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Factors Affecting on the Production of Exopolysaccharides from Zoogloea ramigera l15SLR.  

소한섭 (계명대학교 식품가공학과)
김찬식 (제주대학교 원예생명과학부)
이삼빈 (계명대학교 식품가공학과)
Publication Information
Microbiology and Biotechnology Letters / v.30, no.3, 2002 , pp. 264-269 More about this Journal
Abstract
The production of exopolysaccharide from Zoogloea ramigera 115SLR in batch culture was affected by carbon sources, rifampicin concentration, inoculum size and cell density of starter culture. The increase of organic nitrogen concentration and cell density in defined medium by adding starter culture resulted in higher production of exopolysaccharide (EPS) within 2 days. Glucose and lactose as carbon sources showed EPS production of 10.7 gk and 10.5 ga, respectively. Higher EPS production was obtained with 2.5% (w/v) glucose. White sugar, brown sugar and galactose produced less than 10 gt of EPS. The optical density of starter culture affected on EPS yield, producing over 10 gt of EPS in the range of 1.0-1.7. In the presence of rifsmpicin, Z. ramigera 115SLR produced EPS of 12.9 gt. Molecular weight of EPS produced with/without rifampicin was determined with 1.367$\times$106 and 1.711$\times$106 g/mol using HPSEC-MALLS-RI, respectively.
Keywords
Zoogloea ramigera; exopolysaccharide production; batch culture;
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Times Cited By KSCI : 7  (Citation Analysis)
Times Cited By SCOPUS : 1
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