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US 12,404,531 B2Granted
Method for purifying (−)-Ambrox
AssigneeGivaudan SA
InventorsJean-Pierre Barras, Sylvie Morel, Eric Eichhorn
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Abstract
A method for purifying a crude flavor or perfumery or cosmetic ingredient or intermediate, for example crude (−)-Ambrox, comprising a number of washing steps, the products of said method, and uses of said product.
Claims10
A method for purifying a crude flavor or perfumery or cosmetic ingredient or intermediate, wherein the crude flavor or perfumery or cosmetic ingredient or intermediate is in solid form, the method comprising:
- washing with an aqueous acid at a temperature less than the melting point of (−)-Ambrox;
- washing with an aqueous surfactant at a temperature less than the melting point of (−)-Ambrox;
- and
- washing with an aqueous alkali at a temperature less than the melting point of (−)-Ambrox:
- wherein the crude flavor or perfumery or cosmetic ingredient or intermediate is made by a bioconversion process, wherein the crude flavor or perfumery or cosmetic ingredient or intermediate is separated from a bioconversion broth prior to the method of purification;
- and
- wherein the method is a method for purifying crude (−)-Ambrox, crude (−)-Ambra-oxide, crude 3a-ethyl-6,6,9a-trimethyldodecahydronaphtho[2,1-b]furan, or crude (+)-Amberketal.
4 more elements
Dependencies are inferred from the claim text.