Patent · US Active

Sulfite pretreatment for biorefining biomass

US9090915B2 · kind B2 · utility

11Cited by

20References

11Claims

0Family size

Assignees

Wisconsin Alumni Research Foundation · US
The United States of America, as represented by the Secretary of Agriculture · US

Inventors

Gaosheng Wang · Tianjin, CN
Xuejun Pan · Fitchburg, US
Jun Zhu · Madison, US
Roland Gleisner · Jefferson, US

Key dates

Filing date	Apr 17, 2009
Grant date	Jul 28, 2015
Priority date	—
Expiry date	Apr 16, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W30/64
WIPO fieldBiotechnology
WIPO sectorChemistry

Abstract

The present invention relates to a method using sulfite pretreatment to overcome recalcitrance of lignocellulose (SPORL). More specifically, it relates to a sulfite-based chemical process for pretreating biomass in solutions to reduce access barriers of enzymes to the lignocellulose, resulting in efficient conversion through enzymatic saccharification.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.