Patent · US Expired

Method of producing L-amino acids by fermentation

US5840551A · kind A · utility

8Cited by

0References

12Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Holger Werning · Duisburg, DE
Harald Voss · Gratwein-Straßengel, AT
Walter Pfefferle · Bodenwerder, DE
Wolfgang Leuchtenberger

Key dates

Filing date	Dec 19, 1996
Grant date	Nov 24, 1998
Priority date	—
Expiry date	Dec 19, 2016

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S435/872
WIPO fieldBiotechnology
WIPO sectorChemistry

Abstract

A method of producing L-amino acids by fermentation. Microorganisms of the genus Corynebacterium which exhibit an auxotrophy relative to an amino acid are used as biocatalysts. The method is characterized in that the carbon source on the one hand and the limiting amino acid on the other hand are fed in two or more different infeed currents to the process. The infeed profiles have, for example, a concave (saccharose) and an exponential (amino acid) form or a convex (saccharose) and likewise a convex (amino acid) form, with specific differing degrees of increase of the currents relative to each other over time.

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