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US 4,776,984 AGranted
Process for the enrichment with .DELTA.6 fatty acids of a mixture of fatty acids
AssigneeNestec S. A.
InventorsHelmut Traitler, Alfred Studer
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AssigneeNestec S. A.
InventorsHelmut Traitler, Alfred Studer
Estimating the term…
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.
A process comprising treating polyunsaturated fatty acids, obtained from seeds of the fruit of the genus Ribes, with urea dissolved in a lower alkanol, in a ratio by weight of fatty acids other than delta 6 polyunsaturated fatty acids to urea of from 1:2.0 to 1:4.5, thereby forming a liquid phase fraction and an insoluble inclusion complex, separating the insoluble inclusion complex from the liquid phase fraction and extracting and collecting fatty acids from the liquid phase fraction.
A process for obtaining gamma-linolenic acid from polyunsaturated fatty acids derived from seeds of fruit of the genus Ribes comprising:
Dependencies are inferred from the claim text.