Method for selective separation of free-astaxanthin from green algae Haematococcus pluvialis
US7785823B2 · kind B2 · utility
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Key dates
| Filing date | Feb 21, 2007 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Jan 25, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12P23/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There is provided a method of separating free-astaxanthin selectively from green algae and, more particularly, to a method of separating free-astaxanthin selectively from Haematococcus pluvialis, the method comprising: mixing a cell culture containing Haematococcus pluvialis with an alkanic solvent and stirring, thereby obtaining an alkanic solvent extract containing astaxanthin material including free-astaxanthin and astaxanthin ester (step 1); and mixing the alkanic solvent extract with an alcohol and stirring, thereby obtaining an alcoholic extract containing free-astaxanthin (step 2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.