用于奶酪乳清粉（CWP）溶液分批乙醇发酵的酵母菌株比较。
Comparison of yeast strains for batch ethanol fermentation of cheese-whey powder (CWP) solution.
作者信息
Ozmihci S, Kargi F
机构信息
Department of Environmental Engineering, Dokuz Eylul University, Buca, Izmir, Turkey.
出版信息
Lett Appl Microbiol. 2007 Jun;44(6):602-6. doi: 10.1111/j.1472-765X.2007.02132.x.
AIMS
To test the suitability of cheese whey powder (CWP) solution for ethanol fermentation and to compare performances of different Kluyveromyces marxianus strains for ethanol fermentation from CWP solution.
METHODS AND RESULTS
Batch ethanol fermentation of cheese whey (CW), CWP and lactose solutions with the same initial sugar contents were compared by using two different K. marxianus strains and the CWP solution was found to be the most suitable substrate. CWP solution was fermented to ethanol using three different yeast strains and DSMZ-7239 was found to be the most suitable one yielding the highest rate and extent (3.3%, v/v) of ethanol formation.
CONCLUSIONS
CWP solution and K. marxianus strain of DSMZ-7239 were found to be more suitable for ethanol fermentation with the highest ethanol yield when compared with the other substrates and the yeast strains tested.
SIGNIFICANCE AND IMPACT OF THE STUDY
CWP can be used as a concentrated form of CW for ethanol fermentations with considerable advantages.
目的
测试奶酪乳清粉（CWP）溶液用于乙醇发酵的适用性，并比较不同马克斯克鲁维酵母菌株从CWP溶液中进行乙醇发酵的性能。
方法与结果
使用两种不同的马克斯克鲁维酵母菌株比较了初始糖含量相同的奶酪乳清（CW）、CWP和乳糖溶液的分批乙醇发酵，发现CWP溶液是最合适的底物。使用三种不同的酵母菌株将CWP溶液发酵为乙醇，发现DSMZ-7239是最合适的菌株，乙醇形成速率和程度最高（3.3%，v/v）。
结论
与测试的其他底物和酵母菌株相比，发现CWP溶液和DSMZ-7239的马克斯克鲁维酵母菌株更适合乙醇发酵，乙醇产量最高。
研究的意义和影响
CWP可以用作CW的浓缩形式用于乙醇发酵，具有相当大的优势。
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