Process for the decaffeination of tea

Details Process for the decaffeination of tea Process for the decaffeination of tea

1989-03-20

1990-12-11

Golian, Joseph

Food or edible material: processes, compositions, and products

Processes

Extraction utilizing liquid as extracting medium

426481, A23F 336

Patent

active

049769790

ABSTRACT:
The present invention provides a process for the decaffeination of tea containing 15 to 50% by weight of water with moist carbon dioxide at 255 to 350 bar at 50.degree. to 80.degree. C. in a pressure vessel, subsequent separation of the caffeine from the carbon dioxide with the help of an adsorbent and recycling the caffeine-free carbon dioxide over the already extracted tea, wherein the adsorbent is distributed in the material to be extracted in an amount of from 5 to 40% by weight, referred to the dry weight of the tea.

REFERENCES:
patent: 2198859 (1940-04-01), Burgin
patent: a4247570 (1981-01-01), Zosel
patent: 4364965 (1982-12-01), van der Stegen et al.
patent: 4411923 (1985-10-01), Hubert et al.

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