Comparative study on the properties of lignin isolated from different pretreated sugarcane bagasse and its inhibitory effects on enzymatic hydrolysis

被引：52
作者：
Xu, Chao [1 ,4 ,5 ,6 ]
Liu, Fen [1 ,4 ,5 ,6 ]
Alam, Md. Asraful [2 ]
Chen, Huanjun [1 ,4 ,5 ,6 ]
Zhang, Yu [1 ]
Liang, Cuiyi [1 ,4 ,5 ,6 ]
Xu, Huijuan [1 ]
Huang, Shushi [3 ]
Xu, Jingliang [1 ,2 ]
Wang, Zhongming [1 ]
机构：
[1] Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 501640, Peoples R China
[2] Zhengzhou Univ, Sch Chem Engn, Zhengzhou 50001, Peoples R China
[3] Guangxi Acad Sci, Guangxi Key Lab Marine Nat Prod & Combinatorial B, Nanning 530007, Peoples R China
[4] CAS Key Lab Renewable Energy, Guangzhou 501640, Peoples R China
[5] Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 501640, Peoples R China
[6] Univ Chinese Acad Sci, Beijing 10049, Peoples R China
来源：
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2020年 / 146卷 / 146期
关键词：
Sugarcane bagasse; Lignin; Absorption; Cellulase; Enzymatic hydrolysis; ORGANOSOLV PRETREATMENT; STRUCTURAL FEATURES; ALKALI; ADSORPTION; SURFACTANT; HARDWOOD; BIOMASS; STRAW;
D O I：
10.1016/j.ijbiomac.2019.12.270
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：
Five sugarcane bagasse lignin samples, namely, dilute sulfuric acid (DSAL), sodium hydroxide (SHL), ethanol (EL), hot liquid water (HLWL)-pretreated residual solids, and raw material (cellulolytic enzyme lignin, CEL), were extracted. Comparative studies on the physicochemical properties of isolated lignin, nonproductive adsorption of cellulase by lignin, and its effect on enzymatic hydrolysis was performed. Results showed that the molecular weight and homogeneity of lignin remarkably decreased after pretreatment compared with CEL. Lignin with low negative zeta potential, high phenolic hydroxyl group content and hydrophobicity exhibited strong nonproductive adsorption performance to cellulase. This phenomenon was positively correlated with it's inhibitory effect on enzymatic hydrolysis. Compared with the control (without lignin), the Avicel conversion rate (40 mg lignin/200 mg Avicel) decreased by 10.74%, 9.28%, 8.73%, 4.22%, and 2.80% after digestion of Avicel for 72 h with the presence of EL, SHL, CEL, HLWL, and DSAL, respectively. (C) 2020 Elsevier B.V. All rights reserved.
引用
收藏
页码：132 / 140
页数：9
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