玉米秸秆发酵燃料乙醇预处理条件的优化  

Optimization of Pretreatment Condition for Corn Stover Fermentation Fuel Ethanol

作　　者：汤斌[1] 陈中碧[1] 张庆庆[1] 翟光雯[1] 周逢云[1] 陈阿娜[1] 程旺开[1] 

机构地区：[1]安徽工程科技学院生物化学工程系,微生物发酵安徽省工程技术研究中心,安徽芜湖241000

出　　处：《食品与发酵工业》2008年第6期65-67,共3页Food and Fermentation Industries

基　　金：安徽省高校自然科学基金重点资助项目(kJ2007A018)

摘　　要：以玉米秸秆为原料,利用不同浓度的稀硫酸在均相反应器中对其进行高温水解,获取可发酵性还原糖。结果表明,以0.8%(w/w)的稀硫酸,在150℃,保温1h的预处理条件下,水解还原糖得率达57.3%。对处理过的玉米秸秆进行X射线衍射分析,发现其结晶度提高。该条件的处理液经纤维素酶与木聚糖酶酶解,还原糖得率可达92%以上。In this study, raw material corn stover was hydrolyzed for fermentable sugar at high temperature in the equal phase reactor using dilute-sulfuric acid. The results showed that the optimal condition was dilute-sulfuric acid concentration of 0.8% （w/w）, temperature at 150℃ for lh. The yield of reductive sugar was 57.3%. X-ray was then used to analyze pretreated corn straw. The result showed that its crystal-degree enhanced. Also the solution was hydrolyzed with cellulase and xylanase. The yield of reductive sugar exceeded 92% ultimately.

关 键 词：玉米秸秆 均相反应器 预处理 还原糖 结晶度 纤维素酶 

分 类 号：TQ223.122[化学工程—有机化工] O623.11[理学—有机化学]