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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Sep 14, 2021
Grant Date -
Jul 9, 2015
app pub date -
Aug 1, 2013
filing date -
Aug 1, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
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 pretreating 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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International Classification(s)
- 2013 Application Filing Year
- C12P Class
- 1593 Applications Filed
- 1388 Patents Issued To-Date
- 87.14 % Issued To-Date
Cited Art Landscape
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- 0 Citation Count
- C12P Class
- 0 % this patent is cited more than
- 4 Age
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