Biorefinery process for extraction, separation and recovery of fermentable saccharides, other useful compounds, and yield of improved lignocellulosic material from plant biomass
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United States of America Patent
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Apr 18, 2017
Grant Date -
Jun 12, 2014
app pub date -
Dec 19, 2013
filing date -
Nov 30, 2009
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Abstract
Non-food plant biomass is subjected hot-water extraction in a pressurized vessel at an elevated temperature up to about 250° C. without addition of reagents, to yield an aqueous extract containing hemicellulosic components and a lignocellulosic residue. The process leaves the lignocellulose substantially intact, but with the hemicellulosic content largely removed. The separated aqueous extract or liquor is concentrated and purified, and long-chain sugars are reduced into monomer saccharides. The lignocellulosic residue may be further processed, to yield a useful fibrous material that is highly resistant to sorption of water. This material may be used for composite materials that resist water degradation, or may be used to produce a higher thermal-yield, water-resistant fuel, or may be used as bioconversion feedstock for producing high-value, lignocellulosic derivatives.
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