Methods of processing lignocellulosic biomass using single-stage autohydrolysis and enzymatic hydrolysis with C5 bypass and post-hydrolysis
US11118203B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2013 |
| Grant date | Sep 14, 2021 |
| Priority date | — |
| Expiry date | Aug 1, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E50/10
- WIPO fieldBiotechnology
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.