Novel approach for corn straw biorefineries: Production of xylooligosaccharides, lignin and ethanol by nicotinic acid hydrolysis and pentanol pretreatment

被引：14

作者：

Liao, Hong ^{[1
]}

Feng, Baojun ^{[1
,2
,3
]}

Ying, Wenjun ^{[1
,2
,3
]}

Lian, Zhina ^{[1
,2
,3
]}

Zhang, Junhua ^{[1
,2
,3
]}

机构：

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

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

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

来源：

BIORESOURCE TECHNOLOGY | 2024年 / 395卷

基金：

中国国家自然科学基金;

关键词：

Graded fractionation; Cellulase hydrolysis; Simgultaneous saccharification and; fermentation; Valorization; ORGANOSOLV PRETREATMENT; ENZYMATIC-HYDROLYSIS; CELLULOSE; OPTIMIZATION; COMPONENTS; CLEAVAGE; BAGASSE;

D O I：

10.1016/j.biortech.2024.130352

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The productive separation and conversion of corn straw offers significant prospects for the economic viability of biorefineries centered on straw resources. In this work, a graded utilization method was proposed to produce xylo-oligosaccharides (XOS), ethanol and lignin from corn straw by nicotinic acid (NA) hydrolysis and water/ pentanol pretreatment. A XOS yield of 52.6 % was achieved under optimized conditions of 100 mM NA, 170(degrees)C and 30 min. The solid residue was directly treated with water/pentanol, achieving a lignin removal rate of 79.7 %, and the total XOS yield was improved to 62.6 %. The lignin recovered from pentanol had a high purity of 97.6 %, with high phenolic OH content. Simultaneous saccharification and fermentation of final residue resulted in an ethanol yield of 92.0 %, which yielded 55.3 g/L ethanol. Thus, NA hydrolysis and water/pentanol pretreatment provided an efficient, environmentally friendly approach to fractionate corn straw for the co-production of XOS, ethanol, and lignin.

引用

页数：10

共 39 条

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