Correlating Physical Changes and Enhanced Enzymatic Saccharification of Pine Flour Pretreated by N-Methylmorpholine-N-oxide

被引：13

作者：

Liu, Ye ^{[2
]}

Zhong, Quin ^{[1
]}

Wang, Siqun ^{[3
]}

Cai, Zhiyiong ^{[4
]}

机构：

[1] Univ Tennessee, Dept Food Sci & Technol, Knoxville, TN 37996 USA

[2] Wuhan Polytech Univ, Dept Environm Chem & Engn, Wuhan 430023, Peoples R China

[3] Univ Tennessee, Ctr Renewable Carbon, Dept Forestry Wildlife & Fisheries, Knoxville, TN 37996 USA

[4] US Forest Serv, USDA, Forest Prod Lab, Madison, WI 53726 USA

来源：

BIOMACROMOLECULES | 2011年 / 12卷 / 07期

关键词：

MICROBIAL PRETREATMENT; SUGARCANE BAGASSE; CELLULOSE; HYDROLYSIS; FEATURES; BIOMASS; FERMENTATION; NMMO;

D O I：

10.1021/bm2004302

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Pretreatment of lignocellulosic biomass by N-methylmorpholine-N-oxide (NMMO), a solvent used in the textile industry to dissolve cellulose for production of regenerated cellulose fibers, was observed to enhance significantly enzymatic saccharification and fermentation. The enhancement was speculated to have been caused by reduced cellulose crystallinity after dissolution and precipitation processes. This work focused on assessing several physical changes and their correlations to enzymatic saccharification of pine flour after NMMO pretreatment. Results from microstructure, surface chemical composition, and cellulose accessibility complementarily illustrated the enrichment of cellulose on pine flour surface after NMMO pretreatment. Cellulose accessibility was highly correlated to the overall glucan conversion rate. Changes in crystallinity were correlated to the initial hydrolysis rate but not overall glucan conversion rate. Findings from this work may contribute to lignocellulosic bioenergy from development of novel pretreatment technologies utilizing NMMO.

引用

页码：2626 / 2632

页数：7

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