Processes for chromatographic fractionation of fatty acids and their derivatives
AssigneePronova AB
InventorsMichel Perrut, Roger-Marc Nicoud, Harald Breivik
Life of this patent
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Abstract
A process for recovering at least one of purified polyunsaturated fatty acids (PUFA) and polyunsaturated fatty acid mixtures from a feed composition includes a step of (i) treating the composition by either (a) stationary bed chromatography or (b) multistage countercurrent column fractionation in which a solvent is a fluid at supercritical pressure, and recovering at least one PUFA-enriched fraction. The process also includes a step of (ii) subjecting the fraction recovered in the treating step to further fractionation by simulated continuous countercurrent moving bed chromatography, and recovering at least one fraction containing the purified PUFA or the PUFA mixture.
Claims14
A process for recovering one or more purified polyunsaturated fatty acids (PUFA) or polyunsaturated fatty acid mixtures from a feed composition comprising said PUFA or PUFAs, which process comprises the steps of:
- either
- (i) treating said composition by means either of (a) stationary bed chromatography or (b) multistage countercurrent column fractionation in which the solvent is a fluid at supercritical pressure, and recovering one or more PUFA-enriched fractions, and
- (ii) subjecting said PUFA-enriched fraction or fractions recovered in step (i) to further fractionation by means of simulated continuous countercurrent moving bed chromatography and recovering one or more fractions containing purified PUFA or PUFA mixture, or
- (iii) subjecting a feed composition comprising said PUFA or PUFAs to fractionation by means of simulated continuous countercurrent moving bed chromatography in which there is used as the eluent a fluid at a supercritical pressure, and recovering one or more fractions containing purified PUFA or PUFA mixture.
Dependencies are inferred from the claim text.