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:
Jun. 01, 1993
Filed:
Jul. 07, 1992
Unilever Patent Holdings B.V., Rotterdam, NL;
Abstract
The invention provides a process for producing delta-lactones useful for incorporation in flavourings and fragrances, wherein a micro-organism which is preferably acceptable for making 'food grade' products and which does not metabolize delta-lactones, is cultured aerobically in a culture medium containing as the substrate, an 11-hydroxy fatty acid having an odd number .gtoreq.5 of carbon atoms between the carboxyl group and the carbon atom carrying the hydroxy group. The preferred micro-organism is a Saccharomyces cerevisiae species. The delta-hydroxy-alkanoic acid reaction product of the process is lactonized either in the fermentation broth or after separation therefrom. Especially suitable is 11-hydroxy palmitic acid. The hydroxy fatty acid may be added either pure or as the mixture obtained by hydrolysis of an ester thereof. Enzymatic hydrolysis of such ester may be done in situ in the fermentation broth.