Improved Ethanol Production by Mixed Immobilized Cells of Kluyveromyces marxianus and Saccharomyces cerevisiae from Cheese Whey Powder Solution Fermentation

被引：0
作者：
Xuewu Guo
Jun Zhou
Dongguang Xiao
机构：
[1] Tianjin University of Science and Technology,Tianjin Industry Microbiology Key Lab, College of Bioengineering
来源：
Applied Biochemistry and Biotechnology | 2010年 / 160卷
关键词：
Ethanol; Mixed cultures; Immobilization; Cheese whey powder;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Ethanol productions from cheese whey powder (CWP) solution were investigated by using free or immobilized cells of Kluyveromyces marxianus in monocultures or mixed cultures with free or immobilized cells of K. marxianus and Saccharomyces cerevisiae. K. marxianus free cells produced 3.8% v/v ethanol in monocultures, while S. cerevisiae immobilized cells produced 5.3% v/v ethanol in mixed cultures. The percentage of theoretical yield was found to be higher in mixed cultures than that in monocultures. The maximum ethanol fermentation efficiency was achieved (79.9% of the theoretical value) using mixed cultures of immobilized cells of K. marxianus and S. cerevisiae. The beads were relatively stable without significant reduction in activity for about eight batches of fermentation.
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页码：532 / 538
页数：6
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