Investigation of the effects of ternary deep eutectic solvent composition on pretreatment of sorghum stover
Investigation of the effects of ternary deep eutectic solvent composition on pretreatment of sorghum stover
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DOI：
10.1002/aic.18227
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发表时间：
2023-08-28
期刊：
影响因子：
3.7
通讯作者：
Yoo，Chang Geun
中科院分区：
文献类型：
--
作者：
Wang，Yunxuan;Ryu，Jiae;Yoo，Chang Geun
生物质衍生的低共熔溶剂（DES）由于其温和的加工条件、易于合成和来自生物质的绿色溶剂组分而被引入作为有前景的预处理和分馏溶剂。在最近的DES研究中，基于溶剂的第三组分如水、乙醇等改善了典型二元DES的可加工性。然而，这些组成部分的影响还没有得到很好的理解。在此，将两种溶剂基组分（包括水和乙二醇）应用于基于3，4-二羟基苯甲酸（DHBA）的DES系统，以提高富含纤维素的级分的转化效率和木质素级分的性质。化学组成，酶消化率，纤维素的聚合度和木质素的物理化学性质被用来评估每个第三组分对生物质加工的影响。与二元ChCl-DHBA DES相比，三元ChCl-DHBA DES在脱木质素、可发酵糖生产和木质素中β-O-4醚键的保留方面表现出更好的性能。
Biomass‐derived deep eutectic solvents (DESs) have been introduced as promising pretreatment and fractionation solvents because of their mild processing conditions, easy synthesis, and green solvent components from biomass. In recent DES studies, solvent‐based third constituents like water, ethanol, and others improve the processibility of typical binary DESs. However, the impacts of these components are not well understood. Here, two solvent‐based constituents, including water and ethylene glycol, were applied to 3,4‐dihydroxybenzoic acid (DHBA)‐based DES system for improving the conversion efficiency of cellulose‐rich fraction and the properties of lignin fraction. Chemical composition, enzymatic digestibility, degree of polymerization of cellulose and physicochemical properties of lignin were used to evaluate the impact of each third constituent on biomass processing. Ternary ChCl‐DHBA DESs exhibited better performances in delignification, fermentable sugar production, and preservation of β‐O‐4 ether linkage in lignin compared with binary ChCl‐DHBA DES.