高产絮凝剂菌株G-203的筛选及其性质
Journal of University of Jinan(Science and Technology)(2011)
Abstract
从活性污泥中分离得到一株高产絮凝剂菌株G-203,经16S rDNA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0.12~0.42 g/L时絮凝活性维持较高水平,最高达98.98%。菌株G-203发酵40 h絮凝剂产量达到最高值11.9 g/L,糖的转化率为59.5%。
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Key words
polysaccharide,conversion,bioflocculant,16S rDNA
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