Process for the production of decaffeinated tea

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

A - Human Necessities

23

F

23/411, 99/82

A23F 3/36 (2006.01) B01D 11/02 (2006.01)

Patent

CA 1248812

ABSTRACT Process for the production of decaffeinated tea The present invention provides a process for the production of decaffeinated tea by extraction with carbon dioxide, which is supercritical with regard to pressure and temperature, in the presence of water, wherein a tea which has been adjusted to a water content of 15 to 50% by weight is first extracted at 50 to 70°C. with moist carbon dioxide at a pressure of from 260 to 350 bar, the caffein is then removed from the caffein-containing carbon dioxide in the same pressure range with active char- coal and thereafter the caffein-free carbon dioxide is recycled over the already extracted tea and the tea is separated from the carbon dioxide and dried. The present invention also provides a device for carrying out this process.

480013

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