Production of materials rich in conjugated isomers of long chain polyunsaturated fatty acid residues
AssigneeUnilever Patent Holdings B.V.
InventorsKrish Bhaggan, Frederick William Cain, John Bernard Harris, Victoria Taran
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Abstract
The invention concerns an isomerisation process, wherein materials comprising non-congugated long chain polyunsaturated fatty acids are subjected to base in the presence of an alcohol with ≧3 C-atoms and ≧2 OH groups and having ratio C-atoms: OH-groups of ≧1.25. The resulting reaction product, containing the conjugated isomers is obtained in higher yield at lower temperatures and are not contaminated by presence of non food grade solvent.
Claims8
Process for the preparation of materials comprising mainly conjugated isomers of long chain polyunsaturated fatty acids which comprises treating a starting material comprising a free fatty acid composition or an alkyl ester composition thereof, containing at least 25 wt % of at least one isomer other than the conjugated isomers of long chain polyunsaturated fatty acids with a base in a solvent at a temperature between 100° C. and 180° C. wherein the solvent is an alcohol with at least 3 C-atoms and at least two hydroxy groups having a ratio of number of C-atoms:
- number of OH groups of at least 1.25 but less than 3.5, the base being utilized in a concentration of 0.25 mole/l-3.5 mole/l) solvent.
Process for the preparation of materials comprising mainly conjugated isomers of long chain polyunsaturated fatty acids which comprises treating a starting material comprising a free fatty acid composition or an alkyl ester composition thereof, containing at least 25 wt % of at least one isomer other than the conjugated isomers of long chain polyunsaturated fatty acids with a base in a solvent wherein the solvent is an alcohol with at least 3 C-atoms and at least two hydroxy groups having a ratio of number of C-atoms:
- number of OH groups of at least 1.25 but less than 3.5.
Dependencies are inferred from the claim text.