TABLE I.
Dietary and Serum Levels of Soy Isoflavones and Metabolites
| Dietary intakea (mg/day/mouse) | Serum levelsb (µM) | |||||||
|---|---|---|---|---|---|---|---|---|
| Treatment | Genistein | Daidzein | Glycitein | Genistein | Daidzein | Glycitein | Equol | DMA |
| Control | 0.000 ± 0.000c | 0.000 ± 0.000c | 0.000 ± 0.000c | 0.000 | 0.000 | 0.002 | 0.000 | 0.000 |
| Soy protein (20%) | 0.029 ± 0.000c | 0.014 ± 0.000c | 0.004 ± 0.000c | 0.063 | 0.017 | 0.004 | 0.0002 | 0.014 |
| Genistin (0.14%) | 1.741 ± 0.072d | 0.128 ± 0.005c | 0.006 ± 0.000c | 1.572 | 0.205 | 0.013 | 0.721 | 0.053 |
| SPC (0.5%) | 1.885 ± 0.201d | 1.502 ± 0.160d | 0.323 ± 0.034d | 1.839 | 1.641 | 0.261 | 9.361 | 0.554 |
a
Values are expressed as means ± standard errors. Within a column, the differences between values not having a common superscript letter (c,d) are statistically significant. See text for two-side P values for specific comparisons.
b
No standard deviations are provided for serum levels of isoflavones and metabolites because only a single sample was analyzed for each group.