Yeast strain having improved capability for fermenting xylose in the presence of acetic acid
US11186814B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2020 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Feb 18, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E50/10
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The invention relates to a method for selecting a yeast strain having improved capability for fermenting a pentose, advantageously xylose, in the presence of organic acid, advantageously acetic acid, in non-dissociated form, in which at least one yeast strain that is capable of fermenting said pentose is consecutively cultured in the following two media: a first growth medium comprising said pentose as the only carbon source and said organic acid in non-dissociated form; a second growth medium comprising another carbon source as the only carbon source, advantageously glucose, free of said organic acid in non-dissociated form, the consecutive culture in at least said two growth media being repeated at least twice, in the presence of rising concentrations of organic acid in non-dissociated form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.