期刊
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY
卷 76, 期 5, 页码 912-917出版社
TAYLOR & FRANCIS LTD
DOI: 10.1271/bbb.110905
关键词
solid state fermentation; exopolysaccharide (EPS); Lactobacillus confusus; sodium chloride (NaCl); high salinity stress
类别
资金
- Office of Higher Education Commission, the Ministry of Education
- Faculty of Agro-Industry, Chiang Mai University, Thailand
It is believed that high concentrations of sodium chloride (NaCl) suppress the biosynthesis of exopolysaccharide (EPS) in lactic acid bacteria (LAB). Nevertheless, overproduction of EPSs due to high salinity stress in solid state fermentation performed on an agar surface was demonstrated in this study using a response surface methodology via a central composite design (CCD). Under optimized conditions with NaCl 4.97% and sucrose 136.5 g/L at 40.79 h of incubation, the EPS yield was 259% (86.36 g/L of EPS), higher than the maximum yield produced with the modified MRS medium containing only 120 g/L of sucrose without NaCl (33.4 g/L of EPS). Biosynthesis of EPS by Lactobacillus confusus TISTR 1498 was independent of biomass production. Our results indicated that high salinity stress can enhance EPS production in solid state fermentation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据