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Table 1 Contents of catechins and caffeine in green tea samples (grams per 100 g)

From: Effect of green tea on blood glucose levels and serum proteomic patterns in diabetic (db/db) mice and on glucose metabolism in healthy humans

  Green tea powder No. 12a No. 13b
catechins    
   C 0.1 1.3 0
   EC 0.6 1.9 1.0
   ECg 0.6 1.6 0.2
   EGC 0.3 0.9 5.8
   EGCg 5.6 10.6 3.5
   total 7.2 16.3 10.5
caffeine 4.3 4.5 1.7
  1. C: (+)-catechin, EC: (-)-epicatechin, ECg: (-)-epicatechin gallate, EGC: (-)-epigallocatechin, EGCg: (-)-epigallocatechin gallate, total: total catechins. a,b The dried extract of fresh raw leaves of tea (Camellia sinensis, Theaceae) prepared at Cultivar No.12 (a, Chinhsuan) and No. 13 (b, Tzuiyu).