Switchable ionic liquids for biomass pretreatment and enzymatic hydrolysis
Abstract
In one aspect, the present invention provides a method for preparing a sugar composition. The method includes: forming a mixture including polysaccharide biomass and an ionic liquid solution, wherein the ionic liquid solution contains water and an ionic liquid, and wherein the ionic liquid contains a dicarboxylic acid anion and a cation. The pH of the mixture is greater than or equal to about 10, and the molar ratio of the dicarboxylic acid anion to the cation is at least about 1:2. The method further includes: maintaining the mixture under conditions sufficient to dissolve at least a portion of the polysaccharide present in the polysaccharide biomass; reducing the pH of the mixture containing the dissolved polysaccharide to at least about 7; adding at least one glycoside hydrolase to the mixture having the reduced pH.
- Inventors:
- Issue Date:
- Research Org.:
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1840440
- Patent Number(s):
- 11118204
- Application Number:
- 15/523,355
- Assignee:
- National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08H - DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
C - CHEMISTRY C12 - BIOCHEMISTRY C12P - FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE {
- DOE Contract Number:
- AC02-05CH11231
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 10/30/2015
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Liszka, Michael, Sale, Kenneth, and Simmons, Blake A. Switchable ionic liquids for biomass pretreatment and enzymatic hydrolysis. United States: N. p., 2021.
Web.
Liszka, Michael, Sale, Kenneth, & Simmons, Blake A. Switchable ionic liquids for biomass pretreatment and enzymatic hydrolysis. United States.
Liszka, Michael, Sale, Kenneth, and Simmons, Blake A. Tue .
"Switchable ionic liquids for biomass pretreatment and enzymatic hydrolysis". United States. https://www.osti.gov/servlets/purl/1840440.
@article{osti_1840440,
title = {Switchable ionic liquids for biomass pretreatment and enzymatic hydrolysis},
author = {Liszka, Michael and Sale, Kenneth and Simmons, Blake A.},
abstractNote = {In one aspect, the present invention provides a method for preparing a sugar composition. The method includes: forming a mixture including polysaccharide biomass and an ionic liquid solution, wherein the ionic liquid solution contains water and an ionic liquid, and wherein the ionic liquid contains a dicarboxylic acid anion and a cation. The pH of the mixture is greater than or equal to about 10, and the molar ratio of the dicarboxylic acid anion to the cation is at least about 1:2. The method further includes: maintaining the mixture under conditions sufficient to dissolve at least a portion of the polysaccharide present in the polysaccharide biomass; reducing the pH of the mixture containing the dissolved polysaccharide to at least about 7; adding at least one glycoside hydrolase to the mixture having the reduced pH.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 14 00:00:00 EDT 2021},
month = {Tue Sep 14 00:00:00 EDT 2021}
}
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