Method for the production of alcohol from a pretreated lignocellulosic feedstock
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United States of America Patent
Stats
-
Mar 17, 2015
Grant Date -
Feb 5, 2009
app pub date -
Jul 29, 2008
filing date -
Aug 2, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A process for the production of glucose from a pretreated lignocellulosic feedstock is provided. The method comprises enzymatically hydrolyzing the pretreated lignocellulosic feedstock with cellulase enzymes to produce a hydrolyzate slurry comprising glucose and unhydrolyzed cellulose and fermenting the hydrolyzate slurry in a fermentation reaction to produce a fermentation broth comprising alcohol. A process stream is obtained comprising unhydrolyzed cellulose, which is then subjected to a denaturing step, preferably comprising exposing the unhydrolyzed cellulose to elevated temperatures, thereby producing a heat-treated stream comprising the unhydrolyzed cellulose. The heat-treated stream comprising unhydrolyzed cellulose is then further hydrolyzed with cellulase enzymes to hydrolyze the cellulose to glucose.
First Claim
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International Classification(s)
- 2008 Application Filing Year
- C07H Class
- 2142 Applications Filed
- 911 Patents Issued To-Date
- 42.54 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 11 Citation Count
- C07H Class
- 90.56 % this patent is cited more than
- 10 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 17, 2026 |
