Back to results
US 4,904,773 AGranted
Process for extracting methylxanthines from aqueous solutions containing same
AssigneeAllelix Inc.
InventorsErnest K. Yu, Wayne R. Bellamy, Alexander M. Sills
Life of this patent
Estimating the term…
Abstract
Methylxanthines such as caffeine are removed from aqueous solution by contact with cyclodextrin. A decaffeination process using selected cyclodextrin species is particularly disclosed.
Claims26
A process for treating an aqueous solution containing a methylxanthine, which comprises the steps of
- (1) contacting said aqueous solution with an effective amount of cyclodextrin to produce cyclodextrin-methylxanthine complexes and a treated solution, said treated solution comprising less than 80% of the methylxanthine in said aqueous solution;
- and
- (2)recovering said treated solution.
Dependencies are inferred from the claim text.