Process and apparatus for the production of decaffeinated tea

Details Process and apparatus for the production of decaffeinated tea Process and apparatus for the production of decaffeinated tea

A - Human Necessities

23

F

99/82

A23F 3/36 (2006.01) A23F 3/42 (2006.01)

Patent

CA 1318174

ABSTRACT OF THE DISCLOSURE By the extraction with CO2 at 60 to 150 bar and 20 to 70°C, an aroma-enriched fraction is taken from the moistened black tea, said fraction being added again to already decaffeinated and dried tea. Decaffeination starts after the aroma fraction has been obtained by pumping carbon dioxide at a pressure of between 150 to 500 bar and a temperature of between 10 to 100°C through a bulk of moistened tea. The solvent charged with caffeine is passed over an adsorber or purified by reduction of density.

552667

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