Pentose fermentation by recombinant zymomonas
US5712133A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1995 |
| Grant date | Jan 27, 1998 |
| Priority date | — |
| Expiry date | Apr 14, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E50/10
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The invention relates to microorganisms which normally do not ferment pentose sugar and which are genetically altered to ferment pentose sugar to produce ethanol, and fermentation processes utilizing the same. Examples include Zymomonas mobilis which has been transformed with combinations of E. coli genes for xylose isomerase, xylulokinase, transaldolase, transketolase, L-arabinose isomerase, L-ribulokinase, and L-ribulose 5-phosphate 4-epimerase. Expression of the added genes are under the control of Zymomonas mobilis promoters. These newly created microorganisms are useful for fermenting pentoses and glucose, produced by hydrolysis of hemicellulose and cellulose, to produce ethanol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.