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- W2621454037 abstract "Various microorganisms isolated from polluted environments, such as Pseudomonas sp. and Micrococcus sp. can synthesize exopolysaccharides (EPSs) which are natural, non-toxic and biodegradable polymers. EPSs play a key role in protection of microbial cells under various external influences. For humans, these substances have potential use in many industries. EPSs can be applied as a flavor or a fragrance carrier, an emulsifier, a stabilizer, a prebiotic, an antioxidant or an antitumor agent. In this study, we characterized an environmental microorganism that produces EPS, optimized EPS production by this strain and characterized the EPS produced. Isolate CH-KOV3 was identified as Brachybacterium paraconglomeratum. The sucrose level in the growth medium greatly influenced EPS production, and the highest yield was when the microorganism was incubated in media with 500 g/L of sucrose. The optimal temperature and pH were 28 °C and 7.0, respectively. The nuclear magnetic resonance (NMR) results and GC–MS analysis confirmed that the residues were d-fructofuranosyl residues with β-configuration, where fructose units are linked by β-2,6-glycosidic bonds, with β-2,1-linked branches. All these data indicate that the investigated EPS is a levan-type polysaccharide. Thus, it was concluded that Brachybacterium sp. CH-KOV3 could constitute a new source for production of the bioactive polysaccharide, levan." @default.
- W2621454037 created "2017-06-15" @default.
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- W2621454037 date "2017-11-01" @default.
- W2621454037 modified "2023-09-27" @default.
- W2621454037 title "Brachybacterium sp. CH-KOV3 isolated from an oil-polluted environment–a new producer of levan" @default.
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- W2621454037 doi "https://doi.org/10.1016/j.ijbiomac.2017.06.034" @default.
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