Stabilized cultures of microorganisms
US5637494A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 9, 1994 |
| Grant date | Jun 10, 1997 |
| Priority date | — |
| Expiry date | May 9, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12R2001/225
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Cultures of microorganisms, particularly in freeze dried form, include an ascorbic acid antioxidant and a monocarboxylic .alpha.-amino acid each of which are present at a mass fraction of 0.05 to 0.3. The acid acts as a potentiator for the antioxidant. The cultures are more stable for extended storage, particularly at relatively high temperatures, than unstabilized cultures. Further, additional components include a carbohydrate in an amount of 25 to 45 weight percent, particularly inositol or sucrose, a viscosity inducer and a cryoprotectant. The latter two need not be different materials to the carbohydrate. The invention is suitable for stabilizing cultures of microorganisms such as lactic acid producing strains of Lactobacillus or Streptococcus; and the cultures are useful as additives and forage, especially silage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.