Concentrate of polyunsaturated fatty acid ethyl esters and preparation thereof
US5679809A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1995 |
| Grant date | Oct 21, 1997 |
| Priority date | — |
| Expiry date | Apr 6, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P3/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A composition concentrated in ethyl esters of polyunsaturated fatty acids is prepared by mixing a refined oil rich in polyunsaturated fatty acids with ethanol in the presence of a catalyst to obtain an ethanolyzate containing a glycerol phase and fatty acid ethyl ester phase. The fatty acid ethyl ester phase is separated from the glycerol phase and mixed with urea and ethanol to form a mixture, which is cooled to form a liquid phase containing fatty acid ethyl esters and a solid phase containing insoluble inclusion complexes. The liquid phase is separated from the solid phase to obtain a fraction enriched in ethyl esters of polyunsaturated fatty acids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.