Patent · US Expired

Fermentation process for carboxylic acids

US4877731A · kind A · utility

8Cited by

7References

15Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Lorraine Ling · San Jose, US
Thomas K. Ng · Fazendas de Almeirim, PT

Key dates

Filing date	Jun 27, 1988
Grant date	Oct 31, 1989
Priority date	—
Expiry date	Jun 27, 2008

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S435/939
WIPO fieldBiotechnology
WIPO sectorChemistry

Abstract

An improved fermentation process for producing carboxylic acids is disclosed. The improvement comprises growing fungi of the genus Rhizopus in a culture medium containing a carbon source, a nitrogen source and inorganic salts, under conditions of controlled oxygen availability wherein the dissolved oxygen concentration for the cell growth phase is between 80% and 100% and where the dissolved oxygen concentration for the acid production phase is between 30% and 80%.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.