文献类型：期刊文献

英文题名：5-Sulfosalicylic acid as an acid hydrotrope for the rapid and green fractionation of woody biomass

作者：Zhai, Qiaolong[1] Han, Shuangmei[1] Hse, Chung-Yun[3] Jiang, Jianchun[1,2] Xu, Junming[1,2]

第一作者：Zhai, Qiaolong

通信作者：Xu, JM[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat,SFA, Natl Engn Lab Biomass Chem Utilizat,Key & Open La, Nanjing 210042, Peoples R China;[2]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing, Peoples R China;[3]US Forest Serv, USDA, Southern Res Stn, Pineville, LA 71360 USA

年份：2022

卷号：177

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20215211384288);Scopus(收录号：2-s2.0-85121658370);WOS:【SCI-EXPANDED(收录号:WOS:000736986000003)】；

基金：The authors would like to thank the financial support provided by the National Natural Science Foundation of China (31890773) .

语种：英文

外文关键词：Acid hydrotrope; Fractionation; Delignification; Saccharification; 5-Sulfosalicylic acid

摘要：This study reported that 5-sulfosalicylic acid (5-SSA), a solid acid with hydrotropic properties, could efficiently and rapidly fractionate poplar biomass in an aqueous solution at mild conditions. The experimental results showed that 5-SSA-treatment could deconstruct the biomass recalcitrant intercellular structure and has excellent potential in lignin and hemicellulose dissolution and glucose release through subsequent enzymatic hydrolysis. Under the optimum conditions (80 wt% aqueous 5-SSA solution, 110 degrees C, and 60 min), a lignin removal rate of approximately 69.97%, cellulose recovery yield of more than 80.18% saccharification yield of 76.1% were achieved. 5-SSA acted as a catalyst to depolymerize lignin and hemicellulose by cleaving ether bonds and served as a solvent to dissolve lignin macromolecules by forming 5-SSA clusters and aggregates in water during fractionation. Density functional theory (DFT) indicated that strong H-bonding interactions between 5-SSA and lignin fragments contributed to the breakage of H-bonding network between lignin fragments.