Processes for chromatographic fractionation of fatty acids and their derivatives
US5719302A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 1996 |
| Grant date | Feb 17, 1998 |
| Priority date | — |
| Expiry date | Jan 18, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11C1/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.