Method for preparing polysaccharide of green tea and cosmetic composition for skin whitening, moisturization and anti-wrinkle effects comprising the polysaccharide
US8835404B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 2009 |
| Grant date | Sep 16, 2014 |
| Priority date | — |
| Expiry date | Jul 20, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/782
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Disclosed is a method for preparing polysaccharides of green tea, and more particularly to a method for preparing polysaccharides of green tea comprising the steps of: a) removing chlorophyll and a low molecular weight polyphenol from green tea powder using a solvent; b) hot-water extracting a water-soluble active ingredient from the green tea residue of step a); and c) separating the polysaccharides of green tea from the hot-water extract of step b) by ultrafiltration and ethanol precipitation. Also, the present invention relates to a cosmetic composition for skin whitening, moisturization and anti-wrinkle effects comprising the polysaccharides of green tea as an effective ingredient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.