Calculated Mean Content Values

Units Average Min Max Standard Deviation
mg/100 g FW 0.18 4.00e-03 0.90 0.37
mol/100 g 4.94e-07 1.09e-08 2.46e-06 1.02e-06

Values calculated by aggregating data from 9 different samples from 4 unique publications.

Aglycone Mean Content Values

Aglycone Units Average Min Max Standard Deviation
Secoisolariciresinol mg/100 g FW 0.18 4.00e-03 0.90 0.37
mol/100 g 4.94e-07 1.09e-08 2.46e-06 1.02e-06

Original Content Values Used to Produce Means

Milder I.E.J., Arts I.C.W., Van de Putte B., Venema D.P., Hollman P.C.H. (2005) Lignan contents of Dutch plant foods: a database including lariciresinol, pinoresinol, secoisolariciresinol and matairesinol. British Journal of Nutrition 93:393-402 PubMed (15877880)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.80 mg/100 g FW Lettuce (Lactuca sativa L.) yes 3
0.90 mg/100 g FW Iceberg lettuce (Lactuca sativa L. cv capitata L.) yes 3
Kuhnle G.G.C., Dell'Aquila C., Aspinall S.M., Runswick S.A., Joosen A.M.C.P., Mulligan A.A., Bingham S.A. (2009) Phytoestrogen content of fruits and vegetables commonly consumed in the UK based on LC-MS and 13C-labelled standards. Food Chemistry 116:542-54
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
4.00e-03 mg/100 g FW Lettuce, cos no 5
7.00e-03 mg/100 g FW Lettuce, iceberg no 5
5.00e-03 mg/100 g FW Lettuce, little gem no 5
7.00e-03 mg/100 g FW Lettuce, round no 5
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
4.90e-03 mg/100 g FW Lettuce, romaine hearts, raw yes 1
Kuhnle G.G.C., Dell'Aquila C., Aspinall S.M., Low Y.-L., Kussmaul M., Bingham S.A. (2007) Extraction and quantification of phytoestrogens in foods using automated solid-phase extraction and LC/MS/MS. Analytical Chemistry 79:9234-9239 PubMed (17975893)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
7.40e-03 mg/100 g FW Lettuce (Iceberg), raw no 1
7.55e-03 mg/100 g FW Lettuce (round), raw no 1