METHOD FOR PRODUCING LOW-CAFFEINE TEA EXTRACT
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United States of America Patent
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Sep 1, 2009
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Sep 3, 2008
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Abstract
To provide a method for reducing a caffeine amount in a caffeine-containing tea extract liquid without deteriorating the original flavor of tea. The present invention provides a method for producing a low-caffeine tea extract, including the steps of: treating a caffeine-containing tea extract with tannase; causing a mixture of non-ester-type catechins and caffeine to be deposited in the caffeine-containing tea extract after the tannase treatment; and separating the deposited mixture for removal. Moreover, the present invention provides a low-caffeine tea extract obtained according to the production method and a food or drink containing the low-caffeine tea extract.
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