Heinonen S., Wahala K., Adlercreutz H. (1999) Identification of isoflavone metabolites dihydrodaidzein, dihydrogenistein, 6'-OH-O-dma, and cis-4-OH-equol in human urine by gas chromatography-mass spectroscopy using authentic reference compounds. Anal Biochem 274:211-9 PubMed (10527518)

Compound Mean content
Daidzein 41.4 mg/100 g
Genistein 34.4 mg/100 g
Glycitein 3.5 mg/100 g