Calculated Mean Content Values

Units Average Min Max Standard Deviation
mg/100 g FW 7.37 0.90 15.10 5.78
mol/100 g 2.90e-05 3.54e-06 5.94e-05 2.27e-05

Values calculated by aggregating data from 5 different samples from 4 unique publications.

Aglycone Mean Content Values

Aglycone Units Average Min Max Standard Deviation
Daidzein mg/100 g FW 7.37 0.90 15.10 5.78
mol/100 g 2.90e-05 3.54e-06 5.94e-05 2.27e-05

Original Content Values Used to Produce Means

Mitani K., Narimatsu S., Kataoka H. (2003) Determination of daidzein and genistein in soybean foods by automated on-line in-tube solid-phase microextraction coupled to high-performance liquid chromatography. Journal of Chromatography A 986:169-77 PubMed (12597624)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.90 mg/100 g FW Tofu yes 3
Schwartz H., Sontag G. (2009) Comparison of sample preparation methods for analysis of isoflavones in foodstuffs. Analytica Chimica Acta 633:204-15 PubMed (19166724)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
15.10 mg/100 g FW Tofu yes 1
14.90 mg/100 g FW Tofu yes 1
Preinerstorfer B., Sontag G. (2004) Determination of isoflavones in commercial soy products by HPLC and coulometric electrode array detection. European Food Research and Technology 219:305-10
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
9.59 mg/100 g FW Bio Tofu natur yes 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
9.33 mg/100 g FW Tofu yes 1