Enhanced bioethanol production from sugarcane bagasse: combination of liquid hot water and deep eutectic solvent pretreatment for optimized enzymatic saccharification

作     者：Xian, Xiaoling Li, Biying Feng, Shiyong Huang, Jiale Fu, Xinyuan Wu, Ting Lin, Xiaoqing 

作者机构：Guangdong Univ Technol Sch Chem Engn & Light Ind Guangdong Prov Key Lab Plant Resources Biorefinery Guangzhou 510006 Peoples R China 

出 版 物：《FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING》 (化学科学与工程前沿（英文版）)

年 卷 期：2024年第18卷第8期

页      面：85-0页

核心收录：

学科分类：0817[工学-化学工程与技术] 08[工学] 

基　　金：National Natural Science Foundation of China [21978053  51508547] 

主　　题：sugar cane bagasse synergistic pretreatment enzymatic saccharification ethanol PSEUDO-LIGNIN FORMATION CANE BAGASSE BIOFUELS 

摘      要：In the present study, a sustainable pretreatment methodology combining liquid hot water and deep eutectic solvent is proposed for the efficient fractionation of hemicellulose, cellulose, and lignin from sugarcane bagasse, thereby facilitating the comprehensive utilization of both C5 and C6 sugars. The application of this combined pretreatment strategy to sugarcane bagasse led to notable enhancements in enzymatic saccharification and subsequent fermentation. Experiment results demonstrate that liquid hot water-deep eutectic solvent pretreatment yielded 85.05 +/- 0.66 gL-1 of total fermentable sugar (glucose: 60.96 +/- 0.21 gL-1, xylose: 24.09 +/- 0.87 gL-1) through enzymatic saccharification of sugarcane bagasse. Furthermore, fermentation of the pretreated sugarcane bagasse hydrolysate yielded 34.33 +/- 3.15 gL-1 of bioethanol. These findings confirm the effectiveness of liquid hot water-deep eutectic solvent pretreatment in separating lignocellulosic components, thus presenting a sustainable and promising pretreatment method for maximizing the valuable utilization of biomass resources.