Development of rapid and simultaneous quantitative method for green tea catechins on the bioanalytical study using UPLC/ESI-MS

Shingen Misaka, Keisuke Kawabe, Satomi Onoue, José Pablo Werba, Monica Giroli, Junko Kimura, Hiroshi Watanabe, Shizuo Yamada

Research output: Contribution to journalArticlepeer-review


A rapid and quantitative analytical method for the simultaneous determination of green tea catechins using ultra-performance liquid chromatography/electrospray ionization-mass spectrometry was developed. Total analytical run time was 3.5min for the detection of (-)-epicatechin (EC), (-)-epicatechin-3-O-gallate (ECG), (-)-epigallocatechin (EGC), (-)-epigallocatechin-3-O-gallate (EGCG) and myricetin as the internal standard (IS) in rat plasma. The calibration curves were linear over the range of 10-5000ng/mL for all the catechins. The inter- and intra-day precision (relative standard deviation) and accuracy (percentage deviation) of the method were both lower than 10%. The average extraction recoveries in plasma ranged from 68.5 to 86.5%, and the lower limits of quantification of EC, EGC, ECG and EGCG were 10ng/mL with a signal-to-noise ratio of >10. The assay developed was successfully applied to a pharmacokinetic study of catechins following intravenous and intragastric administrations of green tea extract in rats. Plasma concentrations of four catechins were detected up to 5-24h after administration, and the pharmacokinetic parameters of catechins were in agreement with previous studies. From these findings, taken together with the high productivity and precision, the developed method could be a reliable and reproducible tool for the evaluation of pharmacokinetic properties of catechins.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalBiomedical Chromatography
Issue number1
Publication statusPublished - Jan 2013


  • Catechin
  • Green tea
  • Pharmacokinetic study
  • Rat plasma

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Clinical Biochemistry
  • Molecular Biology
  • Drug Discovery
  • Pharmacology


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