Chapter 1 Introduction 引言/ 1 1.1Chemical Composition of lignocellulosic biomass 木质纤维素生物质的化学组成1 1.2Reactions of polysaccharide and lignin during bioconversion process 生物质转化过程中的化学反应16 References29 Chapter 2 The effect of mild alkaline pretreatment on lignocellulosic bioconversion 弱碱性预处理对木质纤维素生物质转化的影响/ 30 2.1Green liquor pretreatment for improving enzymatic hydrolysis of corn stover 绿液预处理提高玉米秸秆酶解性能的研究30 2.2Effects of green liquor pretreatment on the chemical composition and enzymatic digestibility of rice straw 绿液预处理对稻���化学成分和酶解糖化的影响41 2.3Effects of green liquor pretreatment on the chemical composition and enzymatic hydrolysis of several lignocelluloses 绿液预处理对其他几种原料化学成分及酶解的影响54 2.4Sulfite-formaldehyde pretreatment on rice straw for the improvement of enzymatic saccharification 稻草亚硫酸盐-甲醛预处理提高酶解糖化的研究64 2.5Comparison of chemical pretreatments for improving enzymatic digestibility of poplar 几种化学预处理对杨树酶解糖化影响的比较76 References87 Chapter 3 The effect of lignin structure on enzymatic hydrolysis 木质素结构对木质纤维素酶解糖化的影响/ 93 3.1Influence of lignin addition on the enzymatic digestibility of pretreated lignocellulosic biomasses 添加木质素改性物提高预处理后木质纤维素酶解糖化的研究93 3.2Reaction of β-O-4 type lignin model compounds under green liquor pretreatment conditions 绿液预处理条件下β-O-4型木质素模型化合物的反应103 3.3The effects of LiCl/DMSO dissolution/regeneration on the isolation of cellulolytic enzyme lignin (CEL) from wheat straw 氯化锂/二甲基亚砜体系溶解/再生麦草对酶解木质素分离的影响112 3.4Structural changes of wheat straw lignin during green liquor and sodium carbonate pretreatment 麦草木质素在绿液和碳酸钠预处理过程中的结构变化130 References145 Chapter 4 Preparation of nanocellulose by endoglucanase and mechanical mill 内切酶预处理结合机械法制备纳米纤维素/ 150 4.1Production of cellulose nanofibrils from bleached eucalyptus fibers by hyperthermostable endoglucanase treatment and subsequent microfluidization 漂白桉木浆内切葡聚糖酶处理结合微射流技术制备纤维素纳米纤维150 4.2Endoglucanase post-milling treatment for cellulose nanofibril production from bleached eucalyptus pulp by a super mass colloider 漂白桉木浆超微粒研磨结合内切葡聚糖酶后处理制备纤维素纳米纤维163 4.3Physical and mechanical properties of cellulose nanofibril films from bleached eucalyptus pulp by endoglucanase treatment and microfluidization 漂白桉木浆纤维素纳米纤维膜的制备及其物理力学性能177 References186