Preparation method of non-ester tea polyphenols rich in EGC
US11911433B2 · kind B2 · utility
0Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2022 |
| Grant date | Feb 27, 2024 |
| Priority date | — |
| Expiry date | Jan 17, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2236/53
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A preparation method of non-ester tea polyphenols rich in EGC. Includes leaching wall-broken crushed tea leaves using endogenous hydrolytic enzymes contained in the tea leaves; refining the leached solution after filtration and concentration and purifying it by mobile leaching-water washing; concentrating and drying the purified product to obtain a non-ester tea polyphenols product rich in EGC, wherein the content of tea polyphenols is 90-99.5%, the content of EGC is greater than 80%, and the content of ester catechins EGCG+ECG is less than 10%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.