Stepwise transform sugarcane bagasse into xylooligosaccharides and fermentable glucose by hydrothermal-xylanase-acid-cellulase hydrolysis

被引：7

作者：

Zhang, Qibo ^{[1
]}

Zhai, Yujie ^{[1
]}

Yao, Shuangquan ^{[2
]}

Huang, Rong ^{[3
]}

Zhou, Xin ^{[1
]}

Jiang, Kankan ^{[3
]}

机构：

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

[2] Guangxi Univ, Sch Light Ind & Food Engn, Guangxi Key Lab Clean Pulp & Papermaking & Pollut, Nanning 530004, Peoples R China

[3] Hangzhou Med Coll, Sch Basic Med Sci & Forens Med, Hangzhou 310053, Peoples R China

来源：

INDUSTRIAL CROPS AND PRODUCTS | 2023年 / 206卷

关键词：

Xylooligosaccharides; Sugarcane bagasse; Hydrothermal pretreatment; Xylanase hydrolysis; Glucose; LIGNOCELLULOSIC BIOMASS; AUTOHYDROLYSIS; PRETREATMENT; PREBIOTICS; CORNCOB;

D O I：

10.1016/j.indcrop.2023.117676

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Hydrothermal pretreatment can effectively degrade the hemicellulosic xylan into xylooligosaccharides; however, the low degree of polymerization (DP) oligomers are dissatisfied. Considering the significance of low DP, one approach to enhance the levels of low DP xylooligosaccharides is to utilize endo-xylanase for degrading the high DP xylooligosaccharides. Therefore, a combination method of hydrothermal and post endo-xylanase hydrolysis was employed in this study to enhance XOS yields. As a result, a maximum XOS of 54.5% with low DP was achieved from sugarcane bagasse, and the ratio of (DP2+DP3)/XOS was remarkably improved. Following the preparation of XOS, an additional acidic hydrolysis using dilute sulfuric acid was performed to enhance the saccharification efficiency of cellulose, resulting in a significant increase in yield of enzymatic hydrolysis to over 90%. Overall, biomass-derived sugar products (XOS and glucose) can be co-produced for adding the value of the sugarcane bagasse by sequential hydrothermal-endo-xylanase-acid-cellulase hydrolysis.

引用

页数：7