Methods of saponifying xanthophyll esters and isolating xanthophylls
US8716533B2 · kind B2 · utility
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35References
34Claims
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Key dates
| Filing date | May 28, 2010 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | May 28, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/16
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
This invention relates to a practical and effective process for converting esterified xanthophylls, including zeaxanthin, to non-esterified xanthophylls through saponification. In addition, the invention provides a process for obtaining esterified zeaxanthin in high yields and purities, isolating the xanthophylls from interfering substances such as waxes, oils, and fats. A product of this process is a zeaxanthin rich substrate that is suitable for use in foods, nutritional supplements, cosmetics, pharmaceuticals and related products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.