Recovery of noncaffeine solubles in an extract decaffeination process
US4409253A · kind A · utility
13Cited by
4References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1982 |
| Grant date | Oct 11, 1983 |
| Priority date | — |
| Expiry date | Aug 26, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D473/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An improved extract decaffeination process. Roast coffee extract is contacted with a water-immiscible organic solvent to form decaffeinated extract and caffeine-containing spent solvent. The spent solvent is contacted with water to form decaffeinated spent solvent and caffeine-containing spent water. The spent water can be concentrated to a caffeine content of from about 7 to about 30% by weight. The caffeine in the concentrated spent water can be crystallized out and then separated from the residual spent water. The noncaffeine solubles present in the residual spent water can then be recovered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.