Method for isolation of caffeine-free catechins from green tea
US6210679A · kind A · utility
22Cited by
6References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 7, 1999 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Jan 7, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K36/82
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The process of the present invention relates to the isolation and purification of caffeine-free mixtures catechins from various different biomass sources, preferably from green tea leaves. More particularly, the present invention relates to a four-step process whereby highly pure, caffeine-free EGCG is isolated in high yields. These catechins may be used in pharmaceutical, nutraceutical and cosmetic products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.