METHOD FOR PRODUCING REFINED GREEN TEA EXTRACT

PROBLEM TO BE SOLVED: To provide a method for producing a refined green tea extract for selectively removing caffeine from a green tea extract without remarkably changing the composition of catechin and worsening tone. SOLUTION: This method for producing the refined green tea extract containing 25-9...

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Hauptverfasser:	OGURA YOSHIKAZU, SHIMIZU MASAMI, TAKATANI HITOSHI, SAITO ATSUSHI
Format:	Patent
Sprache:	eng
Schlagworte:	COFFEE FOODS OR FOODSTUFFS HUMAN NECESSITIES MANUFACTURE, PREPARATION, OR INFUSION THEREOF TEA THEIR SUBSTITUTES THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for producing a refined green tea extract for selectively removing caffeine from a green tea extract without remarkably changing the composition of catechin and worsening tone. SOLUTION: This method for producing the refined green tea extract containing 25-90 wt.% of non-polymeric catechins on the dry weight of the extract comprises distributing a green tea extract in a mixed solution at the weight ratio of an organic solvent to water of (91:9) to (97:3), and bringing the product into contact with activated carbon and acid white clay or activated clay. COPYRIGHT: (C)2006,JPO&NCIPI