Process for producing purified tea extract
US9808023B2 · kind B2 · utility
0Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2007 |
| Grant date | Nov 7, 2017 |
| Priority date | — |
| Expiry date | May 21, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA23F3/205
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
Provided is a process for producing a tea extract having a high recovery rate of non-polymer catechins, a low caffeine content and an improved taste and color tone. As one embodiment of this invention provides, there is provided a process for producing a purified tea extract by adsorbing a tea extract on a synthetic adsorbent, bringing an aqueous solution of an organic solvent or a basic aqueous solution into contact with the synthetic adsorbent to elute non-polymer catechins, and then bringing the eluate into contact with activated carbon in an aqueous solution of an organic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.