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产表面活性剂解烃菌的筛选及其发酵条件优化

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摘要 为了获得产表面活性剂解烃菌,经血平板筛选和发酵液排油活性测定,从新疆石油污染土壤中分离出1株能产生物表面活性剂的石油降解菌B-1。通过形态和生理生化特征分析,初步鉴定该菌为芽孢杆菌属(Bacillus sp.)。通过产量指标对菌株B-1产生物表面活性剂的条件进行优化,确定其最适发酵条件为:p H值7.5、温度30℃、盐浓度5 g/L,在此条件下,生物表面活性剂产量可达1.76 g/L。薄层色谱分析结果表明,B-1产脂肽、脂蛋白类生物表面活性剂,可将发酵液表面张力从68.20 m N/m降低到31.70 m N/m,乳化指数(E24)达到92.80%。
作者 杨乐
出处 《江苏农业科学》 北大核心 2015年第11期437-439,共3页 Jiangsu Agricultural Sciences
基金 新疆石河子大学优秀青年项目(编号:2012ZRKXYQ10)
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