METHODS OF PROCESSING LIGNOCELLULOSIC BIOMASS USING SINGLE-STAGE AUTOHYDROLYSIS AND ENZYMATIC HYDROLYSIS WITH C5 BYPASS AND POST-HYDROLYSIS
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United States of America Patent
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Issued Date -
Mar 28, 2024
app pub date -
Nov 29, 2023
filing date -
Aug 1, 2012
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Abstract
The invention relates, in general, to methods of processing Lignocellulosic biomass to fermentable sugars and to methods that rely on hydrothermal pretreatment. Xylose monomer yields comparable to those achieved using two-stage pretreatments can be achieved from soft Lignocellulosic biomass feedstocks by pretreasting to very low severity in a single-stage pressurized hydrothermal pretreatment, followed by enzymatic hydrolysis to release xylose retained in the solid state. In some embodiments, pretreated biomass is separated into a solid fraction and a liquid fraction, the solid fraction subjected to enzymatic hydrolysis, and the separated liquid fraction subsequently mixed with the hydrolysed solid fraction.
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