Calculated Mean Content Values

Units Average Min Max Standard Deviation
mg/100 ml 3.15 0.67 8.70 2.97
mol/100 ml 1.24e-05 2.64e-06 3.42e-05 1.17e-05

Values calculated by aggregating data from 10 different samples from 7 unique publications.

Aglycone Mean Content Values

Aglycone Units Average Min Max Standard Deviation
Daidzein mg/100 ml 3.15 0.67 8.70 2.97
mol/100 ml 1.24e-05 2.64e-06 3.42e-05 1.17e-05

Original Content Values Used to Produce Means

Mullner C., Sontag G. (2000) HPLC with coulometric electrode array detection - Determination of daidzein and genistein in soy based infant food, soy milk and soy based supplements. European Food Research and Technology 211:301-04
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
1.51 mg/100 ml Soy milk A yes 1
8.70 mg/100 ml Soy milk B yes 1
0.67 mg/100 ml Soy milk C yes 1
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
0.99 mg/100 ml Soy milk yes 3
Akitha Devi M.K., Mahendranath G., Sakthivelu G., Giridhar P., Rajasekaran T., Ravishankar G.A. (2009) Functional attributes of soybean seeds and products, with reference to isoflavone content and antioxidant activity. Food Chemistry 114:771-76
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
1.28 mg/100 ml Soy milk yes 5
Lu L.J.W., Broemeling L.D., Marshall M.V., Ramanujam V.M.S. (1995) A Simplified Method to Quantify Isoflavones in Commercial Soybean Diets and Human Urine after Legume Consumption. Cancer Epidemiology Biomarkers & Prevention 4:497-503 PubMed (9162309)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
3.50 mg/100 ml Soy milk yes 1
3.06 mg/100 ml Soy milk 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
4.58 mg/100 ml Soja Drink ungesübt yes 1
Franke A.A., Custer L.J., Wang W., Shi C.Y. (1998) HPLC analysis of isoflavonoids and other phenolic agents from foods and from human fluids. Proceedings of the Society for Experimental Biology and Medicine 217:263-73 PubMed (9492334)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
8.10 mg/100 ml Soy milk yes 3
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
0.92 mg/100 ml Soy milk yes 1