Fermentation of trichoderma reesei and apparatus therefor
US4952505A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 8, 1988 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | Aug 8, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/945
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A process for producing enzyme cellulases by the fermentation of Trichoderma reesei in an aqueous nutrient medium containing assimilable sources of cellulose, nitrogen, phosphate, magnesium and iron in the presence of an oxygen containing atmosphere and a fermentation apparatus for the aerobic fermentation of microorganisms in a liquid medium at a pressure in excess of about 7 atmospheres. The method comprises fermenting the Trichoderma reesei at a temperature of between about 26.degree. C. and 31.degree. C. while maintaining the oxygen containing atmosphere at a pressure of about 1 atmosphere until the Trichoderma reesei enter the late stationary growth phase, thereafter, gradually and steadily increasing the pressure of the oxygen containing atmosphere until it is in excess of about 7 atmospheres and culturing the Trichoderma reesei at said increased pressure and at a temperature of between about 40.degree. C. and about 60.degree. C., thereby resulting in the production of enzyme cellulases by the Trichoderma reesei, and recovering the enzyme cellulases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.