生物质化学工程2011，Vol.45Issue(5)：11-16,6.
弱碱性过氧化预处理对稻草秸秆酶解糖化的影响
Effects of Mild Alkaline Peroxide Pretreatment on Enzymatic Saccharification of Rice Straw
摘要
Abstract
Mild alkaline peroxide pretreatment conditions for rice straw were optimized with a view to increase the ratio of enzymatic saccharification.The results showed that the mild alkaline peroxide pretreatment reduced the content of lignin and increased the content of cellulose of rice straw.The optimal pretreament conditions were as follows ： temperature 40 ℃,reaction time 24 h,hydrogen peroxide 2.0 %.Under the optimal conditions,the enzymatic saccharification ratio of the mild alkaline peroxide pretreated rice straw was 83.23 %.The enzymatic saccharification ratio of rice straw pretreated by the alkaline with 2.0 % NaOH,temperature 30 ℃,time 24 h was 70.38 %.The enzymatic saccharification ratio of the mild alkaline peroxide pretreated rice straw is higher evidently than that of the alkaline pretreated rice straw.The results also showed that the removal efficiency of lignin was affected by the mass fraction of hydrogen peroxide.When the mass fraction of hydrogen peroxide is greater than 2.0 %,the selectivity of lignin removal is decreased.Lignin removal remains unchanged,but the loss ratio of hemicelluloses is increased.关键词
弱碱性/过氧化氢/稻草/预处理/酶水解Key words
mild alkaline/peroxide/rice straw/pretreatment/enzymatic hydrolysis分类
化学化工引用本文复制引用
李辉勇,金密,魏琴琴,李志光..弱碱性过氧化预处理对稻草秸秆酶解糖化的影响[J].生物质化学工程,2011,45(5):11-16,6.基金项目
湖南省自然科学基金重点项目 （）
湖南省教育厅项目 （）
