Process for preparing compositions containing unsaturated lactones, products produced thereby and organoleptic uses of said products
US5110953A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1990 |
| Grant date | May 5, 1992 |
| Priority date | — |
| Expiry date | Dec 7, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12P17/02
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Described is a process for the preparation of compositions of matter containing unsaturated lactones defined according to the generic structure: ##STR1## wherein R represents C.sub.6 alkyl or alkenyl; and X represents C.sub.2, C.sub.4 or C.sub.6 alkylene or alkenylene; with the provisos that R is C.sub.6 alkyl when X is alkenylene and R is C.sub.6 alkenyl when X is alkylene by means of the sequential steps of (i) fermentation of castor oil or ricinoleic acid using a microorganism selected from the group consisting of: PA1 Candida petrophilum, ATCC 20226; PA1 Candida oleophila, ATCC 20177; PA1 Candida sp., ATCC 20504; and PA1 Candida sake, ATCC 28137 whereby gamma hydroxydecanoic acid and a mixture of other acids defined according to the generic structure: ##STR2## is formed wherein Y represents an oxo-saturated, oxo-unsaturated or di-unsaturated C.sub.9, C.sub.11 or C.sub.13 moiety according to the reaction: ##STR3## (ii) lactonization of the resulting gamma hydroxydecanoic acid by means of simultaneous acidification and heating according to the reaction: ##STR4## and (iii) lactonization (via distillation) of one or more of the resulting acids defined according to the structure: ##…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.