Alkali-facilitated deep eutectic solvent for effective bamboo saccharification. (January 2023)

• Record Type: Journal Article
• Authors: Liu, Xuze; Cheng, Jinyuan; Huang, Chen; Wang, Jia; Fang, Guigan; Shen, Kuizhong; Meng, Xianzhi; Ragauskas, Arthur J.
• Is Part Of: Bioresource technology. Volume 367(2023)
• Publication Date: 2023-01
• Subjects: Alkaline deep eutectic solvent pretreatment -- Na2S incorporation -- Biomass fractionation -- Delignification; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2022.128297
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphic abstract: Highlights: A novel alkaline DES using Na2 S as the reinforcer was proposed in this study. The alkaline DES showed excellent delignification and carbohydrates preservation. The alkaline DES realized the full utilization of biomass. Abstract: Herein, a Na2 S promoted deep eutectic solvent (DES) was established to reduce the natural recalcitrance of moso bamboo (MB) and improve the subsequent enzymatic saccharification. It was found that the addition of Na2 S (Choline chloride/Ethylene glycol/Na2 S) dramatically promoted the deconstructions of lignin with highest removal of 74.67 %, but at the same time preserved glucan and hemicellulose to the maximum extent. With the fractionation, the enzymatic saccharification yield of pretreated MB can reach 100 % under the pretreatment condition of 140 °C, and lignin could be readily recovered with a high yield of 81.47 %. The proposed DES is superior to normal alkaline DES in terms of the higher lignin removal and recovery yield, carbohydrate preservation and enzymatic digestibility, which indicated Na2 S as a novel and powerful reinforcer enhancing the DES fractionation efficiency.