Food or edible material: processes – compositions – and products – Processes – Extraction utilizing liquid as extracting medium
Patent
1988-08-05
1990-03-27
Golian, Joseph
Food or edible material: processes, compositions, and products
Processes
Extraction utilizing liquid as extracting medium
426478, 426479, 426481, 426432, A23F 520
Patent
active
049119419
ABSTRACT:
A method of continuously decaffeinating moistened, green coffee solids with supercritical carbon dioxide. Moistened, green coffee beans are moved periodically through an extraction vessel and contacted with continuously flowing supercritical carbon dioxide which extracts caffeine from the moist, green coffee beans. Caffeine is removed from the supercritical carbon dioxide by counter-current contact with wash water in an open vessel. The caffeine-depleted supercritical carbon dioxide is recirculated back to the extraction vessel and the caffeine-bearing wash water is subjected to concentration by reverse osmosis. Acidic, substantially caffeine-free permeate is directed back to the extraction system as wash water, or to moisturize the green coffee beans prior to extraction, or both.
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Katz Saul N.
O'Brien Michael J.
Prasad Ravi
Skiff Ronald H.
Spence Jean E.
Donovan Daniel J.
General Foods Corporation
Golian Joseph
Savoie Thomas R.
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