木质素
解聚
木质纤维素生物量
化学
纤维素
深共晶溶剂
共晶体系
有机化学
生物量(生态学)
水解
单体
酶水解
化学工程
聚合物
工程类
地质学
海洋学
合金
作者
Shuizhong Wang,Helong Li,Ling‐Ping Xiao,Guoyong Song
标识
DOI:10.3389/fenrg.2020.00048
摘要
Deep eutectic solvents (DESs) can efficiently promote the efficiency of cellulose enzymatic hydrolysis through the removal of lignin component in lignocellulosic biomass pretreatment. Unraveling the fundamental structural variant of lignin during DES treatment would facilitate to understand the DES-based biomass pretreatment in a clear perspective. Herein, an enzymatic mild acidolysis lignin (EMAL) and a series of β-O-4 lignin model compounds were employed to be treated with ChCl/LA (1:2) DES, from which the structural variant of all lignin fractions can be realized in a detailed version. The β-O-4 linkages, existed in either realistic lignin or model compounds, could be cleaved by ChCl/LA, thus leading to the decrease of molecular weight and the rise of hydroxyl groups. The influence of reaction temperature and time was also examined in view of some key structural parameters. Experimental evidences from model compounds confirmed that the repolymerization occurs with the depolymerization of lignin, which may account for the low production of monomeric products during DES treatment.
科研通智能强力驱动
Strongly Powered by AbleSci AI