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Simultaneous determination of catechins, caffeine and gallic acids in green, Oolong, black and pu-erh teas using HPLC with a photodiode array detector

Food ChemistryPolyphenolicsTanninMedicineGallic AcidsPu-erh TeasAnalytical ChemistryPhytochemicalPhotodiode Array DetectorPhytochemistryPharmacologyChromatography