摘要
在木薯生产乙醇的液化糖化阶段,双酶法在纤维素酶、葡聚糖酶等辅助下,可以提高还原糖的得率和浓度,并且降低液化的温度和缩短糖化时间。基于上述工艺,对发酵阶段的一些参数进行了研究,初步确定了酵母的培养时间为24 h,发酵时间为48 h;单因素试验结果表明,营养物尿素的最适量为原料的0.5‰,磷酸二氢钾为0.5‰,氯化钙为1.0‰,硫酸镁为0.5‰。
At cassava liquefying and saccharifing stage,two enzymes with the help of cellulase,glucanase and other enzymes can improve the production and concentration of reducing sugar and reduce liquefying temperature and shortening saccharifing time.Based on the process above,some parameters at the fermentation stage were studied in this paper.The research showed that 24 hours was the better yeast cultivating time,48 hours was better fermentation time.The single factor experiments showed that the ratio of urea to cassava was 0.5‰,potassium dihydrogen phosphate was 0.5‰,calcium chloride was 1.0‰,and magnesium sulfate was 0.5‰.
出处
《现代农业科技》
2011年第7期357-359,共3页
Modern Agricultural Science and Technology
基金
2010年度国家创新基金(10C26215305112)
关键词
双酶工艺
酵母
培养时间
发酵时间
木薯出酒率
two enzymes condition
yeast
cultivation time
fermentation time
liquor yield of cassava
