摘要
研究了培养基起始pH、发酵时间、发酵温度、酵母接种量和吐温80对水稻秸秆同步糖化发酵产乙醇的影响。结果表明,酵母接种量能有效地提高发酵液中乙醇的产率。水稻秸秆同步糖化发酵生产燃料乙醇的适宜发酵工艺条件为:起始pH值为4.0～4.5,培养温度为32℃,接种量为12%,发酵时间12～24 h。在此条件下,生成乙醇的浓度为1.4 mg/mL,水稻秸秆原料的乙醇转化率达7.02%。
The effects of different conditions including initial pH value of culture medium, fermentation time, fermentation temperature, and yeast inoculation quantity and Tween-80 on simultaneous saccharification and fermentation of rice straw to produce fuel ethanol were investigated. The results showed that yeast inoculation quantity could effectively increase ethanol yield in fermenting liquid. Under the optimum fermentation conditions （initial pH as 4.0-4.5, fermentation temperature at 32 ℃, and yeast inoculation quantity was 12 %, and fermentation time was 12-24 h）, the produced ethanol content was 1.4 mg/mL and the conversion rate from rice straw to ethanol was 7.02 %.
出处
《酿酒科技》
2010年第2期23-26,共4页
Liquor-Making Science & Technology
基金
省科技创新平台建设计划项目"福建省特种稻创新平台建设"(2007S1001)
省科技重大专项专题项目"特种稻育种与综合利用技术研究"(2008NZ0001-4)
关键词
燃料乙醇
水稻秸秆
同步糖化发酵
哈茨木霉
fuel ethanol
rice straw
simultaneous saccharification and fermentation
Harzianum Trichoderma
