Process for recovering unsaturated fatty acids and derivatives t

Details Process for recovering unsaturated fatty acids and derivatives t Process for recovering unsaturated fatty acids and derivatives t

1996-08-16

1998-07-07

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Fatty compounds having an acid moiety which contains the...

554194, C07C 5147, C07C 6756

Patent

active

057771413

ABSTRACT:
A process for the recovery of unsaturated fatty acids with at least 16 carbon atoms in the molecule or a derivative of such a fatty acid from a mixture of fatty acids and/or fatty acid derivatives by column chromatography with supercritical or liquid carbon dioxide as the mobile phase comprises using aluminum oxide, optionally pretreated with alkali, as the stationary phase. The pre-treatment of the aluminum oxide is conveniently effected by contacting the particulate aluminum oxide with an aqueous solution of an alkali metal or alkaline earth metal hydroxide, optionally supplemented with a water-miscible or water-soluble organic solvent, in the pH range of about 10 to about 13 over several hours. The unsaturated fatty acids or fatty acid derivatives produced chromatographically in this manner are suitable as valuable active agents in the fields of nutrition and medicine.

REFERENCES:
patent: 4880543 (1989-11-01), Khosah et al.
patent: 5061505 (1991-10-01), Cully et al.
patent: 5362895 (1994-11-01), Engelhardt et al.
Abstract corresponding to JP 62 292744, 1987.
Kontakte (Darmstadt) 1992 (1), pp. 12-15: "Alkalines-stable Stationary Phases for HPLC (Part 1): Aluspher.RTM.A1".
M. Perrut, LC-GC (Magazine of Liquid and Gas Chromatography ), vol. 6(10), p. 914 (1988).

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