摘要
研究了化学预处理对玉米秸秆酶解糖化效果的影响。结果表明效果最好的是40目玉米秸秆粉用0·5%的稀盐酸在121℃预处理60min后,加入纤维素酶2.5g·(100g)-1和木聚糖酶液2mL·(100g)-1,在pH4.8的乙酸-乙酸钠缓冲液体系中,液固比为10、50℃下糖化48h,玉米秸秆的总糖产率达48.5%、纤维素和半纤维素的转化率达80.8%。
The effect of pretreatment on enzymatic saccharification of maize straw by several chemical substances were studied. The result showed the optimum conditions as follows:the maize straw powder of 40 mesh was pretreated in 0.5% HCl at 121℃ for 60 min,and then was saccarified for 48 h at 50℃ in the buffer solution of acetic acid-sodium acetate of pH 4.8, with the ratio of liquid to solid 10,appending cellulase 2.5 g . (100 g)^-1 and xylanase 2 mL .(100 g)^-1. As a result,the gross saccharification rate reached 48.5% and the transformation rate of cellulose and hemicellulose reached 80.8%.
出处
《化学与生物工程》
CAS
2006年第8期31-33,共3页
Chemistry & Bioengineering
基金
河南省杰出人才创新基金资助项目(321001300)
河南省教育厅自然科学基金项目(2003180061)
关键词
化学预处理
纤维素酶
木聚糖酶
糖化
chemical pretreatment
cellulase
xylanase
saccharification