Isolation of lutein from alfalfa
US7109361B2 · kind B2 · utility
5Cited by
9References
70Claims
0Family size
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Key dates
| Filing date | Oct 29, 2003 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Jul 11, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P60/87
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention provides a process for an industrial scale extraction and purification of xanthophylls (e.g., lutein and zeaxanthin) from plant material (e.g., alfalfa or other leafy green crops having high levels of chlorophyll). The process involves harvesting lutein rich alfalfa, extracting an oleoresin from the alfalfa leaves, saponifying the oleoresin, extracting and extracting lutein using a series of solvent extractions specific for oleoresin obtained from alfalfa or other leafy green plants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.