Method for producing purified tea extract
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United States of America Patent
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May 21, 2013
Grant Date -
Jul 22, 2010
app pub date -
Sep 4, 2008
filing date -
Sep 5, 2007
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Abstract
A purified tea extract is improved in taste by reducing a percentage of gallates in the non-polymer catechins. A process according to the present invention for the production of a purified tea extract includes subjecting a tea extract to a hydrolysis treatment, causing the tea extract to adsorb on the activated carbon, and then bringing a basic aqueous solution or an aqueous solution of an organic solvent into contact with the activated carbon to elute the non-polymer catechins.
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