假丝酵母E-2产生物表面活性剂摇瓶发酵条件的优化

Chinese Journal of Bioprocess Engineering(2011)

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Abstract
从扬子石化的废水淤泥中筛选到1株能发酵液体石蜡产脂肽类生物表面活性剂的假丝酵母CandidaE-2。通过单因子实验和正交试验,得到了最佳发酵培养基组成(g/L):牛肉膏3.0,蔗糖2.0,酵母膏0.25,KH2PO412.5,MgSO40.3,NaCl 1.5,CaCl20.05,尿素0.5;液体石蜡10%(体积分数)。最佳培养条件:初始pH7.0,接种量0.12 g/L,装液量为200mL三角瓶30 mL,培养时间为5 d。最终产量提高了2.7倍,达1.582 g/L。
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Key words
fermentation,Candida,optimization,biosurfactant
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