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粟酒裂殖酵母发酵菊芋生产燃料乙醇试验

DOI: 10.3969/j.issn.1000-1298.2010.1.021

Keywords: 菊芋,粟酒裂殖酵母,同步糖化发酵,乙醇发酵

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Abstract:

以菊粉为原料,研究了粟酒裂殖酵母的乙醇发酵性能,并考察了温度、初始pH值和菊粉质量浓度对乙醇发酵的影响,进而研究了粟酒裂殖酵母发酵菊芋汁和菊芋粉生产乙醇的情况。结果表明:粟酒裂殖酵母能发酵菊粉高产乙醇;该菌株最适发酵温度为30℃,最适初始pH值为40,在此条件下,菊粉质量浓度200g/L时,乙醇质量浓度达到7458g/L,理论转化率为8124%;直接发酵菊芋汁和菊芋粉获得更高的乙醇产率,理论转化率分别达到8402%和8609%。

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