文献类型：期刊文献

英文题名：Facile Fractionation of Bamboo Wood Toward Biomass Valorization by p-TsOH-Based Methanolysis Pretreatment

作者：Zhai, Qiaolong[1,2,3,4] Long, Feng[1,2,3,4] Hse, Chung-yun[6] Wang, Fei[1,2,3,4] Shupe, Todd F.[7] Jiang, Jianchun[1,2,3,4] Xu, Junming[1,2,3,4,5]

第一作者：Zhai, Qiaolong

通信作者：Xu, JM[1];Xu, JM[2];Xu, JM[3];Xu, JM[4];Xu, JM[5]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Jiangsu, Peoples R China;[2]Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China;[3]Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Jiangsu, Peoples R China;[4]SFA, Key & Open Lab Forest Chem Engn, Nanjing 210042, Jiangsu, Peoples R China;[5]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing 210037, Jiangsu, Peoples R China;[6]US Forest Serv, USDA, Southern Res Stn, Pineville, LA 71360 USA;[7]Wood Sci Consulting LLC, Baton Rouge, LA 70816 USA

年份：2019

卷号：7

期号：23

起止页码：19213-19224

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000500650400049)】；

基金：The authors would like to thank the financial support provided by the National Natural Science Foundation of China (31530010). Q.Z. (201803270020) would like to acknowledge the fellowship from the China Scholarship Council (CSC).

语种：英文

外文关键词：p-Toluenesulfonic acid; Delignification; Methanolysis; Lignocellulose valorization; Enzymatic hydrolysis

摘要：A mild methanolysis pretreatment strategy was developed with a recyclable acid, p-TsOH, as the catalyst for the fractionation of lignocellulosic biomass toward its main components. Bamboo fiber was fractionated in one step with dissolution of more than 88% lignin and 90% xylan with most of the cellulose (86.8%) retained in pretreated bamboo at mild conditions (110 degrees C, 30 min, and 10% p-TsOH). Enzymatic hydrolysis of the cellulose-rich fraction was enhanced to 89.2% at an enzyme loading of 15 FPU g(-1) substrate, nearly 4-fold higher than the untreated bamboo. Most of the xylan (hemicellulose) and lignin in the biomass were extracted and dissolved into the spent liquor. The extracted lignin had higher purity (>94%) and a moderate and homogeneous molecular weight, which could be adapted to add value to lignin. p-TsOH can be effectively recovered by recrystallization technology after concentrating the spent liquor. Hemicellulose (xylan) was transformed into methyl xyloside and furfural during the pretreatment. Overall, the described process showed practical significance for the effective fractionation and comprehensive utilization of lignocellulosic biomass components.