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Title: Facilitating enzymatic hydrolysis with a novel guaiacol-based deep eutectic solvent pretreatment

Abstract

In this work, we established a novel deep eutectic solvent (DES) using lignin-derived guaiacol as hydrogen bond donor (HBD). The sole ChCl/guaiacol system was found to be inefficient for the fractionation of wheat straw (WS), while the incorporation of trace AlCl3 significantly facilitated the degradation of hemicellulose and lignin, resulting in a complete enzymatic digestibility of the pretreated WS. Further, this study revealed that the DES-degraded lignin was readily precipitated during the washing process, and thus hindered the enzymatic hydrolysis of poplar and bamboo (with hydrolysis yield of 42.03% and 71.67%, respectively). Alkali washing offers a possible approach to remove the precipitated lignin, after which a near 100% hydrolysis yield was also obtained for poplar and bamboo.

Authors:
 [1];  [2];  [2];  [3];  [4];  [3];  [5]; ORCiD logo [6]
  1. Jiangsu Province Key Lab. of Biomass Energy and Materials, Nanjing (China); Nanjing Forestry Univ. (China); Univ. of Tennessee, Knoxville, TN (United States)
  2. Jiangsu Province Key Lab. of Biomass Energy and Materials, Nanjing (China)
  3. Nanjing Forestry Univ. (China)
  4. Univ. of Tennessee, Knoxville, TN (United States)
  5. Jiangsu Province Key Lab. of Biomass Energy and Materials, Nanjing (China); Nanjing Forestry Univ. (China)
  6. Univ. of Tennessee, Knoxville, TN (United States); The Univ. of Tennessee Inst. of Agriculture, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE; National Natural Science Foundation of China for Youth; China Postdoctoral Science Foundation
OSTI Identifier:
1769227
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Bioresource Technology
Additional Journal Information:
Journal Volume: 326; Journal ID: ISSN 0960-8524
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; Deep eutectic solvent; Guaiacol; Enzymatic hydrolysis

Citation Formats

Huang, Chen, Zhan, Yunni, Cheng, Jinyuan, Wang, Jia, Meng, Xianzhi, Zhou, Xuelian, Fang, Guigan, and Ragauskas, Arthur J. Facilitating enzymatic hydrolysis with a novel guaiacol-based deep eutectic solvent pretreatment. United States: N. p., 2021. Web. doi:10.1016/j.biortech.2021.124696.
Huang, Chen, Zhan, Yunni, Cheng, Jinyuan, Wang, Jia, Meng, Xianzhi, Zhou, Xuelian, Fang, Guigan, & Ragauskas, Arthur J. Facilitating enzymatic hydrolysis with a novel guaiacol-based deep eutectic solvent pretreatment. United States. https://doi.org/10.1016/j.biortech.2021.124696
Huang, Chen, Zhan, Yunni, Cheng, Jinyuan, Wang, Jia, Meng, Xianzhi, Zhou, Xuelian, Fang, Guigan, and Ragauskas, Arthur J. Tue . "Facilitating enzymatic hydrolysis with a novel guaiacol-based deep eutectic solvent pretreatment". United States. https://doi.org/10.1016/j.biortech.2021.124696. https://www.osti.gov/servlets/purl/1769227.
@article{osti_1769227,
title = {Facilitating enzymatic hydrolysis with a novel guaiacol-based deep eutectic solvent pretreatment},
author = {Huang, Chen and Zhan, Yunni and Cheng, Jinyuan and Wang, Jia and Meng, Xianzhi and Zhou, Xuelian and Fang, Guigan and Ragauskas, Arthur J.},
abstractNote = {In this work, we established a novel deep eutectic solvent (DES) using lignin-derived guaiacol as hydrogen bond donor (HBD). The sole ChCl/guaiacol system was found to be inefficient for the fractionation of wheat straw (WS), while the incorporation of trace AlCl3 significantly facilitated the degradation of hemicellulose and lignin, resulting in a complete enzymatic digestibility of the pretreated WS. Further, this study revealed that the DES-degraded lignin was readily precipitated during the washing process, and thus hindered the enzymatic hydrolysis of poplar and bamboo (with hydrolysis yield of 42.03% and 71.67%, respectively). Alkali washing offers a possible approach to remove the precipitated lignin, after which a near 100% hydrolysis yield was also obtained for poplar and bamboo.},
doi = {10.1016/j.biortech.2021.124696},
journal = {Bioresource Technology},
number = ,
volume = 326,
place = {United States},
year = {Tue Jan 12 00:00:00 EST 2021},
month = {Tue Jan 12 00:00:00 EST 2021}
}

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