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Total 6194 results found since Jan 2013.

Comparative Studies of Essential Oil Composition and Biological Activities of Callistemon citrinus from western Himalaya
Chem Biodivers. 2023 Sep 20:e202301129. doi: 10.1002/cbdv.202301129. Online ahead of print.ABSTRACTThis work described a comprehensive study to estimate chemical constituents of essential oils (EOs) extracted from different parts of the Callistemon citrinus viz: fruits, leaves and aerial part. The EOs were characterized using physicochemical parameters, and GC-FID/MS. It was observed that among different parts, aerial part has the highest oil yield (0.90%) followed by leaves and fruits. Further, seventeen compounds were characterized, and represented total amount (97.2-99.5%) with domination of monoterpenes (12.5-34.6%) an...
Source: Chemistry and Biodiversity - September 20, 2023 Category: Biochemistry Authors: Sachin Vashisath Smita Kapoor Vandana Kumari Shabana Butt Dinesh Kumar Source Type: research

Oil structuring from porous starch to powdered oil: Role of multi-scale structure in the oil adsorption and distribution
This study compared the role of multi-scale structure of porous starch (PS) prepared by normal and waxy maize starch in the oil adsorption. Waxy maize porous starch exhibited higher oil adsorption capacity (32.43 %-98.71 %) and more oil distributed on the surface of granules than normal maize porous starch, resulting from the more pores, larger specific surface area (1.01-1.53 m2/g), and pore size (8.45-9.32 nm). The enzymolysis time of native starch dominated oil distribution, leading to different granule adhesion and aggregation state. Pearson correlation analysis further showed oil adsorption capacity was negatively cor...
Source: International Journal of Biological Macromolecules - September 20, 2023 Category: Biochemistry Authors: Miao Shao Songnan Li Sixin Huang Shahid Ahmed Junejo Yi Jiang Bin Zhang Qiang Huang Source Type: research

Xanthan and gum acacia modified olive oil based nanoemulsion as a controlled delivery vehicle for topical formulations
In this study, olive oil nanoemulsion modified with xanthan gum and gum acacia was explored as a potential controlled topical delivery vehicle. Oil-in-water nanoemulsion formulated with optimized composition of olive oil, tween 80, and water was used as the drug carrier and further modified with gum. Effect of gum on nanoemulsion different physiochemical characteristics, stability, rheology, drug release and encapsulation efficiency were investigated. Results showed that developed nanoemulsion behaved as low viscosity Newtonian fluid and released 100 % drug within 6 h. Modification with xanthan and gum acacia had significa...
Source: International Journal of Biological Macromolecules - September 20, 2023 Category: Biochemistry Authors: Khadijatul Kobra Siew Yee Wong Mohammad A Jafar Mazumder Xu Li M Tarik Arafat Source Type: research

Continuous-Flow Microreactor Accelerates Molecular Collisions for Lignin Depolymerization to Phenolic Monomers and Oligomers
In this study, we developed a continuous-flow microreactor for depolymerization of lignin into monomeric and oligomeric compounds. The yields of monomers and oligomers can be adjusted by varying the temperature, pressure, residence time, NaOH dosage, and solvent. Under optimized conditions, the lignin conversion rate was 77.73 wt %, and the monomer yield was 13.26 wt %, with 77.81% being phenolic compounds. In addition, comparative characterizations on the raw lignin and products demonstrated that the oil products were mainly composed of phenolic tetramers and trimers, and the effective cleavage of the β-O-4 linkage of S-...
Source: Biomacromolecules - September 18, 2023 Category: Biochemistry Authors: Pengfei Lian Shuangjie Liu Zihao Ma Yongying Wang Ying Han Guangwei Sun Xing Wang Source Type: research

Structural variations of lignin and lignin-carbohydrate complexes from the fruit shells of Camellia oleifera during ripening
Int J Biol Macromol. 2023 Sep 16:126946. doi: 10.1016/j.ijbiomac.2023.126946. Online ahead of print.ABSTRACTCamellia oleifera fruit shell (CFS), a waste lignocellulosic biomass resulting from Camellia oleifera oil production industry, is abundantly available in Southern China. Herein, to understand the structural variations of CFS lignins and lignin-carbohydrate complexes (LCC) during ripening, the native lignin and LCC fractions from CFS (harvested every seven days from October 1 to 30, 2022) were isolated and characterized systematically. The molecular weights of both MWL and DEL fractions steadily increased during ripen...
Source: International Journal of Biological Macromolecules - September 18, 2023 Category: Biochemistry Authors: Xichuang Cheng Ruxia Ning Pengfei Li Fenglun Zhang Kun Wang Jianxin Jiang Source Type: research

Fabrication and characterization of new levan@CBD biocomposite sponges as potential materials in natural, non-toxic wound dressing applications
In this study, porous bacterial levan-based sponges containing cannabis oil (Lev@CBDs) were prepared and fully characterized. The sponges exhibited a suitable swelling ratio, proper water vapor transmission rate, sufficient thermal stability, desired mechanical properties, and good antioxidant and anti-inflammatory properties. The obtained Lev@CBD materials were evaluated in terms of their interaction with proteins, human serum albumin and fibrinogen, of which fibrinogen revealed the highest binding effect. Moreover, the obtained biomaterials exhibited antibacterial activity against Staphylococcus aureus and Pseudomonas ae...
Source: International Journal of Biological Macromolecules - September 18, 2023 Category: Biochemistry Authors: Dorota Chelminiak-Dudkiewicz Miloslav Machacek Jolanta Dlugaszewska Magdalena Wujak Aleksander Smolarkiewicz-Wyczachowski Szymon Bocian Kinga Mylkie T Goslinski Michal P Marszall Marta Ziegler-Borowska Source Type: research

Superwettable cellulose acetate-based nanofiber membrane with spider-web structure for highly efficient oily water purification
This study provides a novel strategy for the construction of the high-performance oil/water separation membrane.PMID:37717870 | DOI:10.1016/j.ijbiomac.2023.126865
Source: International Journal of Biological Macromolecules - September 17, 2023 Category: Biochemistry Authors: Doudou Ning Zhaoqing Lu Cuiyu Tian Ning Yan Fan Xie Nan Li Li Hua Source Type: research

Anti-oxidant, diabetic and inflammatory activities of alpinia calcarata roscoe extract
CONCLUSION: Our findings demonstrated that leaf oil was slightly more promising results than rhizome oil of AC extract,which was ultimately showed medicinal potential of secondary metabolites with antioxidant, diabetic/inflammatory activities. Further, Eoils of AC have a wide range of pharmacological potential and promising anti-diabetic effects.PMID:37715949 | DOI:10.1002/cbdv.202300970
Source: Chemistry and Biodiversity - September 16, 2023 Category: Biochemistry Authors: Naorem Manglembi Devi Sankaranarayanan Nagarajan Chingakham Brajakishor Singh Mohammad Mujahid Ali Khan Anish Khan Nisha Khan Mohamed H Mahmoud Hassan Fouad AbuZar Ansari Source Type: research

Essential Oils from Different Parts of Magnolia laevifolia: Chemical Constituents and Insecticidal Activities against Liposcelis bostrychophila
This study extracted EOs from leaves, flowers, carpels and seeds of M. laevifolia. The common and major compound of EOs was isocapnell-9-en-8-one, which was present at 17.7 to 91.6% in these four parts We found no regular pattern in the composition of EO in terms of parts and collection time according to principal component analysis. The contact and repellent activities of EOs against the booklouse were then conducted. Leaves and flowers' EOs collected in the flowering stage had the best contact toxicity. The percent repellency values of the EOs from different parts of M. laevifolia reached above 80% after 2 and 4 h exposu...
Source: Chemistry and Biodiversity - September 16, 2023 Category: Biochemistry Authors: Jia-Wei Zhang Yi-Xi Feng Yu Zheng Cheng-Fang Wang Shu-Shan Du Source Type: research

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