Comparison of selective acidolysis of xylan and enzymatic hydrolysability of cellulose in various lignocellulosic materials by a novel xylonic acid catalysis method

被引：41

作者：

Guo, Jianming ^{[1
,2
,3
]}

Cao, Rou ^{[1
,2
,3
]}

Huang, Kaixuan ^{[1
,2
,3
]}

Xu, Yong ^{[1
,2
,3
]}

机构：

[1] Nanjing Forestry Univ, Minist Educ, Key Lab Forestry Genet & Biotechnol, Nanjing 210037, Peoples R China

[2] Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat F, Nanjing 210037, Peoples R China

[3] Jiangsu Prov Key Lab Green Biomass Based Fuels &, Nanjing 210037, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2020年 / 304卷

关键词：

Lignocellulosic materials; Xylonic acid acidolysis; Uniform design experiments; Xylo-oligosaccharide; Enzyme-hydrolyzed glucose; CORN STOVER; GLUCONIC ACID; XYLOOLIGOSACCHARIDES; PRETREATMENT; HEMICELLULOSES; HYDROLYSIS; COPRODUCTION; OPTIMIZATION; LIGNIN;

D O I：

10.1016/j.biortech.2020.122943

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

An economically-prudent pretreatment is a crucial first step towards realization of the industrial lignocellulosic biorefinery. The aim of this study was to utilize lignocellulosic biomass to co-produce xylo-oligosaccharides (XOS) and glucose starting from a novel self-providing xylonic acid (XA) acidolysis method. Based on the optimization results of main acidolysis pretreatment parameters by uniform design experiments, we found that among various lignocellulosic materials, the highest yield of XOS from xylan was 54.16% with corncob, followed by 39.19% with wheat straw, 29.01% with corn straw and 30.23% with poplar sawdust. By effective degradation and removal of xylan constituents with XA acidolysis, enzymatic hydrolysabilities of inert cellulose constituents of corn cob, corn straw, wheat straw and poplar sawdust were achieved to 100%, 72.94%, 75.35% and 38.97%. Comparative mass balance diagrams of xylan and cellulose reveal that XA acidolysis pretreatment is environmental-friendly and effective for three agricultural residues, apart from woody poplar.

引用

页数：8

共 32 条

[31] Integrated production of gluconic acid and xylonic acid using dilute acid pretreated corn stover by two-stage fermentation [J].