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Position: Home > Articles > A Novel Method for Enhancing Ethanol Fermentation by Saccharomyces cerevisiae FOOD SCIENCE 2010,31 (19) 292-294

促进酵母菌乙醇发酵新方法

作  者:
惠丰立;褚学英;柯涛;张彩莹
单  位:
南阳师范学院生命科学与技术学院
关键词:
酵母菌;乙醇发酵;固态基质;稻壳
摘  要:
在发酵培养基中添加固态基质,研究不同固态基质对酵母菌乙醇发酵的促进作用。结果表明:在培养基中分别添加2g/100mL的麦秸杆、花生壳、稻壳和锯末,可使发酵液中乙醇质量浓度提高了15.5%~24.8%。在4种不同固态基质中,稻壳对酵母菌乙醇发酵的促进作用最显著。以稻壳作为固态基质,确定了添加固态基质条件下酵母菌乙醇发酵的最适条件为:稻壳2.5g/100mL、初糖12g/100mL、温度30℃、发酵时间48h。在适宜的发酵条件下,发酵液中乙醇质量浓度可达到51.8g/L,为理论产率的92.7%。
译  名:
A Novel Method for Enhancing Ethanol Fermentation by Saccharomyces cerevisiae
作  者:
HUI Feng-li,CHU Xue-ying,KE Tao,ZHANG Cai-ying (College of Life Science and Technology,Nanyang Normal University,Nanyang 473061,China)
关键词:
yeast;ethanol fermentation;solid matrix;rice hull
摘  要:
Solid matrix was added to fermentation medium for exploring the effect of solid matrix on ethanol fermentation in yeast cells. Results indicated that the addition of 2 g of straw,peanut hull,rice hull or wood shavings to 100 mL medium could improve ethanol production by 15.5% -24.8%. Rice hull was the most suitable solid matrix and the optimal technological parameters for rice hull were found to be:rice hull amount 2.5 g/100 mL; initial glucose concentration 12 g/100 mL; fermentation temperature 30 ℃,and fermentation time 48 h. Under these optimal conditions,the actual production of alcohol reached up to 51.8 g/L,which was 92.7% of the theoretical value.

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