Method for obtaining novel lutein-based formulations
US7045643B2 · kind B2 · utility
6Cited by
4References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2002 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Dec 27, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P3/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention describes a method of preparation of formulations of microcrystalline lutein, particularly in the form of esters, which are resistant to oxidation and are soluble in hydrophilic and/or lipophilic media. For these formulations, the esters of lutein are mixed with antioxidants, vegetable oils and/or organic solvents, and this initial mixture is submitted to various stages depending on the type of final formulation required. These formulations are suitable for direct application as colourants in the pharmaceutical, food and cosmetics fields. They can also be used as diet supplements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.