Calculated Mean Content Values

Units Average Min Max Standard Deviation
mg/100 ml 1.14 1.00e-02 1.70 0.62
mol/100 ml 3.98e-06 3.49e-08 5.94e-06 2.15e-06

Values calculated by aggregating data from 11 different samples from 3 unique publications.

Aglycone Mean Content Values

Aglycone Units Average Min Max Standard Deviation
Kaempferol mg/100 ml 1.14 1.00e-02 1.70 0.62
mol/100 ml 3.98e-06 3.49e-08 5.94e-06 2.15e-06

Original Content Values Used to Produce Means

Mattila, P.;Astola, J.;Kumpulainen, J. (2000) Determination of flavonoids in plant material by HPLC with diode-array and electro-array detections. Journal of Agricultural and Food Chemistry 48:5834-41. PubMed (11312761)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.01 mg/100 ml Black tea infusion - Supermarkets yes 1
Hertog M.G.L., Hollman P.C.H., van de Putte B. (1993) Content of potentially anticarcenogenic flavonoids of tea infusions, wines, and fruit juices. Journal of Agricultural and Food Chemistry 41:1242-1246
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
1.50 mg/100 ml Black tea infusion Pickwick no 1
1.40 mg/100 ml Black tea infusion Van Nelle no 1
1.30 mg/100 ml Black tea infusion Albert Heijn no 1
1.50 mg/100 ml Black tea infusion St Michael no 1
1.60 mg/100 ml Black tea infusion Lipton no 1
1.70 mg/100 ml Black tea infusion Pickwick Earl Grey no 1
1.60 mg/100 ml Black tea infusion Jacksons no 1
1.20 mg/100 ml Black tea infusion Lay's after dinner no 1
0.70 mg/100 ml Black tea infusion Lay's english breakfast no 1
Luximon-Ramma A., Bahorun T., Crozier A., Zbarsky V., Datla K.P., Dexter D.T., Aruoma O.I. (2005) Characterization of the antioxidant functions of flavonoids and proanthocyanidins in Mauritian black teas. Food Research International 38:357-367
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.03 mg/100 ml Black tea - Fresh tea leaves infusion no 1