Process for the enrichment with .DELTA.6 fatty acids of a mixtur

Details Process for the enrichment with .DELTA.6 fatty acids of a mixtur Process for the enrichment with .DELTA.6 fatty acids of a mixtur

1987-02-27

1988-10-11

Warren, Charles F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260419, 260420, C09F 502, C09F 510, C11C 104

Patent

active

047769840

ABSTRACT:
For the selective enrichment with fatty acids, of which the first double bond is in the 6 position, of a starting material containing fatty acids of which the first double bond is in the 6 or 9 position, the starting material is treated with a saturated solution of urea in methanol with predetermined ratios of fatty acids to urea so as to separate the fatty acids, other than the .DELTA.6 polyunsaturated fatty acids in the form of an insoluble inclusion complex.
The enriched fractions obtained may be treated by high-performance liquid chromatography to isolate substantially pure .gamma.-linolenic acid.
The enriched fractions, optionally recombined with glycerol, may be used in medicaments and in nutritive compositions or may even serve as starting product in the synthesis of dihomo-.gamma.-linolenic acid.

REFERENCES:
patent: 2662879 (1953-12-01), Foster et al.
Markley, Fatty Acids-Part 3, 2nd Edition, pp. 2309-2358, (1964).
Traitler et al., CA 102:59384f (1985), Lipids, 1984, 19(12), pp. 923-928.
"Interet D'une Nouvelle Plante Oleagineuse: L'Onarge (Oenothera biennis ou Larmaekiana) Apport en Acide Gamma-Linolenique et Troubles de la Desaturation en Pathologie", Med. et Nut., 1985, T. XXI-No. 2, Paccalin, et al, pp. 132-136.
Progress in the Chemistry of Fats and Other Lipids, "Preparation of Polyunsaturated Fatty Acids from Natural Sources", Privett, vol. IX, pp. 409-452, (1968).

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