摘要
通过不同的化学试剂与汽爆组合处理稻草秸秆的研究，确定了有效的预处理条件：稻草秸秆与3％氢氧化钠溶液的固液比为1：5，混匀，置126—128℃保温5min，放气．此预处理能使秸秆中木质素去除75．58％；秸秆酶解（酶解条件：2％底物，0．2％纤维素酶，pH=4．8，0．2mol／L醋酸-醋酸钠缓冲溶液，46℃水解48h）糖化率达91．98％．
An effective pretreatment with the combined treatment of various chemical reagents and steam explosion on rice straw is determined, rice straw and 3% NaOH （W/V is 1： 5）, blending, holding at 126-128 ℃, insulation five minutes,gas discharge. 75.58% lignin in the straw can be removed by this pretreatment; enzymatic hydrolysis of rice straw （enzymatic hydrolysis conditions. 2 % substrate, 0.2 cellulose, pile. 8, 0.2mol/L HAc-NaAc buffer solution, temperature 46℃, hydrolysis 48h） reaches to 91.98%
关键词
秸秆
预处理
纤维素
纤维素酶
rice straw
pretreatment
cellulose
cellulase
