Calculated Mean Content Values

Units Average Min Max Standard Deviation
mg/100 g FW 6.52e-03 3.80e-03 9.00e-03 2.33e-03
mol/100 g 1.79e-08 1.04e-08 2.46e-08 6.38e-09

Values calculated by aggregating data from 5 different samples from 2 unique publications.

Aglycone Mean Content Values

Aglycone Units Average Min Max Standard Deviation
Secoisolariciresinol mg/100 g FW 6.52e-03 3.80e-03 9.00e-03 2.33e-03
mol/100 g 1.79e-08 1.04e-08 2.46e-08 6.38e-09

Original Content Values Used to Produce Means

Mazur, W.M.; Wahala, K.; Rasku, S.; Salakka, A.; Hase, T.; Adlercreutz, H. (1998) Lignan and isoflavonoid concentrations in tea and coffee. British Journal of Nutrition 79:37-45 PubMed (9505801)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.02 mg/100 ml Pure Lapsang Souchong tea no 1
0.03 mg/100 ml Earl Grey tea no 1
0.02 mg/100 ml Yellow label tea-bag no 1
0.04 mg/100 ml Prince of Wales tea-bag no 1
0.02 mg/100 ml Assam Fop no 1
Thompson L.U., Boucher B.A., Liu Z., Cotterchio M., Kreiger N. (2006) Phytoestrogen content of foods consumed in Canada, including isoflavones, lignans, and coumestan. Nutrition and Cancer 54:184-201 PubMed (16898863)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
3.80e-03 mg/100 g FW Tea, black orange pekoe yes 1
Kuhnle G.G.C., Dell'Aquila C., Aspinall S.M., Runswick S.A., Mulligan A.A., Bingham S.A. (2008) Phytoestrogen content of beverages, nuts, seeds, and oils. Journal of Agricultural and Food Chemistry 56:7311-7315 PubMed (18671400)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
9.00e-03 mg/100 g FW Tea, strong (15 g/L), from tea leaves yes 3
6.00e-03 mg/100 g FW Tea, weak (10 g/L), from tea leaves yes 3
4.00e-03 mg/100 g FW Tea, standard, from tea bags (4 bags/L) yes 3
8.00e-03 mg/100 g FW Tea, decaffeinated, from tea bag yes 3