Process for producing citric acid by fermentation
US3966553A · kind A · utility
11Cited by
2References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 6, 1973 |
| Grant date | Jun 29, 1976 |
| Priority date | — |
| Expiry date | Dec 6, 1993 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/944
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Process for manufacturing citric acid by aerobic culture of yeast strains in a medium containing at least one n-paraffin, comprising adding to the culture medium, after the phase of exponential growth thereof, a nitrogenous heterocyclic organic compound selected from .alpha.-picolinic acid, 2,6-dipicolinic acid, quinaldic acid, bi-pyridine, orthophenanthroline, 8-hydroxyquinoline and 5-hydroxyquinoxaline, at a concentration from 0.5 to 10 g/liter, and controlling the pH value of said medium during said growth phase by addition of sodium or potassium carbonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.