Method of removing caffeine from a caffeine-containing catechin compound composition
AssigneeKao Corporation
InventorsYoshikazu OGURA, Susumu OHISHI, Masahiro FUKUDA, Hirokazu TAKAHASHI, Eri ITAYA, Atsushi KONISHI
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Abstract
A process for selectively removing caffeine from a caffeine-containing catechin composition, which comprises dissolving the caffeine-containing catechin composition in a 9/1 to 1/9 by weight mixed solution of an organic solvent and water, and then bringing the resultant solution into contact with activated carbon alone or with activated carbon and also acid clay or activated clay; and a packaged beverage containing such a decaffeinated composition.
Claims9
A caffeine-containing tea extract, wherein:
- (a) a content of gallates in non-polymer catechins is from 45 to 60 wt %,
- (b) a weight ratio of said non-polymer catechins to caffeine is from 8 to 40,
- (c) a weight ratio of said non-polymer catechins to (sucrose+glucose) is from 2 to 15, and
- (d) dietary fibers amount to 0.5 wt % or less of a solid content.
A packaged beverage comprising a green tea extract obtained by a process which comprises dissolving a caffeine-containing catechin composition in a 9/1 to 1/9 by weight mixed solution of an organic solvent and water, and then bringing the resultant solution into contact with activated carbon to selectively remove caffeine.
A packaged beverage comprising a green tea extract obtained by a process which comprises dissolving a caffeine-containing catechin composition in a 9/1 to 1/9 by weight mixed solution of an organic solvent and water, and then bringing the resultant solution into contact with activated carbon and also acid clay or activated clay to selectively remove caffeine.
A green tea extract wherein a content weight ratio [(A)/(B)] of (A) non-polymer catechins to (B) total polyphenols is from 0.83 to 0.96.
Dependencies are inferred from the claim text.