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Table 1 Isoflavone levels (μg/ml) in faecal cultures from equol-producing and non-producing women in mMCBISO medium

From: Bacterial communities and metabolic activity of faecal cultures from equol producer and non-producer menopausal women under treatment with soy isoflavones

Sample Isoflavone Primary cultures Secondary cultures
WCa Daidzin 0.24 ± 0.09 24.69 ± 5.10
Daidzein 1.74 ± 0.07 under LOQc
Equol 2.62 ± 0.04 under LOQ
WGa Daidzin 0.05 ± 0.02 0.12 ± 0.06
Daidzein under LOQ under LOQ
Equol 3.07 ± 0.24 7.67 ± 0.64
WPa Daidzin 0.09 ± 0.04 0.18 ± 0.07
Daidzein 0.02 ± 0.01 under LOQ
Equol 1.40 ± 0.06 4.02 ± 0.35
WEb Daidzin under LOQ under LOQ
Daidzein 24.10 ± 3.32 45.57 ± 5.46
Equol under LOQ under LOQ
Uninoculated culture media Daidzin 16.83 ± 2.89 N.A.
Daidzein 5.57 ± 1.19 N.A.
Equol under LOQ N.A.
Slackia equolifaciens Daidzin 16.53 ± 3.68 N.A.
Daidzein 0.06 ± 0.05 N.A.
Equol 2.01 ± 0.10 N.A.
  1. N.A. not applicable, mMCB ISO modified medium for colonic bacteria supplemented with isoflavones
  2. aequol-producing woman
  3. bequol non-producing woman
  4. c LOQ Limit of quantification (0.002 μg/ml for equol; 0.004 μg/ml for daidzein and 0.014 for daidzin)