Investigation of the effects of ternary deep eutectic solvent composition on pretreatment of sorghum stover

Author:

Wang Yunxuan12ORCID,Ryu Jiae1ORCID,Kim Kwang Ho3ORCID,Meng Xianzhi2ORCID,Pu Yunqiao45ORCID,Tian Yang67,Eudes Aymerick67ORCID,Leem Gyu89ORCID,Ragauskas Arthur J.2510ORCID,Yoo Chang Geun19ORCID

Affiliation:

1. Department of Chemical Engineering State University of New York Environmental Science and Forestry Syracuse New York USA

2. Department of Chemical & Biomolecular Engineering University of Tennessee‐Knoxville Knoxville Tennessee USA

3. Clean Energy Research Center Korea Institute of Science and Technology Seoul Republic of Korea

4. Biosciences Division Oak Ridge National Laboratory Oak Ridge Tennessee USA

5. Joint Institute for Biological Sciences Oak Ridge National Laboratory Oak Ridge Tennessee USA

6. Environmental Genomics and Systems Biology Division Lawrence Berkeley National Laboratory Berkeley California USA

7. Joint BioEnergy Institute Emeryville California USA

8. Department of Chemistry State University of New York Environmental Science and Forestry Syracuse New York USA

9. The Michael M. Szwarc Polymer Research Institute Syracuse New York USA

10. Center of Renewable Carbon, Department of Forestry, Wildlife, and Fisheries University of Tennessee Institute of Agriculture Knoxville Tennessee USA

Abstract

AbstractBiomass‐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.

Funder

National Institute of Food and Agriculture

National Science Foundation

Publisher

Wiley

Subject

General Chemical Engineering,Environmental Engineering,Biotechnology

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