Caffeine production method
US11252975B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2018 |
| Grant date | Feb 22, 2022 |
| Priority date | — |
| Expiry date | Feb 12, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D473/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides a method for producing caffeine, wherein the method comprises: (a) combining a coffee extract comprising caffeine with an aqueous organic acid; (b) crystallizing the coffee extract and the aqueous organic acid so as to form caffeine-organic acid co-crystals in an aqueous phase; (c) separating the caffeine-organic acid co-crystals from the aqueous phase; and (d) extracting caffeine from the co-crystals obtained in step (c), wherein step (d) comprises placing the co-crystals in an aqueous solution so as to form a caffeine precipitate and a solution comprising the organic acid. Also provided is a method for producing a decaffeinated coffee extract comprising chlorogenic acids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.