Process for decaffeinating green coffee

Details Process for decaffeinating green coffee Process for decaffeinating green coffee

1989-01-25

1989-12-05

Golian, Joseph

Food or edible material: processes, compositions, and products

Processes

Treatment of liquid with nongaseous material other than...

426427, 544274, A23F 522

Patent

active

048851817

ABSTRACT:
A process for decaffeinating green coffee by extraction of the coffee with water and treatment of the aqueous extract with activated carbon whereby the caffeine is largely absorbed by the activated carbon. The resulting caffeine-loaded activated carbon is then treated with a selected acid whereby the caffeine is largely removed from the activated carbon. The carbon is then washed with water until it has pH in the range of 3 to 6, determined by the standard test method for pH of activated carbon (ASTM D 3838-80). The activated carbon is then ready to be reused more than ten times in the process without further treatment.

REFERENCES:
patent: 4298736 (1981-11-01), Katz et al.
patent: 4481223 (1984-11-01), Hinman et al.
patent: 4513136 (1985-04-01), Katz et al.
patent: 4540784 (1985-09-01), Vitzthum et al.
patent: 4548827 (1985-10-01), Katz et al.

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