Process for the direct decaffeination of aqueous coffee...

Details Process for the direct decaffeination of aqueous coffee... Process for the direct decaffeination of aqueous coffee...

A - Human Necessities

23

F

99/80

A23F 5/18 (2006.01) A23F 5/22 (2006.01) B01D 11/02 (2006.01)

Patent

CA 1132836

ABSTRACT OF THE DISCLOSURE A process for the direct decaffeination of aqueous coffee extract solutions by contacting the surface of a thin film of an aqueous coffee extract solution with carbon dioxide under supercritical conditions of temperature and pressure to thereby remove the caffeine into the CO2 and directly recover the aqueous coffee extract solution sub- stantially free from caffeine. The contacting of the aqueous coffee extract solution and the CO2 is preferably effected by passing the aqueous coffee extract solution downwardly through a packed column, while passing the CO2 upwardly in countercurrent contact therewith.

321421

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