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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.