The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 16, 1993
Filed:
Mar. 15, 1990
Hans Kulla, Visp, CH;
Pavel Lehky, Naters, CH;
Lonza Ltd., Gampel/Valais, CH;
Abstract
Process for the production of L-carnitine utilizing a microorganism. The microorganism is cultivated with crotonobetaine and/or .gamma.-butyrobetaine in the presence of a growth substrate. The enriched L-carnitine is isolated. The microorganisms used are those which are capable of producing L-carnitine while not catabolizing it from crotonobetaine and/or .gamma.-butyrobetaine. The microorganisms can be obtained by the following selection method. Microorganisms which grow with betaine, .gamma.-butyrobetaine, crotonobetaine and L-carnitine as the C- and N-source are mutated in the conventional manner. From the culture obtained by cultivating of the mutated microorganisms, those microorganisms are selected which are stable, do not catabolize L-carnitine and do not grow on L-carnitine, crotonobetaine and .gamma.-butyrobetaine, but grow with betaine.