Calculated Mean Content Values

Units Average Min Max Standard Deviation
mg/100 ml 1.20 0.77 1.63 0.37
mol/100 ml 3.39e-06 2.17e-06 4.60e-06 1.04e-06

Values calculated by aggregating data from 7 different samples from 1 unique publication.

Aglycone Mean Content Values

Aglycone Units Average Min Max Standard Deviation
Caffeic acid mg/100 ml 0.61 0.39 0.83 0.19
mol/100 ml 1.73e-06 1.11e-06 2.34e-06 5.30e-07

Original Content Values Used to Produce Means

Rechner, A.R.; Wagner, E.; Buren van, L.; Put van de, F.; Wiseman, S.; Rice-Evans, C.A. (2002) Black tea represents a major source of dietary phenolics among regular tea drinkers. Free radical research 36:1127-1135
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
1.53 mg/100 ml Black tea infusion brand 5 no 3
1.10 mg/100 ml Black tea infusion brand 6 no 3
1.58 mg/100 ml Black tea infusion brand 1 no 3
0.83 mg/100 ml Black tea infusion brand 7 no 3
0.77 mg/100 ml Black tea infusion brand 2 no 3
0.98 mg/100 ml Black tea infusion brand 3 no 3
1.63 mg/100 ml Black tea infusion brand 4 no 3