文献类型：期刊文献

英文题名：Facile and rapid fractionation of bamboo wood with a p-toluenesulfonic acid-based three-constituent deep eutectic solvent

作者：Zhai, Qiaolong[1] Long, Feng[1] Jiang, Xia[1] Hse, Chung-yun[3] Jiang, Jianchun[1] Xu, Junming[1,2]

第一作者：Zhai, Qiaolong

通信作者：Xu, JM[1]

机构：[1]Chinese Acad Forestry, Key & Open Lab Forest Chem Engn SFA, Natl Engn Lab Biomass Chem Utilizat, Inst Chem Ind Forest Prod,Key Lab Biomass Energy, Nanjing 210042, Jiangsu, 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：2020

卷号：158

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000595042200002)】；

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：Pretreatment; Delignification; Three-constituent deep eutectic solvent; p-toluenesulfonic acid; Bamboo

摘要：Here, we report a strategy with the application of p-toluenesulfonic acid (p-TsOH) based three-constituent deep eutectic solvent (3c-DES) for the efficient fractionation of bamboo wood towards its main components. Three kinds of deep eutectic solvents (DESs), including choline chloride (ChCl)/ ethylene glycol (EG)/p-TsOH, tetrabutylammonium chloride (N4Cl)/EG/p-TsOH and tetrapmpylammonium chloride (N3Cl) /EG/ p-TsOH, were facilely prepared and assessed for the pretreatment of bamboo wood. ChCl-EG-p-TsOH (molar ratio of 1:0.5:1) was found to be the most effective, evidenced by more than 93.36% xylan and 90.32% lignin removals with most of the cellulose (86.73%) retained in the pretreated bamboo in a short time of 10 min at 100 degrees C and a 10 wt. % solid loading, which significantly improved delignification by more than 85% compared with that of using ChCl-EG (molar ratio of 1:2) as a two-constituent at the same conditions. The 3c-DES pretreatment resulted in the desirable deconstruction of the recalcitrant of cell walls in woody biomass, evidenced by the higher glucose yield of 90.2% by the enzymatic hydrolysis of the cellulose-rich substrate, which was nearly four-fold higher than that of the untreated bamboo. The extracted lignin showed high purity (95%) with a moderate and homogeneous molecular weight, showing promising potential applications in the downstream production of biochemicals and biomaterials. Furthermore, the 3c-DES exhibited excellent recoverability by evaluating the fractionation efficiency and enzymatic hydrolysis performance with the recycled DES. The results from this study demonstrated that p-TsOH-based 3c-DES showed practical significance for the fast and effective fractionation of woody biomass for high-quality components.