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- W2953103639 abstract "Lactic acid bacteria (LAB) are known to have a significant ability to colonize the human intestinal tract and adhere to the surface of intestinal epithelial cells. Among the various lactic acid bacteria, exopolysaccharide (EPS) producing strains are known to provide a variety of health benefits for their hosts (e.g. anti-inflammatory, antioxidant, antitumor and stress tolerant effects). Recently, EPSs and EPS-producing lactic acid cultures have gained interest within the food industry and are playing important roles as biothickeners and texturizing agents due to their hydrocolloidal nature. In this study, 156 lactic acid bacterial strains isolated from fecal samples of healthy young children were screened and evaluated for active EPS-production capability.Among the various human origin lactic acid flora isolated, Weissella confusa VP30 showed the highest EPS productivity and its EPS producing properties were characterized under various cultural conditions in this research. To document the safety of W. confusa VP30, antibiotic resistance, hemolytic, and ammonia production properties were evaluated in addition. No significant negative results were observed. The maximum EPS production by W. confusa VP30 was 59.99 ± 0.91 g/l after 48 h of cultivation in media containing 10% sucrose, far exceeding EPS production by other bacterial strains reported elsewhere. Based on gel permeation chromatography (GPC), the molecular weight of EPS produced by W. confusa VP30 was 3.8 × 106 Da. Structural analysis of the released EPS fraction by 13C and 1H nuclear magnetic resonance (NMR) spectroscopy revealed that W. confusa VP30 can produce dextran with glucose units linked with 96.5% α (1 → 6) glycosidic bonds and 3.5% α (1 → 3) branches.The high EPS production capability and safety of W. confusa VP30 justify food industry consideration of this cell strain for further evaluation and potential industrial use." @default.
- W2953103639 created "2019-06-27" @default.
- W2953103639 creator A5002371442 @default.
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- W2953103639 date "2019-06-13" @default.
- W2953103639 modified "2023-10-15" @default.
- W2953103639 title "Isolation and characterization of high exopolysaccharide-producing Weissella confusa VP30 from young children’s feces" @default.
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- W2953103639 doi "https://doi.org/10.1186/s12934-019-1158-1" @default.
- W2953103639 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6567487" @default.
- W2953103639 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/31196110" @default.
- W2953103639 hasPublicationYear "2019" @default.
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