促进酵母菌乙醇发酵新方法  

A Novel Method for Enhancing Ethanol Fermentation by Saccharomyces cerevisiae

作　　者：惠丰立[1] 褚学英[1] 柯涛[1] 张彩莹[1] 

机构地区：[1]南阳师范学院生命科学与技术学院,河南南阳473061

出　　处：《食品科学》2010年第19期292-294,共3页Food Science

基　　金：河南省科技厅科技攻关项目(092102110120);河南省教育厅自然科学基金项目(2009A180012)

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%。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.

关 键 词：酵母菌 乙醇发酵 固态基质 稻壳 

分 类 号：S216.2[农业科学—农业机械化工程]