(534b) Application of Protocatechuic Acid-Based Deep Eutectic Solvent for Utiliztion of Engineered Biomass | AIChE

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(534b) Application of Protocatechuic Acid-Based Deep Eutectic Solvent for Utiliztion of Engineered Biomass

Authors 

Ji, A. - Presenter
Wang, Y.
Meng, X., University of Tennessee-Knoxville
Tian, Y., Lawrence Berkeley National Laboratory
Jia, L., SUNY College of Environmental Science and Forestry
Eudes, A., Joint BioEnergy Institute, Lawrence Berkeley National Laboratory
Kim, K. H., University of British Columbia
Pu, Y., Oak Ridge National Laboratory
Leem, G., State University of New York College of Environmental Science and Forestry
Kumar, D., SUNY College of Environmental Science and Forestry
Wie, J. J., Inha University
Ragauskas, A., University of Tennessee
Yoo, C. G., SUNY ESF
To efficiently valorize lignin and achieve a sustainable biorefinery process, genetically engineered sorghum bagasse with altered lignin monomers was pretreated by a novel protocatechuic acid-based deep eutectic solvent (DES). We synthesized the DESs with protocatechuic acid (PCA) and choline chloride (ChCl) and applied this solvent to fractionate sorghum bagasse. The transgenic sorghum bagasse having protocatechuate incooperated lignin was used as a feedstock in this study. Additionally, three-component DESs containing ChCl, PCA and water or ethylene glycol were formed and tested. The fractionated lignin from the black liquor was subjected to hydrothermal treatment to recover protocatechuic acid, and the cellulose-rich pulp was enzymatically hydrolyzed. Structures of isolated lignin before and after hydrothermal treatment were characterized by two-dimensional heteronuclear single quantum (2D HSQC) NMR and gel permeation chromatography, while the liquid products of hydrothermal treatment were analyzed by gas chromatography-mass spectrometry (GC-MS).

Topics 

Sustainability & Environment

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