γ-Valerolactone/CuCl_(2)biphasic system for high total monosaccharides recovery from pretreatment and enzymatic hydrolysis processes of eucalyptus  

作　　者：Shuhua Mo Yao Zheng Jianyu Gong Minsheng Lu 

机构地区：[1]Guangxi Key Laboratory of Clean Pulp&Papermaking and Pollution Control,School of Light Industrial and Food Engineering,Guangxi University,Nanning 530004,China

出　　处：《Frontiers of Chemical Science and Engineering》2024年第11期399-412,共14页化学科学与工程前沿（英文版）

基　　金：Opening Project of Guangxi Key Laboratory of Clean Pulp&Papermaking and Pollution Control(Grant No.2021KF41);Young Innovative Talents Scientific Research Project of Guangxi(Grant No.AD23026256);Guangxi Natural Science Foundation of China(Grant No.2023GXNSFGA026001).

摘　　要：The efficient fractionation and recovery of monosaccharides(xylose and glucose)from lignocellulosic biomass facilitates subsequent sugar-based derivative production.This study introduces a one-potγ-valerolactone/CuCl_(2)biphasic pretreatment system(100-mmol·L^(-1)CuCl_(2),180°C,60 min)capable of achieving removal rates of 92.25%and 90.64%for xylan and lignin,respectively,while retaining 83.88%of cellulose.Compared to other metal chlorides(NaCl,LiCl,FeCl_(3),and AlCl_(3)),theγ-valerolactone/CuCl_(2)system recovered 121.2 mg·(g eucalyptus)^(-1)of xylose and 55.96 mg·(g eucalyptus)^(-1)of glucose during the pretreatment stage and 339.2 mg·(g eucalyptus)^(-1)of glucose during the enzymatic hydrolysis stage(90.78%of glucose yield),achieving a total monosaccharide recovery of 86.31%.In addition,the recovery ofγ-valerolactone was 79.33%,exhibiting minimal changes relative to the pretreatment performance.The method proposed in this study allows a high total monosaccharides recovery and a circular economy-oriented pretreatment approach,offering a viable pathway for biorefinery.

关 键 词：LIGNOCELLULOSE BIOREFINERY total monosaccharides recovery γ-valerolactone 

分 类 号：O629.112[理学—有机化学]