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鸡源乳酸杆菌M8最佳培养条件的确定及培养基优化

DOI: 10.3321/j.issn:1000-7091.2007.02.042, PP. 171-174

Keywords: 乳酸杆菌,培养条件,培养基,菊粉

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Abstract:

从北京油鸡盲肠黏膜中分离得到1株戊糖乳酸杆菌M8,在通气和密闭培养条件下对生长OD600nm值和pH值进行了测定。结果显示:M8在通气培养条件下OD600nm最高值为1.011,pH值最低为4.40,而密闭培养条件下OD600nm达2.049,pH降至3.42,确定密闭培养为最佳培养条件。密闭培养条件下,在培养基中添加不同比例的菊粉(1%,2%,3%,4%),探讨菊粉对菌株生长情况的影响,结果发现:当菊粉添加量为3%时效果最佳,其OD600nm最高达2.937,pH最低降至3.40。

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