林产化学与工业2013，Vol.33Issue(2)：25-30,6.DOI:10.3969/j.issn.0253-2417.2013.02.004
4种木质纤维素预处理方法的比较
Four Kinds of Pretreatment Methods for Lignocellulosics
摘要
Abstract
Corn stalk was pretreated by four kinds of pretreatment methods, namely, dilute acid, dilute acid refining, neutral steam explosion and dilute acid steam explosion. The effects of pretreatment on enzymatic hydrolysis and yield of fermentable sugars were investigated. The components of pretreated corn stalk, sugars in pre-hydrolyzate, carbohydrate and lignin degradation products in pre-hydrolyate were also analyzed. After 100 g com stalk was pretreated by dilute acid, dilute acid refining, neutral steam explosion and dilute acid steam explosion followed by washing, the cellulose content -dropped from 37. 17g to 33. 96, 33.54, 32.63 and 32. 88 g, respectively; the xylan content declined from 22.84 g to 2.77, 2.47, 3.56 and 2.05 g respectively and lignin content reduced to 17.63, 17.42, 16.90 and 17.25 g from 18.76 g, respectively. When dilute acid steam explosion pretreated corn stalk was treated by 20 FPIU/g cellulose cellulase and 3 IU/g cellulose β-glucosidase for 48 h as the substrate concentration was 100g/L, the hydrolysis yield of cellulose was 75.91 % (based on com stover). The yield of fermentable sugars was 44.93 % (based on corn stover) as the corn stover was pretreated by dilute acid steam explosion and enzymatic hydrolysis.关键词
木质纤维素/预处理/蒸汽爆破/生物乙醇Key words
lignocellulose/pretreatment/steam explosion/bioethanol分类
化学化工引用本文复制引用
马斌,储秋露,朱均均,欧阳嘉,余世袁,勇强..4种木质纤维素预处理方法的比较[J].林产化学与工业,2013,33(2):25-30,6.基金项目
国家林业局林业行业公益专项(200904017) （200904017）
国家自然科学基金项目(31070523) （31070523）
江苏省科技支撑计划(BE2010732) （BE2010732）
