Bolca S., Urpi-Sarda M., Blondeel P., Roche N., Vanhaecke L., Possemiers S., Al-Maharik N., Botting N., De Keukeleire D., Bracke M., Heyerick A., Manach C., Depypere H. (2010) Disposition of soy isoflavones in normal human breast tissue. Am J Clin Nutr 91:976-84 PubMed (20164315)

Compound Mean content
Genistein 16.98 mg/250 mL
Daidzein 5.4 mg/250 mL
Genistein 5.27 mg/supplement
Daidzein 17.56 mg/supplement