Phytochemical Analysis via MedWorm.com 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 'Phytochemical Analysis' source. Thu, 09 Feb 2012 13:38:42 +0100 Determination of Aflatoxins in Medicinal Herbs by High‐performance Liquid Chromatography–Tandem Mass Spectrometry http://www.medworm.com/index.php?rid=5673717&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.2343 ConclusionThis simple and accurate method effectively eliminates false positive detection and can be used to determine the AFs in medicinal herbs to control product quality. We found that in the 174 samples tested, 27 were contaminated with AFs. The incidences of AFB1, AFB2, AFG1 and AFG2 in the samples tested were 15.52%, 14.37%, 6.32% and 2.30%, respectively. We proposed 10 µg/kg total AFs and 5 µg/kg AFB1 as the reasonable maximum limits (ML) in medicinal herbs, and there are 10 samples (5.71% occurrence) in our test that exceeded this proposed limit. Copyright © 2012 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5673717 Thu, 09 Feb 2012 05:00:00 +0100 5673717 Rapid Profiling of Intact Glucosinolates in Arabidopsis Leaves by UHPLC‐QTOFMS Using a Charged Surface Hybrid Column http://www.medworm.com/index.php?rid=5673716&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.2350 ConclusionThe method developed can profile the full range of GS, including the most polar ones, in a shorter time than previous methods, and is highly compatible with mass spectrometric detection. Copyright © 2012 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5673716 Thu, 09 Feb 2012 05:00:00 +0100 5673716 Ultrasonic Microwave‐assisted Extraction Coupled with High‐speed Counter‐Current Chromatography for the Preparation of Nigakinones from Picrasma quassioides (D.Don) Benn http://www.medworm.com/index.php?rid=5673715&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.2352 ConclusionUMAE coupled with HSCCC was found to be a promising and feasible alternative method to separate and purify alkaloids from natural herbs such as P. quassiodes. Copyright © 2012 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5673715 Thu, 09 Feb 2012 05:00:00 +0100 5673715 Chemical Composition of South American Burseraceae Non‐volatile Oleoresins and Preliminary Solubility Assessment of their Commercial Blend http://www.medworm.com/index.php?rid=5673714&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.2351 ConclusionThe experimental results, complemented by a general inspection of the literature, demonstrated a systematically reproducible triterpene profile in Protium and Trattinnickia species. Copyright © 2012 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5673714 Thu, 09 Feb 2012 05:00:00 +0100 5673714 Optimisation of Ultrasound‐assisted Extraction of Puerarin and Total Isoflavones from Puerariae Lobatae Radix (Pueraria lobata (Wild.) Ohwi) with Response Surface Methodology http://www.medworm.com/index.php?rid=5616810&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.2349 ConclusionThe RSM allows for optimising the extraction parameters such that maximum extraction of puerarin and total isoflavones was achieved experimentally. Copyright © 2012 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5616810 Wed, 18 Jan 2012 05:00:00 +0100 5616810 Tandem Solid Phase Extraction Followed by Online Trapping–Hydrophilic Interaction Chromatography–Tandem Mass Spectrometry for Sensitive Detection of Endogenous Cytokinins in Plant Tissues http://www.medworm.com/index.php?rid=5673713&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.2353 ConclusionThe tandem SPE–online trapping–HILIC‐MS/MS method developed in current study provides a powerful tool for the convenient and highly sensitive quantification of the major CKs in plant tissue. Copyright © 2012 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5673713 Sun, 01 Jan 2012 05:00:00 +0100 5673713 Chemometric Classification of Morphologically Similar Umbelliferae Medicinal Herbs by DART‐TOF‐MS Fingerprint http://www.medworm.com/index.php?rid=5624440&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.2348 ConclusionElaborating with chemoinformatics, DART‐TOF‐MS fingerprinting can be applied as a powerful method for rapid classification of morphologically similar Umbelliferae medicinal herbs and quality control of medicinal herbal products, including the extract of these crude drugs. Copyright © 2012 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5624440 Sun, 01 Jan 2012 05:00:00 +0100 5624440 Stability Studies of Crude Plant Material of Bacopa monnieri and Quantitative Determination of Bacopaside I and Bacoside A by HPLC http://www.medworm.com/index.php?rid=5616809&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.2347 ConclusionThe study indicated that BM plant material should be used fresh to obtain maximum concentration of active saponins or it should be stored under LS conditions up to 3 months. Copyright © 2012 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5616809 Sun, 01 Jan 2012 05:00:00 +0100 5616809 Isolation and Quantitation of Ecologically Important Phloroglucinols and Other Compounds from Eucalyptus jensenii http://www.medworm.com/index.php?rid=5576420&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.2345 ConclusionThe method described for isolation of jensenone is a simple, rapid and low‐cost procedure amenable to the preparative scale. A new monomeric phloroglucinol compound was isolated and characterised from the acetone extract of E. jensenii leaves. The HPLC method developed can be applied successfully to different eucalypt matrices for precise and accurate determination of 19 secondary metabolites belonging to different chemical classes. Copyright © 2012 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5576420 Sun, 01 Jan 2012 05:00:00 +0100 5576420 Phenolic Compounds and Anti‐oxidant Capacity of Twelve Morphologically Heterogeneous Bamboo species http://www.medworm.com/index.php?rid=5568411&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1377 ConclusionThe most abundant classes of phenolic compounds present in a selection of bamboo species were flavone glycosides and phenolic acids. Luteolin flavones and phenolic acids are the main anti‐oxidant phenolic compounds in bamboo leaf extract. The information obtained in this study provides further support for the development of bamboo‐based anti‐oxidant food applications and food supplements. Copyright © 2012 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5568411 Sun, 01 Jan 2012 05:00:00 +0100 5568411 Characterisation and Quantification of Flavonoids in Iris germanica L. and Iris pallida Lam. Resinoids from Morocco http://www.medworm.com/index.php?rid=5556634&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1379 ConclusionThe study shows that I. germanica and I. pallida resinoids are rich in flavonoids and that these two Iris species can be distinguished by simply analysing the polyphenol fraction. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5556634 Sun, 01 Jan 2012 05:00:00 +0100 5556634 Towards an Efficient Protocol for the Determination of Triterpenic Acids in Olive Fruit: A Comparative Study of Drying and Extraction Methods http://www.medworm.com/index.php?rid=5556635&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1378 ConclusionThis study provides a rapid and low‐cost extraction method, i.e. ultrasonic assisted extraction with an eco‐friendly solvent such as ethanol, from frozen or lyophilised olive fruit for the accurate determination of the triterpenic acid content in olive fruit. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5556635 Fri, 30 Dec 2011 05:00:00 +0100 5556635 High‐sensitivity Determination of Curcumin in Human Urine Using Gemini Zwitterionic Surfactant as a Probe by Resonance Light Scattering Technique http://www.medworm.com/index.php?rid=5532912&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1380 ConclusionThe proposed method can be used to detect the content of curcumin in human urine samples and this new assay using PQAS as a probe was more sensitive and displayed a wider linear range than that reported previously. Copyright © 2011 John Wiley & Sons, Ltd.A novel high‐sensitivity assay for determination of curcumin is proposed based on the intense resonance light scattering (RLS) enhancement due to the interaction between curcumin and phosphodiesters quaternary ammonium salt (PQAS). There is a good linear relationship between ΔIRLS and the concentration of curcumin in the range of 0.08–60.0 µg/mL. The detection limit (3σ) was 2.6 ng/mL. The proposed assay could be used to detect curcumin in body fluid samples and was more sensitive than that reported previously. (S... Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5532912 Fri, 23 Dec 2011 07:10:28 +0100 5532912 Bio‐assay Guided Isolation of α‐Glucosidase Inhibitory Constituents from Hibiscus Mutabilis Leaves http://www.medworm.com/index.php?rid=5500888&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1375 ConclusionThe identification of α‐glucosidase inhibition activity in H. mutabilis supports further investigations into the possible use of the plant for the management of diabetes. The HPLC method validated for these extracts will be useful in future research with the plant. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5500888 Wed, 14 Dec 2011 07:48:20 +0100 5500888 Simultaneous Determination of Four Sesquiterpenoids in Atractylodes Macrocephala Rhizoma by GC‐FID: Optimisation of an Ultrasound‐assisted Extraction by Central Composite Design http://www.medworm.com/index.php?rid=5417115&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1373 ConclusionThe results indicated that the described GC method could be used for the quality control of AMR and its related preparations. Meanwhile, this research revealed that UAE under optimum conditions could be considered as a powerful tool for the extraction of phytochemicals from plants. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5417115 Thu, 17 Nov 2011 05:00:00 +0100 5417115 LC‐UV Assay Method and UPLC/Q‐TOF‐MS Characterisation of Saponins from Ilex Paraguariensis A. St. Hil. (Mate) Unripe Fruits http://www.medworm.com/index.php?rid=5437053&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1374 ConclusionThe validated LC‐UV method was shown to be linear, precise, accurate and to cover several saponins previously isolated from Ilex species and could be applied for the quality control of unripe fruit saponins. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5437053 Tue, 01 Nov 2011 04:00:00 +0100 5437053 A Validated Method for the Simultaneous Quantitation of Bioactive Alkaloid Markers in the Leaf Ethanolic Extract of Cissampelos sympodialis Eichl.: a Phenological Variation Study http://www.medworm.com/index.php?rid=5427811&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1376 ConclusionThe results demonstrated that significant variations in the concentration of the biomarkers occurred throughout the vegetative cycle. The lowest concentration of the alkaloids in the leaves coincided with their appearance in the ripened fruits. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5427811 Tue, 01 Nov 2011 04:00:00 +0100 5427811 TLC Bioautographic Method for Detecting Lipase Inhibitors http://www.medworm.com/index.php?rid=5417114&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1372 ConclusionThe screening test was able to detect lipase inhibition by pure reference substances and by compounds present in complex matrices, such as plant extracts. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5417114 Tue, 01 Nov 2011 04:00:00 +0100 5417114 Comparison of Headspace Solid‐phase Microextraction, Headspace Single‐drop Microextraction and Hydrodistillation for Chemical Screening of Volatiles in Myrtus Communis L http://www.medworm.com/index.php?rid=5396403&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1368 ConclusionThe results demonstrated that HS‐SPME and HS‐SDME can be applied successfully for the extraction and separation of volatiles in aromatic plants, and these techniques are easier to perform, and more effective than HD for collection of more volatile compounds. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5396403 Tue, 01 Nov 2011 04:00:00 +0100 5396403 Preparative Separation of Methylswertianin, Swerchirin and Decussatin from the Tibetan Medicinal Plant Swertia Mussotii Using High‐speed Counter‐current Chromatography http://www.medworm.com/index.php?rid=5374692&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1362 ConclusionThree xanthones in Swertia mussotii could be systematically isolated and purified using HSCCC. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5374692 Tue, 01 Nov 2011 04:00:00 +0100 5374692 Analysis of Cardamonin by Square Wave Voltammetry http://www.medworm.com/index.php?rid=5355020&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1370 ConclusionCardamonin was detected voltammetrically. The LOD and limit of quantification (LOQ) of the proposed voltammetric methodology are adequate for trace analysis of this compound in several phytochemical matrices. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5355020 Thu, 27 Oct 2011 23:17:43 +0100 5355020 Determination of Nucleosides and Nucleobases in the Pollen of Typha Angustifolia by UPLC‐PDA‐MS http://www.medworm.com/index.php?rid=5355022&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1367 ConclusionThe UPLC method established is very helpful for optimising their content and could be convenient for quality evaluation of the pollen of T. angustifolia, which has not been reported as far as we are aware. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5355022 Mon, 24 Oct 2011 04:00:00 +0100 5355022 Quality Assessment of Commercial Magnoliae Officinalis Cortex by 1H‐NMR‐based Metabolomics and HPLC Methods http://www.medworm.com/index.php?rid=5355021&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1369 ConclusionThe combination of 1H‐NMR that gives a comprehensive profile of the metabolites and HPLC that targets two biomarkers is an efficient means for a better quality control of Magnoliae officinalis Cortex. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5355021 Mon, 24 Oct 2011 04:00:00 +0100 5355021 Chemical‐based Species Classification of Rhubarb Using Simultaneous Determination of Five Bioactive Substances by HPLC and LDA Analysis http://www.medworm.com/index.php?rid=5330187&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1365 ConclusionA chemical‐based species classification method of rhubarb using simultaneous determination of bioactive compounds by HPLC was developed with 39 known samples of five different species and successfully applied to identify 57 unknown samples collected from Korea and China. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5330187 Tue, 18 Oct 2011 04:00:00 +0100 5330187 Establishment and Application of a Metabolomics Workflow for Identification and Profiling of Volatiles from Leaves of Vitis vinifera by HS‐SPME‐GC‐MS http://www.medworm.com/index.php?rid=5330186&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1364 ConclusionThe developed workflow enabled the identification of grapevine leaf metabolites, which allowed the separation of leaves from two sampling dates by PCA. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5330186 Tue, 18 Oct 2011 04:00:00 +0100 5330186 Optimisation of Infrared‐assisted Extraction of Rutin from Crude Flos Sophorae Immaturus Using Response Surface Methodology and HPLC Analysis http://www.medworm.com/index.php?rid=5330185&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1357 ConclusionThe application of response surface methodology was reliable and feasible in the optimisation of infrared‐assisted extraction of rutin from crude Flos Sophorae Immaturus. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5330185 Tue, 18 Oct 2011 04:00:00 +0100 5330185 Quantitative and Transformation Product Analysis of Major Active Physalins from Physalis Alkekengi Var. Franchetii (Chinese Lantern) Using Ultraperformance Liquid Chromatography with Electrospray Ionisation Tandem Mass Spectrometry and Time‐of‐flight Mass Spectrometry http://www.medworm.com/index.php?rid=5321212&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1363 ConclusionThe present study developed a highly effective analytical method for the quality control of Chinese lantern, and it could provide comprehensive information for quality evaluation and new drug development of Chinese lantern. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5321212 Thu, 13 Oct 2011 04:00:00 +0100 5321212 Development of a Rapid Resolution Liquid Chromatographic Method Combined with Chemometrics for Quality Control of Angelicae dahuricae radix http://www.medworm.com/index.php?rid=5268323&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1358 ConclusionThis study revealed that sulphur‐fumigation is an inappropriate approach for processing crude drugs and should be prohibited, and that the proposed RRLC method combined with chemometrics demonstrated an efficient strategy for quality control of Baizhi. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5268323 Thu, 29 Sep 2011 04:00:00 +0100 5268323 Screening and Determination for Potential α‐Glucosidase Inhibitors from Leaves of Acanthopanax senticosus Harms by Using UF‐LC/MS and ESI‐MSn http://www.medworm.com/index.php?rid=5256970&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1360 ConclusionThe results obtained provided new information for the discovery of potential α‐glucosidase inhibitors and the potential anti‐diabetic application of the leaves of A. senticosus Harms. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5256970 Mon, 26 Sep 2011 04:00:00 +0100 5256970 A Validated Fourier Transform Infrared Spectroscopy Method for Quantification of Total Lactones in Inula racemosa and Andrographis paniculata http://www.medworm.com/index.php?rid=5256972&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1339 ConclusionThe FT‐IR spectroscopy method proved linear, accurate, precise and specific, with low limits of detection and quantification, for estimation of total lactones, and is less tedious than the UV spectrophotometric method for the compounds tested. This validated FT‐IR spectroscopy method is readily applicable for the quality control of I. racemosa and A. paniculata. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5256972 Fri, 23 Sep 2011 04:00:00 +0100 5256972 Effect of Storage Time and Conditions on the Diene Valepotriates Content of the Extract of Valeriana glechomifolia Obtained by Supercritical Carbon Dioxide http://www.medworm.com/index.php?rid=5256971&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1346 ConclusionSF‐CO2 showed high selectivity for valepotriates extraction. This is the first report on valepotriates molecular conversion, which was less accelerated when the extract was stored in methanol, but under this condition degradation products are also present, probably baldrinals, that are not observed in the dry extract. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5256971 Fri, 23 Sep 2011 04:00:00 +0100 5256971 A Comparative Study of Matrix‐ and Nano‐assisted Laser Desorption/Ionisation Time‐of‐Flight Mass Spectrometry of Isolated and Synthetic Lignin http://www.medworm.com/index.php?rid=5203815&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1350 ConclusionOwing to the ionisation profile differentiation from MALDI‐TOF MS, NALDI‐TOF MS is useful for the structural analysis of lignin. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5203815 Wed, 07 Sep 2011 04:00:00 +0100 5203815 The Use of Coupled HSQC Spectra to Aid in Stereochemical Assignments of Molecules with Severe Proton Spectral Overlap http://www.medworm.com/index.php?rid=5203814&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1354 ConclusionThe study has shown the effectiveness of the use of a high‐resolution coupled HSQC spectrum in the assignment of molecules with severe spectral overlap. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5203814 Wed, 07 Sep 2011 04:00:00 +0100 5203814 HPLC Determination of Flavonoid Glycosides in Mongolian Dianthus versicolorFisch. (Caryophyllaceae) Compared with Quantification by UV Spectrophotometry http://www.medworm.com/index.php?rid=5203813&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1351 ConclusionThe study has indicated that the newly developed HPLC method represents a powerful technique for the quality control of D. versicolor. Ultraviolet spectrophotometry may be used alternatively provided that the less polar flavonoids are removed by purification. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5203813 Wed, 07 Sep 2011 04:00:00 +0100 5203813 Quality Evaluation of a Herbal Prescription Through Quantification of 40 Components by HPLC–ESI–MS/MS http://www.medworm.com/index.php?rid=5343352&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1366 ConclusionThe established method is simple and can be used as a tool for quality evaluation and control of this natural product. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5343352 Thu, 01 Sep 2011 04:00:00 +0100 5343352 Effects of Auxins on the Production of Steroidal Alkaloids in Rapidly Proliferating Tissue and Cell Cultures of Solanum lyratum http://www.medworm.com/index.php?rid=5330184&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1371 ConclusionAuxins were found to be useful phytohormones for the production of steroidal alkaloids. The callus and cell culture system developed is simple and can hence be a method of production of steroidal alkaloids in S. lyratum and other Solanaceae species. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5330184 Thu, 01 Sep 2011 04:00:00 +0100 5330184 Eco‐friendly separation of catechins using cyclodextrins as mobile phase additives in RP‐HPLC http://www.medworm.com/index.php?rid=5321211&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1359 ConclusionThis work developed a simple eco‐friendly method with the lowest concentration of organic solvents. Under the optimal condition, five catechins could be baseline separated within 17 minutes in the isocratic mode. This research exhibited the potential for the separation and determination of other active compounds from natural plants by a greener method. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5321211 Thu, 01 Sep 2011 04:00:00 +0100 5321211 Simultaneous Determination of Sulphur metabolites in Arabidopsis thaliana via LC‐ESI‐MS/MS and 34S‐metabolic Labelling http://www.medworm.com/index.php?rid=5310458&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1361 ConclusionThe validated method for determination of methionine, reduced glutathione and oxidised glutathione was effectively applied to measure metabolite dynamics of sulphur‐containing metabolites at the whole‐plant level. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5310458 Thu, 01 Sep 2011 04:00:00 +0100 5310458 Enhanced Sample Preparation for Quantitation of Microcystins by Matrix‐assisted Laser Desorption/Ionisation–Time of Flight Mass Spectrometry http://www.medworm.com/index.php?rid=5268322&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1356 ConclusionThe study demonstrates that with different sample preparation methods and modern instrumentation, large numbers of samples can be analysed rapidly for MCs at low cost. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5268322 Thu, 01 Sep 2011 04:00:00 +0100 5268322 Alkaloid Profiling as an Approach to Differentiate Lupinus garfieldensis, Lupinus sabinianus and Lupinus sericeus http://www.medworm.com/index.php?rid=5256969&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1355 ConclusionThe alkaloid profiles of Lupinus sabinianus, L. garfieldensis and L. sericeus can be used as a tool to discriminate these species from each other and L. sulphureus as long as one considers locality of the collection in the case of L. sabinianus. Published 2011. This article is a US Government work and is in the public domain in the USA. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5256969 Thu, 01 Sep 2011 04:00:00 +0100 5256969 Monitoring of Phenolic Compounds for the Quality Control of Melissa officinalis Products by Capillary Electrophoresis http://www.medworm.com/index.php?rid=5203812&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1340 ConclusionsThe proposed methodology can be applied to the standardisation and quality control of plant material and phytopharmaceutical products derived from the Lamiaceae family, as indicated by the results obtained in the analysis of commercial medicinal products in Argentina. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5203812 Thu, 01 Sep 2011 04:00:00 +0100 5203812 Analysis of C‐glycosyl Flavonoids from South American Passiflora Species by HPLC‐DAD and HPLC‐MS http://www.medworm.com/index.php?rid=5155241&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1348 ConclusionThe methods established are simple and can be used as a tool for the characterisation and quality control of pharmaceutical preparations containing these Passiflora extracts. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5155241 Sat, 20 Aug 2011 23:00:00 +0100 5155241 A Thin‐layer Chromatography Method for the Identification of Three Different Olibanum Resins (Boswellia serrata, Boswellia papyrifera and Boswellia carterii, respectively, Boswellia sacra) http://www.medworm.com/index.php?rid=5155242&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1341 ConclusionThe TLC method developed allows unambiguous identification of three different olibanum samples (Boswellia papyrifera, Boswellia serrata, Boswellia carterii/Boswellia sacra). Evidence on the specific biosynthesis routes of these Boswellia species is reported. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5155242 Fri, 19 Aug 2011 23:00:00 +0100 5155242 Determination of Carotenoids and their Esters in Fruits of Sea Buckthorn (Hippophae rhamnoides L.) by HPLC‐DAD‐APCI‐MS http://www.medworm.com/index.php?rid=5155246&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1353 ConclusionA novel (HPLC‐DAD‐APCI‐MS) method was developed for the direct identification of the native carotenoid composition in fruits of Hippophae rhamnoides. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5155246 Wed, 17 Aug 2011 23:00:00 +0100 5155246 1H‐NMR Simultaneous Identification of Health‐Relevant Compounds in Propolis Extracts http://www.medworm.com/index.php?rid=5155245&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1352 ConclusionThis work suggests that it is possible to efficiently use 1H‐NMR, coupled with appropriate spectral analytical tools, for the simultaneous detection of phenolic compounds in complex matrices. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5155245 Wed, 17 Aug 2011 23:00:00 +0100 5155245 Quality Evaluation of Desmodium styracifolium Using High‐performance Liquid Chromatography with Photodiode Array Detection and Electrospray Ionisation Tandem Mass Spectrometry http://www.medworm.com/index.php?rid=5155244&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1349 ConclusionThe assay developed could be considered as a suitable quality control method of D. styracifolium. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5155244 Wed, 17 Aug 2011 23:00:00 +0100 5155244 Separation of Four Homoisoflavonoids from Caesalpinia sappan by High‐speed Counter‐current Chromatography http://www.medworm.com/index.php?rid=5155243&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1347 ConclusionThe study has shown that HSCCC is effective for the separation and enrichment of the target compounds at a large scale. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5155243 Wed, 17 Aug 2011 23:00:00 +0100 5155243 Qualitative and Quantitative Evaluation of Phenolic Compounds in Iris dichotoma Pall http://www.medworm.com/index.php?rid=5076147&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1343 ConclusionThe methodology developed proved to be effective for the identification and quantification of phenolic compounds in the rhizomes of I. dichotoma. Samples were classified into three groups according to their geographical origin based on their phenolic composition using principal component analysis. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5076147 Thu, 28 Jul 2011 23:00:00 +0100 5076147 Two‐dimensional Hydrophilic Interaction/Reversed‐phase Liquid Chromatography for the Preparative Separation of Polar and Non‐polar Taxanes http://www.medworm.com/index.php?rid=5076146&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1338 ConclusionCombination of hydrophilic and reversed‐phase chromatography in two‐dimensional liquid chromatography (2D‐LC) systems is a useful method for the separation of compounds with a large polarity range such as taxanes. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5076146 Thu, 28 Jul 2011 23:00:00 +0100 5076146 The Most Frequently Encountered Volatile Contaminants of Essential Oils and Plant Extracts Introduced During the Isolation Procedure: Fast and Easy Profiling http://www.medworm.com/index.php?rid=5047991&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1334 ConclusionA database of the most common semi‐volatile contaminants of essential oils and plant extracts has been generated that provides information on the likelihood of rejection or acceptance of contaminants as possible plant constituents. The suggested average mass scan approach enables fast and easy profiling of solvents, allowing even inexperienced researchers to pinpoint contaminants. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5047991 Mon, 18 Jul 2011 23:00:00 +0100 5047991 Preparative Isolation, Fast Centrifugal Partition Chromatography Purification and Biological Activity of Cajaflavanone from Derris ferruginea Stems http://www.medworm.com/index.php?rid=5047990&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1336 ConclusionA simple and efficient procedure, in comparison with other preparative methods, for bioactive cajaflavone purification has been developed using FCPC. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5047990 Mon, 18 Jul 2011 23:00:00 +0100 5047990 Aroma Evaluation of Gamazumi (Viburnum dilatatum) by Aroma Extract Dilution Analysis and Odour Activity Value http://www.medworm.com/index.php?rid=5155240&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1344 ConclusionOn the basis of AEDA, OAVs and sensory evaluations, nonanal is estimated as the main aroma compound of leaf and branch oil, as the other aroma compounds, C6 compounds and 2‐pentyl furan make green odour; linalool, eugenol and β‐ionone play important role in the sweet odour of leaf oil. In branch oil, cis‐furanlinalool oxide and eugenol make sweet odour, and β‐eudesmol contributes to woody odour. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5155240 Thu, 30 Jun 2011 23:00:00 +0100 5155240 Helichrysum monizii Lowe: Phenolic Composition and Antioxidant Potential http://www.medworm.com/index.php?rid=5124272&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1326 ConclusionsThe high antioxidant potential Helichrysum monizii was for the first time established. Dicaffeoylquinic acids are the main responsible for that activity. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5124272 Thu, 30 Jun 2011 23:00:00 +0100 5124272 HPLC Analysis of Oxindole Alkaloids in Uncaria Tomentosa: Sample Preparation and Analysis Optimisation by Factorial Design http://www.medworm.com/index.php?rid=5093969&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1335 ConclusionThe optimised chromatographic method, using organic buffer in the mobile phase, provided baseline separation of tetracyclic and pentacyclic alkaloids in the samples. Calibration using mitraphylline provided more accurate estimates of total alkaloid content when compared to other available reference alkaloids. Copyright © 2011 John Wiley & Sons Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5093969 Thu, 30 Jun 2011 23:00:00 +0100 5093969 Simultaneous Determination of Plant Growth Regulators 1‐Naphthylacetic Acid and 2‐Naphthoxyacetic Acid in Fruit and Vegetable Samples by Room Temperature Phosphorescence http://www.medworm.com/index.php?rid=5076145&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1345 ConclusionThe proposed method affords the determination of 1‐naphthylacetic acid and 2‐naphthoxyacetic acid in real samples with near‐quantitative recoveries from agricultural products. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5076145 Thu, 30 Jun 2011 23:00:00 +0100 5076145 Determination of Natural Pyrethrins by Liquid Chromatography‐Electron Ionisation‐Mass Spectrometry http://www.medworm.com/index.php?rid=5047989&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1342 ConclusionThe nanoLC‐direct EI‐MS technique can be a useful tool for the detection of pyrethrins. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5047989 Thu, 30 Jun 2011 23:00:00 +0100 5047989 Isolation of High Quality RNA from Cereal Seeds Containing High Levels of Starch http://www.medworm.com/index.php?rid=5017554&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1337 ConclusionThe study has described an easy, efficient and highly reproducible method for RNA isolation from various cereal seeds. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=5017554 Thu, 30 Jun 2011 23:00:00 +0100 5017554 Rapid Identification of Cyclic Tetrapyrrolic Photosensitisers for Photodynamic Therapy Using On‐line Hyphenated LC‐PDA‐MS Coupled with Photo‐cytotoxicity Assay http://www.medworm.com/index.php?rid=4951152&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1324 Conclusion – This method serves as a useful tool in prioritising samples that may contain new photosensitisers out of a larger group of photo‐cytotoxic natural products extracts. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4951152 Tue, 21 Jun 2011 16:39:11 +0100 4951152 Characterisation of the Degradation of Salvianolic Acid B Using an On‐line Spectroscopic Analysis System and Multivariate Curve Resolution http://www.medworm.com/index.php?rid=4951154&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1330 ConclusionThe findings suggested that the combined use of on‐line spectroscopic analysis and MCR might be a cheap, readily available, sensitive tool to monitor the transformation of unstable components of Chinese herbal medicines. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4951154 Mon, 20 Jun 2011 23:00:00 +0100 4951154 Investigations into the Phenolic Constituents of Dog's Mercury (Mercurialis perennis L.) by LC‐MS/MS and GC‐MS analyses http://www.medworm.com/index.php?rid=4951153&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1325 ConclusionsThe present investigation constitutes the first comprehensive report on the hydrophilic constituents of the rarely studied plant Mercurialis and thus completes the phytochemical knowledge on M. perennis. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4951153 Mon, 20 Jun 2011 23:00:00 +0100 4951153 A New Method for the Simultaneous Analysis of Strychnine and Brucine in Strychnos nux‐vomica Unprocessed and Processed Seeds Using a Carbon‐paste Electrode Modified with Multi‐walled Carbon Nanotubes http://www.medworm.com/index.php?rid=4860971&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1327 ConclusionA new, sensitive and selective method was developed for the measurement of strychnine and brucine. This method was successfully applied to the determination of strychnine and brucine in unprocessed and processed Strychnos nux‐vomica seed. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4860971 Tue, 24 May 2011 23:00:00 +0100 4860971 1H‐NMR Analysis of Terpene Trilactones (TTLs) in Ginkgo biloba: Green Female Leaves Contain the Most TTLs http://www.medworm.com/index.php?rid=4860970&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1328 ABSTRACTTerpene trilactones (TTLs), unique components of Ginkgo biloba extracts, are believed to play important roles in the biological activity of these materials. The investigation of seasonal and gender‐related variations in the natural content of TTLs in the leaves is a challenging problem that must be addressed in order to establish more efficient extraction/isolation protocols for TTLs.The aims of this work were (i) to modify the extraction/isolation protocols of TTLs from G. biloba leaves by means of boiling and filtration procedures, and (ii) to investigate seasonal and gender‐related variations in the TTL content of the leaves via 1H‐NMR analysis.When extracting TTLs from G. biloba leaves, procedures for boiling and filtration were improved in this work. Moreover, quantitati... Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4860970 Tue, 24 May 2011 23:00:00 +0100 4860970 Effect of High Relative Humidity on Dried Plantago lanceolata L. Leaves during Long‐term Storage: Effects on Chemical Composition, Colour and Microbiological Quality http://www.medworm.com/index.php?rid=4860969&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1329 ConclusionIt was shown that exposure to water results in loss of bioactive molecules of P. lanceolata dried leaves, and that colonising fungi are the key contributors to this loss. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4860969 Tue, 24 May 2011 23:00:00 +0100 4860969 Classification of Greek Mentha pulegium L. (Pennyroyal) Samples, According to Geographical Location by Fourier Transform Infrared Spectroscopy http://www.medworm.com/index.php?rid=4860968&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1322 ConclusionThe combination of FT‐IR spectroscopy and multivariate analysis provides a rapid and ambient method to discriminate pennyroyal samples in terms of geographical origin. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4860968 Tue, 24 May 2011 23:00:00 +0100 4860968 A Comparison of Headspace Solid‐phase Microextraction and Classic Hydrodistillation for the Identification of Volatile Constituents from Thapsia spp. Provides Insights into Guaianolide Biosynthesis in Apiaceae http://www.medworm.com/index.php?rid=4860967&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1323 ConclusionThe new data reported in this study demonstrates that SPME is a valuable tool for the identification of volatile sesquiterpenes when compared with analysis of essential oils, and we postulate that guaiene is the likely precursor of guaianolide sesquiterpenes from Thapsia. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4860967 Tue, 24 May 2011 23:00:00 +0100 4860967 Rapid Identification of Calotropagenin Glycosides Using High‐Performance Liquid Chromatography Electrospray Ionisation Tandem Mass Spectrometry http://www.medworm.com/index.php?rid=4910165&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1332 ConclusionHigh performance liquid chromatography in combination with electrospray ionization tandem mass spectrometry involving metal cationisation by post column addition of alkali salts was successfully utilised for the rapid identification of calotropagenin glycosides/derivatives in Calotropis procera extract. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4910165 Sat, 30 Apr 2011 23:00:00 +0100 4910165 Simultaneous Determination of Eight Anthraquinones in Semen Cassiae by HPLC‐DAD http://www.medworm.com/index.php?rid=4860966&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1331 ConclusionThe method was validated to be simple, rapid, accurate and reliable to simultaneously determine eight major anthraquinones in SC. Meanwhile, a more specific anthraquinone, obtusifolin, was proposed to serve as a marker for SC, replacing chrysophanol. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4860966 Sat, 30 Apr 2011 23:00:00 +0100 4860966 NASCA‐HMBC, a New NMR Methodology for the Resolution of Severely Overlapping Signals: Application to the Study of Agathisflavone http://www.medworm.com/index.php?rid=4839398&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1333 ConclusionThe methodology should find many applications in dimeric and oligomeric compounds such as peptides, carbohydrates, polyketides and other cases where signal clustering is expected. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4839398 Sat, 30 Apr 2011 23:00:00 +0100 4839398 Quantification of 5′‐Deoxy‐5′‐Methylthioadenosine in Heat‐treated Natural Rubber Latex Serum http://www.medworm.com/index.php?rid=4774689&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1319 ConclusionThe devised protocol was found to be satisfyingly applicable to the routine determination of MTA in NRL serum. The effect of heat treatment on the content of MTA also indicated another possible use for NRL serum, normally discarded in vast amounts by the rubber industry, as an alternative source of MTA. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4774689 Sat, 30 Apr 2011 23:00:00 +0100 4774689 Rapid Separation and Identification of Anthocyanins from Flowers of Viola yedoensis and V. prionantha by High‐performance Liquid Chromatography–Photodiode Array Detection–Electrospray Ionisation Mass Spectrometry http://www.medworm.com/index.php?rid=4758057&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1320 ConclusionThe optimised method was successfully applied for the analysis of 14 anthocyanins from V. yedoensis and V. prionantha. The identification of anthocyanin constitutions is valuable for breeding and will open up new prospects for their medicinal application. Copyright © 2011 John Wiley & Sons, Ltd.A rapid and reliable HPLC method for the separation of anthocyanins from petals of Viola yedoensis and V. prionantha was optimised. Fourteen anthocyanins were identified by HPLC‐ESI‐MS. Anthocyanins distribution in V. yedoensis and V. prionantha exhibited remarkable differences in aglycone levels and acylation patterns. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4758057 Thu, 28 Apr 2011 03:04:45 +0100 4758057 Simultaneous Identification of Multiple Celangulins from the Root Bark of Celastrus angulatus Using High‐performance Liquid Chromatography–Diode Array Detector–Electrospray Ionisation–Tandem Mass Spectrometry http://www.medworm.com/index.php?rid=4752772&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1321 ConclusionHPLC‐DAD‐ESI‐MS/MS was demonstrated to be a powerful tool for the characterisation of minor celangulins in complex samples. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4752772 Tue, 26 Apr 2011 23:48:30 +0100 4752772 Identification of the major constituents in Xuebijing injection by HPLC‐ESI‐MS http://www.medworm.com/index.php?rid=4718877&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1284 Conclusion – The analytical method developed is highly effective for the discrimination and quality control of XBJ. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4718877 Sat, 16 Apr 2011 05:10:28 +0100 4718877 Characterisation of Galloylated Cyanogenic Glucosides and Hydrolysable Tannins from Leaves of Phyllagathis rotundifolia by LC‐ESI‐MS/MS http://www.medworm.com/index.php?rid=4713786&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1312 ConclusionThe ESI‐MSn technique facilitates identification of galloylated cyanogenic glucosides, hydrolysable tannins and ellagic acid derivatives that were isolated from the leaves of P. rotundifolia. It yields MSn spectra that are useful for identification of these compounds in complex samples and permit more complete fingerprinting of plant materials. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4713786 Fri, 15 Apr 2011 05:54:12 +0100 4713786 Profiling the chlorogenic acids of Rudbeckia hirta, Helianthus tuberosus, Carlina acaulis and Symphyotrichum novae‐angliae leaves by LC‐MSn http://www.medworm.com/index.php?rid=4713789&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1299 ConclusionIn this study, all the CGAs present in the leaves of Rudbeckia hirta, Helianthus tuberosus, Carlina acaulis and Symphyotrichum novae‐angliae were identified qualitatively to their regioisomeric level without any purification or isolation, and assignment was based on their LC‐MSn behaviour and the change in the intensity after the UV‐irradiation. A series of CGAs common to these anti‐viral herbal remedies was identified, which will in the future be selected for further detailed biological screening. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4713789 Wed, 13 Apr 2011 23:00:00 +0100 4713789 Rapid Simultaneous Determination of Major Isoflavones of Pueraria lobata and Discriminative Analysis of its Geographical Origins by Principal Component Analysis http://www.medworm.com/index.php?rid=4713788&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1308 Conclusion – The classification result can be related to herbal origins, but the classification outcome from the chromatographic fingerprinting similarity approach did not provide any geographical origin information. This shows that bioactive constituents can reflect the intrinsic quality of P. lobata more accurately. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4713788 Wed, 13 Apr 2011 23:00:00 +0100 4713788 Simultaneous Analysis of Multiple Endogenous Plant Hormones in Leaf Tissue of Oilseed Rape by Solid‐phase Extraction Coupled with High‐performance Liquid Chromatography–Electrospray Ionisation Tandem Mass Spectrometry http://www.medworm.com/index.php?rid=4713787&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1300 ABSTRACTIntroductionPlant hormones are important signalling molecules that act at lower concentrations to regulate numerous plant physiological and developmental processes. In order to study the functions of plant hormones, it is necessary to develop a high‐throughput and highly selective and sensitive method for determination of plant hormones.ObjectiveBased on SPE‐HPLC‐ESI‐MS/MS method, a highly selective and sensitive method for determination of six plant hormones in leaf tissue of oilseed rape was developed.MethodologyThe extraction was performed with C18 solid‐phase extraction cartridge and the sample was subsequently analysed by HPLC‐ESI‐MS/MS. Methanol and H2O with 0.05% formic acid was selected as the mobile phase for HPLC, using a gradient of increasing methanol cont... Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4713787 Wed, 13 Apr 2011 23:00:00 +0100 4713787 Qualitative and Quantitative Analyses of Flavonoids in Spirodela polyrrhiza by High‐performance Liquid Chromatography Coupled with Mass Spectrometry http://www.medworm.com/index.php?rid=4675789&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1303 Conclusion – Qualitative LC/MS and quantitative HPLC analytical methods were established for the comprehensive quality control of S. polyrrhiza. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4675789 Sun, 03 Apr 2011 23:00:00 +0100 4675789 Differences Among Epilobium and Hypericum Species Revealed by four IR Spectroscopy Modes: Transmission, KBr Tablet, Diffuse Reflectance and ATR http://www.medworm.com/index.php?rid=4675788&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1315 Conclusion – For best results in using infrared spectroscopy for plant species identification in quality control, the morphological properties of plant material should be taken into consideration. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4675788 Sun, 03 Apr 2011 23:00:00 +0100 4675788 One‐step Separation of Three Flavonoids from Poacynum hendersonii by High‐speed Counter‐current Chromatography http://www.medworm.com/index.php?rid=4675787&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1301 Conclusion – The optimised high‐speed counter‐current chromatography method is fast, simple and efficient for the preparative separation of flavonoids from the leave of Poacynum hendersonii. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4675787 Sun, 03 Apr 2011 23:00:00 +0100 4675787 A Novel Protocol for the Preparation of Sodium Tanshinone Sulphonates by Direct Ultrasound‐assisted Sulphonation of the Crude Extract of the Roots of Salvia miltiorrhiza Bunge and Following Counter‐current Chromatography Purification http://www.medworm.com/index.php?rid=4675786&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1298 Conclusion – The study has shown that the method combining ultrasound‐assisted sulphonation and CCC purification is an efficient way to prepare tanshinone sulphonates without pre‐purification of tanshinones from the complex extracts of Tanshen, and can be explored as a new protocol for wide natural product modification directly from a crude complex extracts without pre‐purification. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4675786 Sun, 03 Apr 2011 23:00:00 +0100 4675786 An Application of High‐speed Counter‐current Chromatography for Separation and Purification of Bungeiside‐A, Bungeiside‐B and Baishouwubenzophenone from Cynanchum bungei Decne http://www.medworm.com/index.php?rid=4675785&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1313 Conclusion – These results clearly demonstrate that HSCCC is a powerful tool for isolating and purifying components with similar structures, low concentration and high polarity from medicinal plant, such as bungeiside‐A and ‐B and baishouwubenzophenone. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4675785 Sun, 03 Apr 2011 23:00:00 +0100 4675785 Application of response surface methodology to optimise ultrasonic‐assisted extraction of four chromones in Radix Saposhnikoviae http://www.medworm.com/index.php?rid=4641407&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1282 Conclusion – Under these optimal conditions, the experimental values agreed closely with the predicted values. The analysis of variance indicated a high goodness of model fit and the success of RSM method for optimising chromones extraction in Radix Saposhnikoviae. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4641407 Fri, 25 Mar 2011 00:00:00 +0100 4641407 Simultaneous Determination of Eleven Major Flavonoids in the Pollen of Typha angustifolia by HPLC‐PDA‐MS http://www.medworm.com/index.php?rid=4630746&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1302 Conclusion – The HPLC method established is appropriate for the quality assurance of the pollen of T. angustifolia. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4630746 Thu, 24 Mar 2011 00:00:00 +0100 4630746 Authentication Analysis of Red Fruit (Pandanus Conoideus Lam) Oil Using FTIR Spectroscopy in Combination with Chemometrics http://www.medworm.com/index.php?rid=4630745&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1304 Conclusion – FTIR spectroscopy combined with PLSR and DA can be successfully used for quantification and classification of oil adulterants in RFO. The developed method is rapid and environmentally friendly and sample preparation is easy. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4630745 Thu, 24 Mar 2011 00:00:00 +0100 4630745 Retracted: Evaluation of a Modified QuEChERS Method for the Simultaneous Analysis of Zearalenone and its Metabolites α‐ and β‐Zearalenol in Medicinal Plants http://www.medworm.com/index.php?rid=4951155&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1311 (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4951155 Wed, 23 Mar 2011 00:00:00 +0100 4951155 Fast Ultrasound‐assisted Extraction of Polar (phenols) and Nonpolar (lipids) Fractions in Heterotheca inuloides Cass. http://www.medworm.com/index.php?rid=4630753&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1305 Conclusion – Ultrasound reduces the time necessary to complete the extraction 160 and 26 times, the extraction volume 2.5 and 4 times, and increases the extraction efficiency 5 and 3 times for lipidic and phenolic fractions, respectively, in comparison with conventional extraction methods. In addition, the characterization of the lipidic and phenolic fractions constitutes a first approach to the H. inuloides metabolome. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4630753 Wed, 23 Mar 2011 00:00:00 +0100 4630753 Improved Thin‐layer Chromatography Bioautographic Assay for the Detection of Actylcholinesterase Inhibitors in Plants http://www.medworm.com/index.php?rid=4630752&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1310 Conclusion – A low‐cost TLC bioautographic method was developed, which will benefit research groups pursuing natural acetylcholinesterase inhibitors. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4630752 Wed, 23 Mar 2011 00:00:00 +0100 4630752 Metabolomics Study on Quality Control and Discrimination of Three Curcuma Species based on Gas Chromatograph–Mass Spectrometry http://www.medworm.com/index.php?rid=4630751&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1296 ABSTRACTIntroduction– Metabonomic analysis is an important molecular phenotyping method for characterising plant ecotypic variations; hence, it may become a powerful tool for quality control and discrimination of traditional Chinese medicine (TCM).Objective – To discriminate and assess the quality of Curcuma phaeocaulis, C. kwangsiensis and C. wenyujin from different ecotypes. The identification of the compositions of essential oils from the three Curcuma species was included in this study.Methodology – Metabolomics analysis was carried out on all samples by gas chromatography–mass spectrometry (GC‐MS) coupled with multivariate statistical analysis. Characterisation of phytochemicals in essential oils was performed by automated matching to the MS library and comparison of their m... Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4630751 Wed, 23 Mar 2011 00:00:00 +0100 4630751 Rapid Isolation and Purification of Inotodiol and Trametenolic Acid from Inonotus obliquus by High‐speed Counter‐current Chromatography with Evaporative Light Scatting Detection http://www.medworm.com/index.php?rid=4630750&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1297 Conclusion – HSCCC‐ELSD was an efficient and rapid method for the separation and purification of inotodiol and trametenolic acid from I. obliquus. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4630750 Wed, 23 Mar 2011 00:00:00 +0100 4630750 Analysis of Eleven Phenolic Compounds Including Novel p‐Coumaroyl Derivatives in Lettuce (Lactuca sativa L.) by Ultra‐high‐performance Liquid Chromatography with Photodiode Array and Mass Spectrometry Detection http://www.medworm.com/index.php?rid=4630749&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1318 Conclusion – The main intact phenolic compounds, including four novel p‐coumaroyl esters, were simultaneously quantified in lettuce with optimal performances and a reduced total time of analysis. These findings make headway in the understanding of the lettuce phytochemicals with potential nutritional relevance. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4630749 Wed, 23 Mar 2011 00:00:00 +0100 4630749 Evaluation of a Modified QuEChERS Method for the Simultaneous Analysis of Zearalenone and its Metabolites α‐ and β‐Zearalenol in Medicinal Plants http://www.medworm.com/index.php?rid=4630748&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1311 Conclusion – The HPLC‐FD method developed for the simultaneous determination of three mycotoxins was simple, reproducible and sensitive. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4630748 Wed, 23 Mar 2011 00:00:00 +0100 4630748 Detection of High Levels of Pyrrolizidine‐N‐oxides in the Endangered Plant Cryptantha crassipes (Terlingua Creek Cat's‐eye) Using HPLC‐ESI‐MS http://www.medworm.com/index.php?rid=4630747&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1314 Conclusions – The high levels of the N‐oxides of lycopsamine and intermedine establish the genus chemotype of the endangered Cryptantha crassipes and support earlier data linking high levels of N‐oxides to dry, harsh growing conditions. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4630747 Wed, 23 Mar 2011 00:00:00 +0100 4630747 Metabolic Alterations of Withania somnifera (L.) Dunal Fruits at Different Developmental Stages by NMR Spectroscopy http://www.medworm.com/index.php?rid=4621378&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1307 Conclusion – Qualitative and quantitative analysis of metabolites in W. somnifera fruits indicated specific stages when fruits can be harvested for obtaining substantial bioactive ingredients for desirable pharmacological activity. This study potentially provides a complementary tool for quality control of herbal medicinal products when W. somnifera fruits are used. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4621378 Tue, 22 Mar 2011 00:00:00 +0100 4621378 An Enzyme‐Linked Immunosorbant Assay Using Monoclonal Antibody Against Bacoside A3 for Determination of Jujubogenin Glycosides in Bacopa monnieri (L.) Wettst http://www.medworm.com/index.php?rid=4605092&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1293 Conclusion – The study demonstrated that ELISA using anti‐bacoside A3 MAb can be used for determination of total jujubogenin glycosides in brahmi. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4605092 Wed, 16 Mar 2011 00:00:00 +0100 4605092 Preparative Isolation and Purification of Seven Isoflavones from Belamcanda chinensis http://www.medworm.com/index.php?rid=4675784&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1306 Conclusion – Two isoflavone glycosides and five isoflavone derivatives were successfully isolated and purified from the crude methanol extract of dried rhizomes of the B. chinensis by HSCCC. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4675784 Tue, 01 Mar 2011 00:00:00 +0100 4675784 Determination of carbohydrates in medicinal plants‐comparison between TLC, mf‐MELDI‐MS and GC‐MS http://www.medworm.com/index.php?rid=4641406&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1280 Conclusion – Evaluation of all three techniques employed, clearly proved the heightened performance of mf‐MELDI‐MS for the qualitative analysis of complex mixtures, as targets do not need modification and analysis requires only a few minutes. In addition, GC‐MS is suitable for quantitative analysis. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4641406 Tue, 01 Mar 2011 00:00:00 +0100 4641406 Extraction of Antioxidants from Spruce (Picea abies) Bark using Eco‐friendly Solvents http://www.medworm.com/index.php?rid=4630744&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1316 Conclusion – The study has shown that PFE is a fast and environmentally sustainable technique, using water and ethanol as solvent for the extraction of antioxidants from spruce bark. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4630744 Tue, 01 Mar 2011 00:00:00 +0100 4630744 Quality Evaluation of Potentilla discolor by High‐performance Liquid Chromatography Coupled with Diode Array Detection and Electrospray Ionisation Tandem Mass Spectrometry http://www.medworm.com/index.php?rid=4621377&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1317 Conclusion – This developed method was validated as simple, precise and accurate, and could be used for effectively and comprehensibly evaluating the quality of P. discolor. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4621377 Tue, 01 Mar 2011 00:00:00 +0100 4621377 Identification of 2″‐Galloylated Flavonol 3‐O‐Glycosides Accumulating in Developing Leaves of Persimmon http://www.medworm.com/index.php?rid=4605091&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1295 Conclusion – This study showed that four 2″‐galloylated flavonol glycosides had accumulated in developing leaves of persimmon by the end of May through a rapid 2″‐galloylation of the corresponding nongalloylated flavonol glycosides. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4605091 Tue, 01 Mar 2011 00:00:00 +0100 4605091 The Optimisation of Analytical Parameters for Routine Profiling of Antioxidants in Complex Mixtures by HPLC Coupled Post‐column Derivatisation http://www.medworm.com/index.php?rid=4549199&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1294 ABSTRACTIntroduction – The wide application of natural and artificial antioxidants in the food, cosmetic and pharmaceutical industries as well as the recognition of the importance of food antioxidants for supporting human health have created a demand for reliable and industrially applicable methods of determining antioxidative activity. This requirement can be fulfilled with the recently proposed HPLC‐post‐column derivatisation approach, enabling rapid measurements of antioxidative potential along with profiling antioxidants in complex mixtures.Objective – To employ the commercially available post‐column derivatisation device for the on‐line detection of antioxidants and to optimise analytical parameters enabling its application for routine profiling of antioxidants in complex ... Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4549199 Tue, 01 Mar 2011 00:00:00 +0100 4549199 Quantitative determination of superoxide in plant leaves using a modified NBT staining method http://www.medworm.com/index.php?rid=4527414&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1275 Conclusions – Chloroform allowed a selective formazan extraction and removal of potential endogenous, exogenous or procedural artefacts that may interfere with the quantitative determination. This protocol can be used to quantify the superoxide produced in plant tissues using any traditional qualitative NBT histochemical staining method. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4527414 Mon, 28 Feb 2011 06:33:49 +0100 4527414 Analytical methods for heavy metals in herbal medicines http://www.medworm.com/index.php?rid=4506549&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1287 AbstractIntroduction – It is estimated that about 70–80% of the world's population relies on non‐conventional medicine, mainly of herbal origin. However, owing to the nature and sources of herbal medicines, they are sometimes contaminated with toxic heavy metals such as lead, arsenic, mercury and cadmium, which impose serious health risks to consumers. It is critical to analyse source materials for heavy metals in order to ensure that their concentrations meet the related standards or regulations limiting their concentrations in herbal medicines. In this review, different analytical methods for analysis of heavy metals in herbal medicines are discussed.Objective – To provide a comprehensive review of the current state of the art in analytical methods used to detect heavy metals in ... Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4506549 Tue, 22 Feb 2011 23:52:13 +0100 4506549 Total extract of Beta Vulgaris var. Cicla seeds versus its purified phenolic components: antioxidant activities and antiproliferative effects against colon cancer cells http://www.medworm.com/index.php?rid=4498041&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1276 Conclusion – Xylosylvitexin is the main and more efficient chemopreventive compound in BV seeds, but the natural cocktail of molecules, represented by P4 fraction, showed a better compromise between the antiproliferative activity on RKO cells and the enhancement of HF proliferation. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4498041 Sun, 20 Feb 2011 00:32:56 +0100 4498041 A combination of ultrasonic‐assisted extraction with RRLC‐QQQ method for the determination of artemisinin in the Chinese herb Artemisia annua L. http://www.medworm.com/index.php?rid=4498046&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1277 Conclusion – The developed RRLC‐QQQ assay is an efficient method for separation and determination of artemisinin from the plant samples of Artemisia annua L. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4498046 Sat, 19 Feb 2011 00:00:00 +0100 4498046 A preparative method for isolation of fucoxanthin from Eisenia bicyclis by centrifugal partition chromatography http://www.medworm.com/index.php?rid=4498045&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1283 Conclusion – High‐purity fucoxanthin was successfully isolated from fresh E. bicyclis, suggesting further potential applications in the industrial use of this valuable carotenoid. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4498045 Sat, 19 Feb 2011 00:00:00 +0100 4498045 Rapid screening of lignans from Phyllanthus myrtifolius and stilbenoids from Syagrus romanzoffiana by HPLC‐SPE‐NMR http://www.medworm.com/index.php?rid=4498044&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1286 Conclusion – HPLC‐SPE‐NMR associated with HR‐ESI/MS, which consumed only analytical amounts of partially purified mixtures, was demonstrated to be a good tool for rapid screening of both known and new natural products. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4498044 Sat, 19 Feb 2011 00:00:00 +0100 4498044 Validated high‐performance thin‐layer chromatographic method for the quantification of thymoquinone in Nigella Sativa extracts and formulations http://www.medworm.com/index.php?rid=4498043&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1289 Conclusion – The HPTLC method developed was found to be relatively simple, rapid and accurate for the routine analysis of TQ in extracts, marketed oils, polyherbal and in‐house formulations. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4498043 Sat, 19 Feb 2011 00:00:00 +0100 4498043 Phytochemical fingerprinting to thwart black cohosh adulteration: a 15 Actaea species analysis http://www.medworm.com/index.php?rid=4498042&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1285 Conclusions – Phytochemical fingerprinting is a practical, reliable method for authenticating black cohosh and distinguishing it from other species of Actaea increasingly found as adulterants in commercially available black cohosh products. This should facilitate the continued development of high‐quality, unadulterated black cohosh products. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4498042 Sat, 19 Feb 2011 00:00:00 +0100 4498042 A systematic study of the polyphenolic composition of aqueous extracts deriving from several Cistus genus species: evolutionary relationship http://www.medworm.com/index.php?rid=4393480&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1281 Conclusions – Chemical composition of the leaves' aqueous extracts from plants belonging to the Cistus genus is strongly related to their subgenus, in agreement to previous taxonomical and phylogenetic divisions. In contrast, soil and climate are less influencing factors. Leucocistus and Halimioides subgenus showed a higher content in ellagitannins. However, Cistus subgenus had higher flavonoid content. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4393480 Mon, 24 Jan 2011 00:00:00 +0100 4393480 Phytochemical fingerprinting of vegetable Brassica oleracea and Brassica napus by simultaneous identification of glucosinolates and phenolics http://www.medworm.com/index.php?rid=4393479&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1259 Conclusions – This study has provided a deeper and comprehensive identification of health‐promoting compounds in kale, cabbage and leaf rape, thus showing that they are a good source of glucosinolates and phenolic antioxidants. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4393479 Mon, 24 Jan 2011 00:00:00 +0100 4393479 Analysis of antioxidant metabolites by solvent extraction from sclerotia of Inonotus obliquus (Chaga) http://www.medworm.com/index.php?rid=4393478&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1225 Conclusion – Polyphenols in Chaga are the principles for quenching free radicals while polysaccharides and a few LT compounds contribute partially in scavenging DPPH and hydroxyl radicals, respectively. NMR‐based metabolomic analysis is a useful method by which to correlate 1H‐NMR spectra of Chaga extracts with their antioxidant activities, and this allows the prediction of potentials for scavenging free radicals by 1H‐NMR spectroscopy. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4393478 Mon, 24 Jan 2011 00:00:00 +0100 4393478 Isolation of four high‐purity dammarane saponins from extract of Panax notoginseng by centrifugal partition chromatography coupled with evaporative light scattering detection in one operation http://www.medworm.com/index.php?rid=4393477&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1274 Conclusion – CPC‐ELSD was proved to be a very fast and efficient tool for separation of high‐purity dammarane saponins. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4393477 Mon, 24 Jan 2011 00:00:00 +0100 4393477 Laser desorption ionisation–time of flight mass spectrometry of the tolyporphins, bioactive metabolites from the cyanobacterium Tolypothrix nodosa http://www.medworm.com/index.php?rid=4463914&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1278 Conclusions – Tolyporphins yield LDI‐TOF mass spectra somewhat analogous to those of porphyrins; furthermore, the substituents fragment in a characteristic manner permitting partial characterisation of the new analogues tolyporphins L and M by comparison of their LDI‐TOF mass spectra with those of the known analogues. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4463914 Sat, 01 Jan 2011 00:00:00 +0100 4463914 Identification of chemical constituents in extracts and rat plasma from Fructus Aurantii by UPLC‐PDA‐Q‐TOF/MS http://www.medworm.com/index.php?rid=4393476&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1252 Conclusion – The approach developed has proved useful in the study of the active constituents in traditional Chinese medicines. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4393476 Sat, 01 Jan 2011 00:00:00 +0100 4393476 Studies on the stability of salvianolic acid B as potential drug material http://www.medworm.com/index.php?rid=4336900&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1291 Conclusion – The results demonstrate that the potential drug material Sal B could be used in a solid formulation, but is not suitable for use as a liquid formulation. Copyright © 2011 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4336900 Sat, 01 Jan 2011 00:00:00 +0100 4336900 Improved rapid detection of trypsin isoinhibitors using non‐denaturing polyacrylamide gels with immobilised azoalbumin http://www.medworm.com/index.php?rid=4298240&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1290 Conclusion – Immobilised azoalbumin in polyacrylamide gels, run under non‐denaturing electrophoresis conditions, can be used to assist rapid evaluation of trypsin isoinhibitors in numerous crude plant extracts. Copyright © 2010 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4298240 Thu, 30 Dec 2010 07:59:29 +0100 4298240 Development and application of a rapid and efficient CZE method coupled with correction factors for determination of monosaccharide composition of acidic hetero‐polysaccharides from Ephedra sinica http://www.medworm.com/index.php?rid=4298243&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1235 Conclusion – The results provided scientific evidence for the further study of the structure and bioactivity of complex acidic E. sinica polysaccharides. Copyright © 2010 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4298243 Thu, 30 Dec 2010 00:00:00 +0100 4298243 Electrochemical detection of honokiol and magnolol in traditional Chinese medicines using acetylene black nanoparticle‐modified Electrode http://www.medworm.com/index.php?rid=4298242&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1279 Conclusion – The new method was successfully used to determine honokiol and magnolol in a traditional Chinese medicine called Ageratum liquid. Copyright © 2010 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4298242 Thu, 30 Dec 2010 00:00:00 +0100 4298242 The quantification of ellagic acid in the crude extract of Phyllanthus amarus Schum. & Thonn. (Euphorbiaceae) http://www.medworm.com/index.php?rid=4298241&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1288 Conclusion – Based on the obtained results, it can be concluded that the newly developed method is suitable for its purpose, namely the determination of ellagic acid in the crude extract of P. amarus. Copyright © 2010 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4298241 Thu, 30 Dec 2010 00:00:00 +0100 4298241 Application of NMR‐based metabolomics to the investigation of salt stress in maize (Zea mays) http://www.medworm.com/index.php?rid=4298244&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1268 Conclusions – The metabolic effect of high salinity was predominantly consistent with osmotic stress as reported for other plant species and was found to be stronger in the shoots than the roots. Using multivariate data analysis it is possible to investigate the effects of more than one environmental stressor simultaneously. Copyright © 2010 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4298244 Wed, 29 Dec 2010 00:00:00 +0100 4298244 Simultaneous determination of naphthalene and anthraquinone derivatives in Rumex nepalensis Spreng. Roots by HPLC: comparison of different extraction methods and validation http://www.medworm.com/index.php?rid=4132271&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1261 Conclusion – Reflux and ultrasonication were found to be the best suited methods for the extraction of glycosides and aglycones, respectively. The developed and validated HPLC method is simple, precise and accurate; and can hence be recommended as the method of choice for the analysis of anthraquinones and naphthalenes in R. nepalensis and other Rumex species for both quality control as well as routine analytical purposes. Copyright © 2010 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4132271 Tue, 02 Nov 2010 00:00:00 +0100 4132271 Microwave‐assisted acid extraction methodology for trace elements determination in mastic gum of Pistacia lentiscus using inductively coupled plasma atomic emission spectrometry http://www.medworm.com/index.php?rid=4132270&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1247 Conclusions The performance characteristics of the developed method were evaluated against certified reference material and the method was proved reliable and applicable to the analysis of mastic gum and possibly to similar resinous matrices. Copyright © 2010 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4132270 Tue, 02 Nov 2010 00:00:00 +0100 4132270 Optimization of ultrasonic‐stimulated solvent extraction of sinigrin from Indian mustard seed (Brassica Juncea L.) using response surface methodology http://www.medworm.com/index.php?rid=4132269&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1266 Conclusion – The ultrasonic‐stimulated solvent extraction was suggested to be a promising method to improve the productivity of sinigrin. And the results demonstrated that sinigrin productivity may be related to pectinous materials existed in the seeds. Copyright © 2010 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4132269 Tue, 02 Nov 2010 00:00:00 +0100 4132269 Simultaneous determination of five characteristic stilbene glycosides in root bark of Morus albus L. (Cortex Mori) using high‐performance liquid chromatography http://www.medworm.com/index.php?rid=4132268&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1270 Conclusion – The validated method was successfully applied to quantify the five investigated components, including a pair of cis‐trans‐isomers 1 and 2 and a pair of isomers 4 and 5 in 34 samples of Cortex Mori from different sources. Copyright © 2010 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4132268 Tue, 02 Nov 2010 00:00:00 +0100 4132268 GC‐MS Analysis of Headspace and Liquid Extracts for Metabolomic Differentiation of Citrus Huanglongbing and Zinc Deficiency in Leaves of ‘Valencia’ Sweet Orange from Commercial Groves http://www.medworm.com/index.php?rid=4132267&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1271 Conclusion – Results suggest the potential of using identified HLB biomarkers for rapid differentiation of HLB from zinc deficiency. Copyright © 2010 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4132267 Tue, 02 Nov 2010 00:00:00 +0100 4132267 Chemometric Evaluation of the Anti‐cancer Pro‐drug Podophyllotoxin and Potential Therapeutic Analogues in Juniperus and Podophyllum Species http://www.medworm.com/index.php?rid=4132266&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1258 Conclusion – Such holistic studies of plants and their therapeutic metabolites ought to assist in selecting plants, geographical areas and environmental conditions for bioprospecting and global‐scale phytochemical and phylogenetic diversity studies in the future. Copyright © 2010 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4132266 Tue, 02 Nov 2010 00:00:00 +0100 4132266 Structure Characterization and Identification Steroidal Saponins from Ophiopogon Japonicus Ker‐Gawler (Liliaceae) by High‐Performance Liquid Chromatography with Ion Trap Mass Spectrometry http://www.medworm.com/index.php?rid=4132265&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1263 Conclusion – This work has shown that HPLC‐ESI‐MSn may be used as an effective and rapid method for the characterization and identification of steroidal saponins from O. japonicus. Copyright © 2010 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4132265 Tue, 02 Nov 2010 00:00:00 +0100 4132265 Qualitative Analysis and Simultaneous Quantification of Phenolic Compounds in the Aerial Parts of Salvia miltiorrhiza by HPLC‐DAD and ESI/MSn http://www.medworm.com/index.php?rid=4132264&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1272 Conclusion – The developed methods have been proved to be effective for the identification and quantification of phenolic acids in S. miltiorrhiza. The results obtained suggest that the aerial parts of the plant could be used as an alternative source of sage phenolics. Copyright © 2010 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4132264 Tue, 02 Nov 2010 00:00:00 +0100 4132264 Determination and pharmacokinetic study of chiisanogenin in rat plasma by ultra performance liquid chromatography‐tandem mass spectrometry http://www.medworm.com/index.php?rid=4132263&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1269 Conclusion – The method was successfully applied to the pharmacokinetic study of chiisanogenin in rat after oral administration of chiisanogenin and the extract of Acanthopanax sessiliflorus fruits. Other constituents in the extract affected the pharmacokinetic behavior of chiisanogenin. Copyright © 2010 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4132263 Mon, 01 Nov 2010 00:00:00 +0100 4132263 Current Awareness in Phytochemical Analysis http://www.medworm.com/index.php?rid=4116756&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1164 Abstract (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4116756 Sat, 30 Oct 2010 00:21:13 +0100 4116756 Announcement http://www.medworm.com/index.php?rid=4116755&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1292 (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4116755 Sat, 30 Oct 2010 00:21:13 +0100 4116755 Quantitative analysis of major dibenzocyclooctane lignans in schisandrae fructus by online TLC‐DART‐MS http://www.medworm.com/index.php?rid=4104555&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1273 Abstract (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4104555 Tue, 31 Aug 2010 23:00:00 +0100 4104555 Current Awareness in Phytochemical Analysis http://www.medworm.com/index.php?rid=4039720&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1163 Abstract (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=4039720 Tue, 31 Aug 2010 23:00:00 +0100 4039720 Synthesis and Characterisation of [agr]-Glycosyloxyamides Derived from Cyanogenic Glycosides http://www.medworm.com/index.php?rid=3826416&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1237 Conclusion - Thus, [agr]-glycosyloxyamides can be obtained in sufficient amounts and purity to serve as references for further studies on the catabolism of cyanogenic glycosides and the detoxification of cyanogenic foodplants using the new aspect of nitrile hydrolysis with (endogenous) hydrogen peroxide. Copyright © 2010 JohnWiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=3826416 Thu, 05 Aug 2010 23:00:00 +0100 3826416 Determination of S-Adenosyl-l-methionine in Fruits by Capillary Electrophoresis http://www.medworm.com/index.php?rid=3826417&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1241 Conclusion - Fast measurements of SAM in fruits and juices are favoured by capillary electrophoresis in a 200 : 50 mm glycine : phosphate (pH 2.5) buffer system. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=3826417 Wed, 04 Aug 2010 23:00:00 +0100 3826417 Assessment of the influence of different sample processing and cold storage duration on plant free proline content analyses http://www.medworm.com/index.php?rid=3726304&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1233 Conclusion - The observed changes in proline content in plant tissue samples stored at -20°C indicate the likelihood of the over-estimation of the proline content if the proline analyses are delayed. Plant sample processing and cold storage duration seem to have an important influence on results of proline analyses. Therefore it is recommended that samples should be ground fresh and analysed immediately. Copyright © 2010 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=3726304 Sun, 04 Jul 2010 23:00:00 +0100 3726304 Discrimination of geographical origin and adulteration of radix astragali using fourier transform infrared spectroscopy and chemometric methods http://www.medworm.com/index.php?rid=3721358&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1242 Conclusion - FT-IR spectroscopy combined with chemometric method was developed and demonstrated to be a useful tool to discriminate geographical origin and adulteration of Radix Astragali. Copyright © 2010 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=3721358 Fri, 02 Jul 2010 23:00:00 +0100 3721358 Comparing the composition and bioactivity of Crataegus Monogyna flowers and fruits used in folk medicine http://www.medworm.com/index.php?rid=3975902&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1267 Abstract (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=3975902 Wed, 30 Jun 2010 23:00:00 +0100 3975902 Validated TLC method for simultaneous quantitation of kutkoside and picroside‐I from Kutki extract http://www.medworm.com/index.php?rid=3937991&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1248 Abstract (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=3937991 Wed, 30 Jun 2010 23:00:00 +0100 3937991 Determination of hydroxylated fatty acids from the biopolymer of tomato cutin and their fate during incubation in soil http://www.medworm.com/index.php?rid=3902348&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1238 (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=3902348 Wed, 30 Jun 2010 23:00:00 +0100 3902348 Determination of S‐Adenosyl‐l‐methionine in Fruits by Capillary Electrophoresis http://www.medworm.com/index.php?rid=3861310&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1241 (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=3861310 Wed, 30 Jun 2010 23:00:00 +0100 3861310 Current Awareness in Phytochemical Analysis http://www.medworm.com/index.php?rid=3841475&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1162 Abstract (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=3841475 Wed, 30 Jun 2010 23:00:00 +0100 3841475 Analysis of sesterterpenoids from Aspergillus terreus using ESI‐QTOF and ESI‐IT http://www.medworm.com/index.php?rid=3841474&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1209 Abstract (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=3841474 Wed, 30 Jun 2010 23:00:00 +0100 3841474 Chemical characterization of Azadirachta indica grafted on Melia azedarach and analyses of azadirachtin by HPLC‐MS‐MS (SRM) and meliatoxins by MALDI‐MS http://www.medworm.com/index.php?rid=3841473&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1208 Abstract (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=3841473 Wed, 30 Jun 2010 23:00:00 +0100 3841473 Direct and rapid determination of ultratrace heavy metals in solid plant materials by ET‐AAS ultrasonic‐assisted slurry sampling http://www.medworm.com/index.php?rid=3841472&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1204 Abstract (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=3841472 Wed, 30 Jun 2010 23:00:00 +0100 3841472 A RP‐HPLC‐DAD‐APCI/MSD method for the characterisation of medicinal Ericaceae used by the Eeyou Istchee Cree First Nations http://www.medworm.com/index.php?rid=3841471&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1203 Abstract (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=3841471 Wed, 30 Jun 2010 23:00:00 +0100 3841471 Rapid identification of furanocoumarins in Angelica dahurica using the Online LC‐MMR‐MS and their nitric oxide inhibitory activity in RAW 264.7 cells http://www.medworm.com/index.php?rid=3841470&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1202 Abstract (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=3841470 Wed, 30 Jun 2010 23:00:00 +0100 3841470 Quality control of Pulsatilla koreana based on the simultaneous determination of triterpenoidal saponins by HPLC‐ELSD and principal component analysis http://www.medworm.com/index.php?rid=3841469&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1201 Abstract (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=3841469 Wed, 30 Jun 2010 23:00:00 +0100 3841469 High‐performance liquid chromatography with diode array detection coupled to electrospray time‐of‐flight and ion‐trap tandem mass spectrometry to identify phenolic compounds from a Cistus ladanifer aqueous extract http://www.medworm.com/index.php?rid=3841468&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1200 Abstract (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=3841468 Wed, 30 Jun 2010 23:00:00 +0100 3841468 Volatile compounds with characteristic odour in moso-bamboo stems (Phyllostachys pubescens Mazel ex Houz. De ehaie) http://www.medworm.com/index.php?rid=3694708&cid=s_33658_60_f&fid=33658&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fpca.1224 Conclusion - The results of the sniffing test, RFA and FD factor indicated that (E)-2-nonenal and eugenol were estimated to have a bamboo-like aroma, and aldehyde compounds, such as a phenylacetaldehyde (floral) and C9-C10 unsaturated aldehydes, make the aroma of bamboo. Copyright © 2010 John Wiley & Sons, Ltd. (Source: Phytochemical Analysis) Phytochemical Analysis journals http://www.medworm.com/rss/comments.php?id=3694708 Thu, 24 Jun 2010 23:00:00 +0100 3694708