文献类型：期刊文献

英文题名：Low-chromophore lignin isolation from natural biomass with polyol-based deep eutectic solvents

作者：Cheng, Jinyuan[1,2] Zhou, Xuelian[1] Huang, Caoxing[2] Yoo, Chang Geun[6] Meng, Xianzhi[3] Fang, Guigan[1,2] Ragauskas, Arthur J.[3,4,5] Huang, Chen[1,2]

第一作者：Cheng, Jinyuan

通信作者：Fang, GG[1];Huang, C[1];Fang, GG[2];Huang, C[2]

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;[6]SUNY, Coll Environm Sci & Forestry, Dept Paper & Bioproc Engn, Syracuse, NY 13210 USA

年份：2024

卷号：26

期号：14

起止页码：8298-8314

外文期刊名：GREEN CHEMISTRY

收录：;EI(收录号：20242816670985);Scopus(收录号：2-s2.0-85197530942);WOS:【SCI-EXPANDED(收录号:WOS:001261904700001)】；

基金：This work was supported by the National Natural Science Foundation of China (32371821, 32301546), the Fundamental Research Funds of CAF (CAFYBB2023QA006), the National Key Technology Research and Development Program of China (2023YFD2201904), the Jiangsu Province Key Laboratory of Biomass Energy and Materials (JSBEM-S-202203), and the Young Elite Scientist Sponsorship Program by CAST. The AJR and XM efforts were supported by the University of Tennessee, Knoxville.

语种：英文

外文关键词：Biomass - Chemical modification - Chromophores - Color - Eutectics - Saccharification - Wood

摘要：When attempting to obtain light-color lignin from lignocellulosic biomass or industrial lignin, the available options based on chemical or morphological modification suffer from low yield, high cost, and lack of availability at the required scales. In this study, we adopted a polyhydric-alcohol-based deep eutectic solvent (PA-DES) to directly extract light-color lignin from natural biomass, which is even whiter than native cellulolytic enzyme lignin (CEL). The isolated lignin possessed a high recovery yield (97.36%), regular micro-spherical morphology, enriched beta-ether linkage of 58/100Ar, low phenolic hydroxyl content of 1.25 mmol g-1, minimal carbonyl content of 0.70 mmol g-1, and less condensed structures, thus yielding a lower content of chromophores. This lignin showed excellent sunscreen effects, which could enhance the SPF of a commercial sunscreen from 15 to 40 with only 5 wt% addition. This study can provide essential guidance for the scale-up production of light-color lignin and obtaining near-complete digestible cellulose for further saccharification. Lignocellulose fractionation using a polyhydric-alcohol-based deep eutectic solvent to directly obtain low-chromophore lignin for sunscreen production and digestible solid for outputting fermentable sugars.