Process for the manufacture of a composition containing at least one xanthophyll
US7812198B2 · kind B2 · utility
4Cited by
27References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2007 |
| Grant date | Oct 12, 2010 |
| Priority date | — |
| Expiry date | Jun 12, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/16
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the manufacture of a composition containing at least one xanthophyll selected from the group consisting of lutein and zeaxanthin, said process comprising the steps of providing an extract of Marigold flower containing the xanthophyll(s) in esterified form; saponifying the Marigold flower extract and isolating the xanthophyll(s). The process according to the invention is characterized in that the step of saponifying the Marigold flower extract is carried out in the presence of a quaternary ammonium base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.