Process for the production of decaffeinated tea
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United States of America Patent
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-
Jul 3, 1990
Issued Date -
N/A
app pub date -
May 11, 1989
filing date -
Nov 26, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
By the extraction with CO.sub.2 at 60 to 150 bar and 20.degree. to 70.degree. 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.degree. to 100.degree. C. through a bulk moistened tea. The solvent charged with caffeine is passed over an adsorber or purified by reduction of density.
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