterocolitica and Yersinia pseudotuberculosis but at 48 h in Y. pestis. Colony size, AA, and HP characteristics were expressed in Y. pseudotuberculosis and Y. enterocolitica, but not in Y. pestis. CR uptake in Y. pestis was demonstrated only on calcium-deficient CR-magnesium oxalate (CR-MOX)... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1659566 Mon, 28 Jul 2008 04:00:00 +0100 1659566 http://www.medworm.com/index.php?rid=1659565&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00122.x This study also underlines the need for adequate consumer protection against pathogens transmitted by foods in Iran. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1659565 Mon, 28 Jul 2008 04:00:00 +0100 1659565 http://www.medworm.com/index.php?rid=1659564&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00110.x The aril of the plant Myristica fragrans is one of the most broadly used spices in Moroccan gastronomy. This research demonstrated its antimicrobial activity against both gram-positive and gram-negative bacterial species. Likewise, its toxicity was investigated on Swiss albino mice. Mice were treated orally with 0.003 and 0.3 mg/day during 7 days. Plasmatic markers and antioxidant defense systems were assessed and histological alterations evaluated. Our results showed a significant increase in creatine phosphokinase level. The microscopic evaluation showed that mace induces morphological perturbation in mice's liver. The results also showed an inhibitory effect of glyceraldehyde 3-phosphate dehydrogenase and an important increase in the level of thiobarbituric acid reactive substances, suc... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1659564 Mon, 28 Jul 2008 04:00:00 +0100 1659564 http://www.medworm.com/index.php?rid=1659563&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00109.x Patulin is a frequent contaminant of moldy and rotten apples and apple products. The aim of this study was to evaluate patulin contamination in 58 apple juices collected from a retail market in Mashhad during winter and spring of 2006. Samples were assayed for patulin by high-performance liquid chromatography. Fifty-four samples were positive for patulin at levels that ranged from 10.5 to 121.8 µg/L, and six samples had patulin levels higher than 50 µg/L. The overall mean of patulin concentration was 29.2 ± 19.5 µg/L. Forty-eight samples had patulin concentration between 5 and 50 µg/L. Although the mean concentration of patulin samples was lower than Iranian maximum tolerated level of 50 µg/L, contamination of 10% of the samples at levels higher than 50 µg/L indicated the need for i... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1659563 Mon, 28 Jul 2008 04:00:00 +0100 1659563 http://www.medworm.com/index.php?rid=1659562&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00108.x The essential oil extracted from the leaves of Amomum subulatum Roxb. (Zingiberaceae) has been evaluated for efficacy in the control of mango fruit rotting due to fungal infections. The essential oil of A. subulatum exhibited absolute antifungal activity against two mango rotting fungi viz. Botryodiplodia theobromae Pat. and Colletotrichum gloeosporioides Penz, the common storage fungi causing stem end rot and anthracnose disease of mango fruits. The oil showed its absolute fungitoxicity at the minimum inhibitory concentration of 500 µL/L. Its fungitoxic potency did not alter even on a high inoculum density of the test fungi. The Amomum oil significantly enhanced the shelf life of mango fruits by controlling anthracnose disease as well as stem end rot for an additional five and six days, ... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1659562 Mon, 28 Jul 2008 04:00:00 +0100 1659562 http://www.medworm.com/index.php?rid=1659561&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00107.x A series of experiments was undertaken to determine whether kosher salt reduces persistence of Salmonella serotypes that might cross-contaminate chicken skin on the conveyor belt between the soaking and salting stations in a kosher processing line. The line was simulated in the laboratory because Salmonella could not be inoculated onto chickens in a commercial plant. Prevalence of Salmonella Typhimurium (0.5 log10 cfu) was reduced (P < 0.0001) from 93 to 21% by kosher salt followed by rinsing as compared with 48% for rinsing alone; results were similar for Salmonella Kentucky and for 12 and 24C. Salmonella Hadar was less persistent than the other serotypes. The beneficial effect of kosher salt on reducing persistence of Salmonella was not observed when initial pathogen levels were greater ... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1659561 Mon, 28 Jul 2008 04:00:00 +0100 1659561 http://www.medworm.com/index.php?rid=1659560&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00106.x This article identifies that the incidence of Campylobacter species on processed poultry remains at levels recognized to be potentially infectious to humans. This suggests that current changes in processing control in the Australian poultry industry primarily established for Salmonella species may not necessarily reduce all potential human pathogens to safe levels. Using current literature, this article also debates whether the simple identification of presence and absence of a particular pathogen is sufficient for assumptions to be drawn on risk of infection. The discussion questions the real role of poultry in cases of campylobacteriosis, and suggests that based on case-history data, poultry may be not be the common cause of the disease. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1659560 Mon, 28 Jul 2008 04:00:00 +0100 1659560 http://www.medworm.com/index.php?rid=1659559&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00105.x Tekirda&#x011F; köfte, a Turkish-style meatball, is one of the most popular ground meat products in Turkey. The aim of this study was to evaluate the effect of different nisin and lactoferrin (Lf) concentrations and their combinations on the microbiological quality of Turkish-style meatball (Tekirda&#x011F; köfte). For this purpose, the meatball dough was divided into six equal groups, and each of the groups was treated separately with different nisin and/or Lf concentrations (0, 100 and 200 µg/g). Analyses were performed on each meatball group at 0, 1, 3, 5, 7, 10 and 12 days for microbiological parameters (total mesophilic aerobic bacteria, lactic acid bacteria, coliforms, Escherichia coli, total staphylococcae, Staphylococcus aureus, total psychrophilic bacteria, Pseudomonas spp., su... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1659559 Mon, 28 Jul 2008 04:00:00 +0100 1659559 http://www.medworm.com/index.php?rid=1659558&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00104.x This study was conducted to determine the pathogen prevalence on vacuum loader cup surfaces. An off-line (birds housed off-site) and a mixed (birds housed on-site and eggs brought from outside production) operation shell egg processing facility were sampled three times each. Twenty vacuum loader cups were randomly rinsed with sterile saline per visit. Total aerobic microorganisms and Enterobacteriaceae were enumerated, and the prevalence of Salmonella, Campylobacter and Listeria was determined. Aerobic microorganisms were [sim]5 log cfu/mL, with higher levels noted in the mixed operation. Enterobacteriaceae levels averaged 2.5 log cfu/mL but were higher in the off-line facility. Campylobacter was detected in 1.6% of the samples. Salmonella was detected in 3.3% of the samples with isolates ... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1659558 Mon, 28 Jul 2008 04:00:00 +0100 1659558 http://www.medworm.com/index.php?rid=1659557&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2007.00102.x In this study, fermentations were followed analyzing the microbiological and physicochemical aspects of this product. The sausages were characterized by an important microbial activity of lactic acid bacteria that resulted in a product with a final pH of about 4.56. No Listeria monocytogenes, Salmonella spp. or sulfite reducing clostridia were ever isolated from the raw materials or the fermented sausages during the maturation, underlining the microbial safety of this product. The final water activity of the product was 0.85. Starter cultures showed that Lactobacillus sakei was really efficient in reducing the amine production since this strain caused a quick pH drop during sausage fermentation. A starter culture can be defined as a microbial preparation of large numbers of cells of at lea... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1659557 Mon, 28 Jul 2008 04:00:00 +0100 1659557 http://www.medworm.com/index.php?rid=1659556&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00112.x In conclusion, it could be proposed from the data that the Bonab kebabs sold in Tabriz market had acceptable nutritional value and hygienic quality, but future inspections are necessary for the hygenic quality of places which prepare these foods. A wide range of ready-to-eat foods have been reported as a source of foodborne diseases in different countries. Because of lack of information on the incidence of foodborne diseases related to Bonab kebabs and absence of microbiological standards for this food product, the survey reported here was undertaken to explore populations and profiles of microorganisms on raw and cooked kebabs. Data reported for the first time from this study could be used to inform kebab producers and consumers of the potentially associated microbial hazards and adequate... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1659556 Thu, 01 May 2008 04:00:00 +0100 1659556 http://www.medworm.com/index.php?rid=1613674&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1745-4565.2008.00103.x Decimal reduction times (D values) and zD values for a three-strain cocktail of Yersinia enterocolitica O:9 in three heat-treated liquid egg products (whole eggs, egg yolks and egg whites) were determined. Products were inoculated at a final concentration of 2 × 107 cfu/mL and heated in capillary tubes to temperatures ranging from 51C to 64C for various time intervals. D values ranged from 0.06 (64C) to 11.30 min (55C) for liquid yolk, 0.058 (64C) to 11.29 min (55C) for liquid whole eggs and 0.39 (57C) to 9.88 min (51C) for liquid white. Thermal inactivation curves yielded zD values of 4.20C (whole eggs), 4.51C (egg whites) and 4.53C (egg yolks). D-processes corresponding to the Y. enterocolitica inactivation during 3.5 min at temperatures required for egg pasteurization were estimated in... Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1613674 Thu, 01 May 2008 04:00:00 +0100 1613674 http://www.medworm.com/index.php?rid=1381528&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2008.00103.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety, Volume 28, Issue 2, Page 157-169, May 2008. ABSTRACT Decimal reduction times (D values) and zD values for a three-strain cocktail of Yersinia enterocolitica O:9 in three heat-treated liquid egg products (whole eggs, egg yolks and egg whites) were determined. Products were inoculated at a final ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1381528 Fri, 18 Apr 2008 18:32:55 +0100 1381528 http://www.medworm.com/index.php?rid=1381538&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2008.00121.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR This study compared the microbiological quality of frozen "edamame" to other varieties of frozen beans sold in Virginia. Furthermore, the reduction of microorganisms during experimental edamame processing was investigated. Commercial frozen in-... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1381538 Fri, 18 Apr 2008 06:56:43 +0100 1381538 http://www.medworm.com/index.php?rid=1381530&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2008.00113.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety, Volume 28, Issue 2, Page 183-197, May 2008. ABSTRACT Encapsulation technologies that effectively reduce antimicrobial interaction with food components or protect antimicrobial compounds from food processing measures have the potential to improve the microbiological safety of ready-to-eat foods. ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1381530 Fri, 18 Apr 2008 06:56:40 +0100 1381530 http://www.medworm.com/index.php?rid=1381532&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2008.00115.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety, Volume 28, Issue 2, Page 210-219, May 2008. ABSTRACT The radiation sensitivity of three bacterial isolates (Escherichia coli, Staphylococcus aureus and Salmonella parathyphi B) on jollof rice meal (JRM) was determined. Based on the calculated D10 values, challenge testing of the isolates with ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1381532 Fri, 18 Apr 2008 06:56:38 +0100 1381532 http://www.medworm.com/index.php?rid=1381535&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2008.00118.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety, Volume 28, Issue 2, Page 248-260, May 2008. ABSTRACT The microbial keeping quality of fresh-cut iceberg lettuce was determined after being washed in either cold water (5C) for 3 min or warm water (47C) for 2 min followed by a cold water rinse (5C) and packaged in a modified atmosphere film bag. ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1381535 Fri, 18 Apr 2008 06:56:35 +0100 1381535 http://www.medworm.com/index.php?rid=1381533&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2008.00116.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety, Volume 28, Issue 2, Page 220-235, May 2008. ABSTRACT Four marine Bdellovibrio-and-like organisms (BALOs), viz. BDW01, BDW02, BDW03 and BDW04, were isolated from the Shenzhen Bay of Guangdong province, China, using Vibrio parahaemolyticus (Vp) strain minus as the host bacterium. They were ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1381533 Fri, 18 Apr 2008 06:56:32 +0100 1381533 http://www.medworm.com/index.php?rid=1381529&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2008.00111.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety, Volume 28, Issue 2, Page 170-182, May 2008. ABSTRACT Survival and growth of Enterobacter sakazakii during processing and storage of plain yogurt were investigated. Preheated rehydrated milk was inoculated with a cocktail culture of E. sakazakii (103 cfu/mL of milk) and/or with thermophilic yogurt ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1381529 Fri, 18 Apr 2008 06:56:31 +0100 1381529 http://www.medworm.com/index.php?rid=1381537&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2008.00120.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety, Volume 28, Issue 2, Page 276-299, May 2008. ABSTRACT Foodborne diseases are an important cause of morbidity and mortality and are a growing global concern. A series of recent food safety problems has raised much public concern in the Hong Kong Special Administrative Region *. Despite the fact that ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1381537 Fri, 18 Apr 2008 06:56:28 +0100 1381537 http://www.medworm.com/index.php?rid=1381536&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2008.00119.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR This study aimed to verify the effectiveness of Phyllanthus emblica L. essential oil to inhibit the growth of various food-spoiling yeasts. Antiyeast activity was studied by determining the minimum inhibitory concentration (MIC) by solid medium ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1381536 Fri, 18 Apr 2008 06:56:28 +0100 1381536 http://www.medworm.com/index.php?rid=1381534&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2008.00117.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety, Volume 28, Issue 2, Page 236-247, May 2008. ABSTRACT Sixty-four isolates of Fusarium species isolated from 44 sorghum samples collected during 2004–2005 were subjected to polymerase chain reaction (PCR) analysis. PCR detection was performed on all Fusarium species using two different sets of ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1381534 Fri, 18 Apr 2008 06:56:27 +0100 1381534 http://www.medworm.com/index.php?rid=1381531&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2008.00114.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety, Volume 28, Issue 2, Page 198-209, May 2008. ABSTRACT Biltong and droëwors are ready-to-eat dried seasoned beef strips and sausages, respectively. Procedures to meet process lethality requirements for these products have not been validated. The fate of Salmonella serovars, Escherichia coli O157 : ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1381531 Fri, 18 Apr 2008 06:56:27 +0100 1381531 http://www.medworm.com/index.php?rid=1197225&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00091.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR The objectives of this study were to evaluate consumer attitudes regarding the safety of the food supply, relate food safety concern levels with groups of specific items, regulatory issues and prioritization of food safety funding areas, and to ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1197225 Sat, 02 Feb 2008 20:05:02 +0100 1197225 http://www.medworm.com/index.php?rid=1197232&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00098.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR In this study, Köme with walnuts were investigated for aflatoxin production. One part of stringed walnuts was inoculated at 104 spores/g with the Aspergillus parasiticus NRRL 2999 strain, and the other as control group was not inoculated. The Kö... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1197232 Fri, 01 Feb 2008 22:53:19 +0100 1197232 http://www.medworm.com/index.php?rid=1197230&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00096.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety, Volume 28, Issue 1, Page 76-87, February 2008. ABSTRACT Olive (Olea europaea L.) leaf extracts were obtained using water or different organic solvents such as acetone, methanol and ethyl acetate. Antimicrobial activities of the extracts and some phenolic components were investigated to screen against ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1197230 Fri, 01 Feb 2008 22:53:17 +0100 1197230 http://www.medworm.com/index.php?rid=1197227&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00093.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety, Volume 28, Issue 1, Page 34-46, February 2008. ABSTRACT The effect of Bifidobacterium breve on the survival and growth of Enterobacter sakazakii in rehydrated infant milk formula stored at 4–45C was studied. A commercial culture of B. breve and a five-strain cocktail E. sakazakii were mixed with ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1197227 Fri, 01 Feb 2008 22:53:14 +0100 1197227 http://www.medworm.com/index.php?rid=1197233&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00099.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety, Volume 28, Issue 1, Page 111-125, February 2008. ABSTRACT Foodborne illnesses are a substantial health burden in the United States, with Campylobacter, pathogenic Escherichia coli and Salmonella reported among the major bacterial foodborne pathogens. These organisms are often present in fresh meat and ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1197233 Fri, 01 Feb 2008 22:53:13 +0100 1197233 http://www.medworm.com/index.php?rid=1197228&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00094.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety, Volume 28, Issue 1, Page 47-58, February 2008. ABSTRACT Pastırma was produced from beef meat contaminated with Escherichia coli O157:H7 to investigate the effects of protective cultures on the behavior of E. coli O157:H7 in pastırma manufacturing. After being contaminated with E. coli O157:H7 (105  ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1197228 Fri, 01 Feb 2008 22:53:10 +0100 1197228 http://www.medworm.com/index.php?rid=1197235&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00101.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety, Volume 28, Issue 1, Page 142-156, February 2008. ABSTRACT Published inactivation data of Listeria innocua by high hydrostatic pressure (HHP) were used to compare the prediction capabilities of response surface methodology (RSM) and the proposed Weibull model. A quadratic function was used for the ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1197235 Fri, 01 Feb 2008 22:53:07 +0100 1197235 http://www.medworm.com/index.php?rid=1197229&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00095.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR This study characterized the microflora present in four Queso Fresco-style cheeses made from raw milk (RM) and two cheeses made from pasteurized milk (PM) obtained directly from six different producers in Mexico. Microbial isolates were ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1197229 Fri, 01 Feb 2008 22:53:06 +0100 1197229 http://www.medworm.com/index.php?rid=1197231&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00097.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety, Volume 28, Issue 1, Page 88-102, February 2008. ABSTRACT Alheiras is a traditional Portuguese meat product, typically from the north of the country. To investigate on some of the microbiological and physicochemical characteristics of industrially produced alheira, samples from four factories and six ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1197231 Fri, 01 Feb 2008 22:53:05 +0100 1197231 http://www.medworm.com/index.php?rid=1197234&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00100.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR The objectives of the study were to formulate a rice pudding to be processed by pulsed electric fields (PEF), define suitable PEF parameters and measure the shelf life of PEF-treated rice pudding. Rice pudding was processed by a combination of ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1197234 Fri, 01 Feb 2008 22:52:57 +0100 1197234 http://www.medworm.com/index.php?rid=1197226&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00092.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety, Volume 28, Issue 1, Page 23-33, February 2008. ABSTRACT The antibacterial activity of bovine lactoferrin was tested against Pseudomonas fluorescens and Pseudomonas syringae. The activity was studied by monitoring the growth of a Pseudomonas spp. in the presence or absence of bovine apo-lactoferrin, ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=1197226 Fri, 01 Feb 2008 22:52:54 +0100 1197226 http://www.medworm.com/index.php?rid=946159&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00089.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR The objectives of our study were to investigate the Salmonella species contamination in various types of ready-to-eat street-vended dishes or drinks, to isolate Salmonella spp. from clinical samples and to assess the possible relationship between... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=946159 Fri, 12 Oct 2007 18:15:18 +0100 946159 http://www.medworm.com/index.php?rid=946165&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00084.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety Volume 27, Issue 4, Page 426-444, Nov 2007. ABSTRACT Foodborne illnesses are often linked to foods that have been contaminated postprocessing and exposed to temperature abuse conditions prior to consumption. Limitations in methods to recover sufficient numbers of a target bacterium from an (inocula... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=946165 Fri, 12 Oct 2007 03:20:06 +0100 946165 http://www.medworm.com/index.php?rid=946164&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00086.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety Volume 27, Issue 4, Page 411-425, Nov 2007. ABSTRACT Survival of Escherichia coli K12 suspended in solutions used for enhancing meat products after high-intensity pulsed electric field (PEF) treatments was examined. Solutions were prepared to provide 0.3% salt, 0.3% phosphate and/or 0, 1, 2 or 3% s... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=946164 Fri, 12 Oct 2007 03:20:06 +0100 946164 http://www.medworm.com/index.php?rid=946162&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00087.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety Volume 27, Issue 4, Page 386-399, Nov 2007. ABSTRACT Recent reports indicate the presence of autoinducer-2 (AI-2)-like activity in foods such as milk and tofu; it is unclear what effect this molecule may have on virulence and survivability of foodborne pathogens. Quorum sensing has been implicated ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=946162 Fri, 12 Oct 2007 03:20:06 +0100 946162 http://www.medworm.com/index.php?rid=946163&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00090.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety Volume 27, Issue 4, Page 400-410, Nov 2007. ABSTRACT The behavior of Staphylococcus aureus was studied in sucuk (Turkish dry fermented sausage) with different levels of nettle (Urtica dioica L.). Sucuk batters containing different levels (1, 3 and 5%) of nettle were prepared and contaminated with S... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=946163 Fri, 12 Oct 2007 03:20:05 +0100 946163 http://www.medworm.com/index.php?rid=946161&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00088.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety Volume 27, Issue 4, Page 373-385, Nov 2007. ABSTRACT In the study, the efficacies of bifidocin B and lactococcin R produced by Bifidobacterium bifidum and Lactococcus lactis subsp. cremoris R to control Listeria monocytogenes or Bacillus cereus in irradiated raw chicken breast during storage at 5–8... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=946161 Fri, 12 Oct 2007 03:20:05 +0100 946161 http://www.medworm.com/index.php?rid=946160&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00085.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety Volume 27, Issue 4, Page 362-372, Nov 2007. ABSTRACT Listeria monocytogenes is one of the most important foodborne pathogens causing illness in humans and animals. Thus, a study was undertaken to investigate the incidence of Listeria species in fresh and dry fish samples marketed in Mysore, India. ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=946160 Fri, 12 Oct 2007 03:20:05 +0100 946160 http://www.medworm.com/index.php?rid=759398&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00076.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety Volume 27, Issue 3, Page 241-250, Aug 2007. ABSTRACT The aim of this work was to identify the spoilage microorganisms in commercially produced crème caramel and to study their growth kinetic in different conservation conditions. Fifty-four randomly selected strains were isolated from altered crème ... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=759398 Thu, 26 Jul 2007 18:08:33 +0100 759398 http://www.medworm.com/index.php?rid=759405&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00083.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety Volume 27, Issue 3, Page 326-343, Aug 2007. ABSTRACT The survival of Campylobacter jejuni and Campylobacter coli at pH 7.0, 6.0, 5.0 and 4.0 for up to 24 h, and the induction of an acid adaptation response in 12 C. jejuni and 10 C. coli strains in early exponential or late stationary phases in tryp... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=759405 Thu, 26 Jul 2007 01:46:07 +0100 759405 http://www.medworm.com/index.php?rid=759404&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00082.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety Volume 27, Issue 3, Page 317-325, Aug 2007. ABSTRACT Yersinia pestis is the causative agent of plague. While rare, pharyngeal plague in humans has been associated with consumption or handling of meat prepared from infected animals, and the risks of contracting plague from consumption of deliberatel... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=759404 Thu, 26 Jul 2007 01:46:07 +0100 759404 http://www.medworm.com/index.php?rid=759403&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00081.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR This study investigates factors influencing customers' choice of dining-out units after a test of validity and reliability of the questionnaire. The study was conducted at a private university with a 243-member academic staff in Ankara, Turkey. R... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=759403 Thu, 26 Jul 2007 01:46:07 +0100 759403 http://www.medworm.com/index.php?rid=759402&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00080.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR In this study, we evaluated the efficiency of four methods quoted in the literature to extract hepatitis A virus (HAV) from naturally con... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=759402 Thu, 26 Jul 2007 01:46:07 +0100 759402 http://www.medworm.com/index.php?rid=759401&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00079.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety Volume 27, Issue 3, Page 275-285, Aug 2007. ABSTRACT The effectiveness of a typical production process for eliminating Escherichia coli O157:H7 in directly acidified all-beef summer sausage was evaluated for formulations of different fat contents (approximately 8 and 17%) and types of direct acidul... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=759401 Thu, 26 Jul 2007 01:46:07 +0100 759401 http://www.medworm.com/index.php?rid=759400&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00078.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety Volume 27, Issue 3, Page 265-274, Aug 2007. ABSTRACT The effect of lysostaphin from Staphylococcus simulans expressed in Escherichia coli TOP10 strain on Staphylococcus aureus used for inoculation of milk, ground pork and mayonnaise salad was investigated. The populations of this pathogen in ultrah... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=759400 Thu, 26 Jul 2007 01:46:07 +0100 759400 http://www.medworm.com/index.php?rid=759399&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00077.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR This study aimed at the isolation and identification of Klebsiella spp. from dairy product to establish their public health significance by determining their virulence factors, antibiotic resistance and extended-spectrum β-lactamase (ESBL). Klebs... (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=759399 Thu, 26 Jul 2007 01:46:07 +0100 759399 http://www.medworm.com/index.php?rid=665275&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00057.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety Volume 27, Issue 2, Page 111-123, May 2007. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=665275 Thu, 07 Jun 2007 18:10:18 +0100 665275 http://www.medworm.com/index.php?rid=665285&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00075.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety Volume 27, Issue 2, Page 233-240, May 2007. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=665285 Wed, 06 Jun 2007 18:25:14 +0100 665285 http://www.medworm.com/index.php?rid=665280&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00070.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety Volume 27, Issue 2, Page 169-187, May 2007. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=665280 Wed, 06 Jun 2007 18:25:14 +0100 665280 http://www.medworm.com/index.php?rid=665284&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00074.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety Volume 27, Issue 2, Page 219-232, May 2007. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=665284 Wed, 06 Jun 2007 18:25:13 +0100 665284 http://www.medworm.com/index.php?rid=665281&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00071.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety Volume 27, Issue 2, Page 188-198, May 2007. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=665281 Wed, 06 Jun 2007 18:25:13 +0100 665281 http://www.medworm.com/index.php?rid=665279&cid=s_32626_143_f&fid=32626&url=http%3A%2F%2Fwww.blackwell-synergy.com%2Fdoi%2Fabs%2F10.1111%2Fj.1745-4565.2007.00069.x%3Fai%3Dgsl%26mi%3D4mpuw%26af%3DR Journal of Food Safety Volume 27, Issue 2, Page 157-168, May 2007. (Source: Journal of Food Safety) Journal of Food Safety journals http://www.medworm.com/rss/comments.php?id=665279 Wed, 06 Jun 2007 18:25:13 +0100 665279