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Table 2 Major tea polyphenols and the amounts present in the powder used in the current study

From: Effect of green tea on reward learning in healthy individuals: a randomized, double-blind, placebo-controlled pilot study

Component Amount Method
epigallocatechin-3-gallate (EGCG) 45.6% HPLC
epigallocatechin (EGC) 16.7% HPLC
epicatechin-3-gallate (ECG) 11.4% HPLC
epicatechin (EC) 6.8% HPLC
caffeine 0.6% HPLC
  1. HPLC High Performance Liquid Chromatography.