Separate recovery of caffeine and coffee solids adsorbed on...

Details Separate recovery of caffeine and coffee solids adsorbed on... Separate recovery of caffeine and coffee solids adsorbed on...

C - Chemistry, Metallurgy

07

D

99/80, 260/242.4

C07D 473/12 (2006.01) A23F 5/22 (2006.01)

Patent

CA 1237130

ABSTRACT SEPARATE RECOVERY OF CAFFEINE AND COFFEE SOLIDS ADSORBED ON ACTIVATED CARBON The present invention relates to a method of separately recovering caffeine and non-caffeine solids adsorbed on activated carbon. Activated carbon containing the adsorbed solids is contacted with an aqueous basic solution to elute the non-caffeine coffee solids. The two components are separated. The activated carbon is subsequently contacted with a concentrated aqueous acidic solution to elute the relatively pure caffeine. The two components are separated. The non-caffeine solids in the basic solution may be re-adsorbed onto the activated carbon. Essentially pure caffeine may be refined from the aqueous acidic solution.

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