PRODUCTION OF TEA LEAF TANNINS

PRODUCTION OF TEA LEAF TANNINS

PROBLEM TO BE SOLVED: To provide a method for producing low-caffeine tea leaf tannins substantially freed from caffeine. SOLUTION: This method for producing low-caffeine tea leaf tannins comprises the following procedure: a tea extract solution is subjected to contact treatment with a cation exchang...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: YAMASHITA KAZUYUKI, HASUDA ICHIRO, IWASAKI AKIRA
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC CHEMISTRY
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a method for producing low-caffeine tea leaf tannins substantially freed from caffeine. SOLUTION: This method for producing low-caffeine tea leaf tannins comprises the following procedure: a tea extract solution is subjected to contact treatment with a cation exchange resin, the resulting solution is subsequently subjected to contact treatment with a porous polymer resin, and the aimed tea leaf tannins adsorbed to the polymer resin is then eluted with ethanol. The caffeine content of the tea leaf tannins thus obtained is