摘要
从活性污泥中分离得到一株高产絮凝剂菌株G-203，经16SrDNA测序后鉴定为Klebsiellasp．G-203菌产生的絮凝剂LH5-2是一种胞外絮凝剂，经组分分析，LH5-2是一种含有少量蛋白的多糖物质。LH5-2在pH=7～12时稳定性好，在质量浓度为0．12—0．42g／L时絮凝活性维持较高水平，最高达98．98％。菌株G-203发酵40h絮凝剂产量达到最高值11．9g／L，糖的转化率为59．5％。
Germ G-203 with high flocculating activity was obtained from activated sludge, and was identified to be Klebsiella sp. through 16S rDNA sequencing method. Bioflocculant LH 5-2 is a kind of extracelluar polymer substance which is a polysaccharide con- taining a small amount of protein. At pH 7-12 and LH 5-2 concentrations from 0.12 to 0.42 g/L, the flocculating activity maintains a high level,and reaches up to 98.98% at most. When G-203 is fermented for 40 h,LH 5-2 reaches its maximal yield 11.9 g/L and the sugar conversion rate achieves 59.5%.
出处
《济南大学学报（自然科学版）》
CAS
北大核心
2011年第1期59-63,共5页
Journal of University of Jinan(Science and Technology)
基金
山东省优秀中青年科学家科研奖励基金(2007BS02009)
微生物技术国家重点实验室开放课题(2008-08)
济南大学博士基金(B0602)
