Water soluble tea extracts
US5196214A · kind A · utility
2Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 6, 1991 |
| Grant date | Mar 23, 1993 |
| Priority date | — |
| Expiry date | Dec 6, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12Y302/01004
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
To increase the yield of soluble solids obtained from tea leaves for preparing instant teas, spent tea residues obtained from tea leaves extracted by a hot aqueous medium are hydrolyzed with cellulase in water to obtain an aqueous extract containing soluble hydrolyzed spent tea residue. To increase yield further, insoluble residue separated from the extract obtained from the cellulase hydrolysis is hydrolyzed with a protease in water to obtain an extract containing further soluble hydrolyzed spent tea residue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.