文献类型：期刊文献

英文题名：Investigation of a Na2S-assisted deep eutectic solvent pretreatment for enhanced cellulose/xylan saccharification and high-quality lignin with abundant ether bond

作者：Liu, Xuze[1] Liang, Fangmin[1] Cheng, Jinyuan[1] Zhou, Xuelian[1] Wang, Jia[2] Fang, Guigan[1] Shen, Kuizhong[1] Meng, Xianzhi[3] Huang, Chen[1] Ragauskas, Arthur J.[3,4,5]

通信作者：Zhou, XL[1];Huang, C[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Jiangsu Prov Key Lab Biomass Energy & Mat, Nanjing 210042, Peoples R China;[2]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Nanjing 210037, Peoples R China;[3]Univ Tennessee Knoxville, Dept Chem & Biomol Engn, Knoxville, TN 37996 USA;[4]Univ Tennessee, Inst Agr, Ctr Renewable Carbon, Dept Forestry Wildlife & Fisheries, Knoxville, TN 37996 USA;[5]Oak Ridge Natl Lab, Joint Inst Biol Sci, Biosci Div, Oak Ridge, TN 37831 USA

年份：2024

卷号：208

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20234815106704);Scopus(收录号：2-s2.0-85177617471);WOS:【SCI-EXPANDED(收录号:WOS:001123090000001)】；

基金：This work was supported by National Natural Science Foundation of China (31890771, 32371821, 32301546) , Jiangsu Province Key Laboratory of Biomass Energy and Materials (JSBEM-S-202203) , and Young Elite Scientist Sponsorship Program by CAST. AJR and XM efforts were supported by The University of Tennessee, Knoxville.

语种：英文

外文关键词：DES pretreatment; Carbohydrates preservation; Enzymatic hydrolysis; Lignin

摘要：Herein, a novel Na2S-facilitated deep eutectic solvent (DES) pretreatment using choline chloride/ethylene gly-col/sodium sulfide system (ChCl/EG/Na2S) was proposed to fractionate moso bamboo (MB), which could result in as high as 70.93% lignin removal, while glucan and xylan showed high recovery of 93.83% and 55.59%, accompanied by excellent enzymatic digestibility. Remarkably, the recovered lignin possessed a high recovery yield (80.59%), which contained high beta-O-4 bond content of 21.74-40.45/100Ar with very limited condensation structures. The fractionation behavior of the DES was investigated by composition analysis, SEM, FQA, FTIR, GPC, and NMR which revealed its working mechanism. This study highlighted that the Na2S DES could preserve most cellulose and hemicellulose in the solid while removing lignin substantially with intact structure, which contributes to the valorization of both carbohydrates and lignin in the biomass.