Alkali-facilitated deep eutectic solvent for effective bamboo saccharification

Liu, Xuze; Cheng, Jinyuan; Huang, Chen; Wang, Jia; Fang, Guigan; Shen, Kuizhong; Meng, Xianzhi; Ragauskas, Arthur J.

doi:10.1016/j.biortech.2022.128297

Alkali-facilitated deep eutectic solvent for effective bamboo saccharification

Journal Article · Wed Nov 09 23:00:00 EST 2022 · Bioresource Technology

DOI:https://doi.org/10.1016/j.biortech.2022.128297· OSTI ID:1906565

Liu, Xuze ^[1]; Cheng, Jinyuan ^[1]; Huang, Chen ^[1]; Wang, Jia ^[2]; Fang, Guigan ^[1]; Shen, Kuizhong ^[1]; Meng, Xianzhi ^[3]; Ragauskas, Arthur J. ^[4]

Chinese Academy of Forestry, Nanjing (China)
Nanjing Forestry Univ. (China)
Univ. of Tennessee, Knoxville, TN (United States)
Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

In this report, a Na₂S 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 Na₂S (Choline chloride/Ethylene glycol/Na₂S) 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 Na₂S as a novel and powerful reinforcer enhancing the DES fractionation efficiency.

View Accepted Manuscript (DOE)

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE; Jiangsu Province Key Laboratory of Biomass Energy and Materials; National Natural Science Foundation of China

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1906565

Journal Information:: Bioresource Technology, Journal Name: Bioresource Technology Journal Issue: 1 Vol. 367; ISSN 0960-8524

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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