Improvements In Biomass Fermentation into Ethanol
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United States of America Patent
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Issued Date -
Feb 22, 2024
app pub date -
Aug 18, 2023
filing date -
Aug 19, 2022
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Abstract
A method of obtaining ethanol from a lignocellulosic biomass comprises delignification of a lignocellulosic biomass using a modified Caro's acid. Next a solid portion of the delignification reaction mixture is recovered wherein the solid portion comprises a substantially hemicellulose-free cellulosic component which includes at most, up to 15% w/w hemicellulose. Next, the recovered solid portion of the resulting reaction mixture is exposed to an enzyme mix comprising cellulase enzymes to create a saccharification system that breaks down the cellulose into a saccharified composition such as oligosaccharides. The saccharified composition is then fed to an organism, such as yeast, with the ability to ferment sugars into ethanol.
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