Table 3.
USDA-Iowa State University Survey of Soy Infant Formulasa
| Aglycone equivalents (after hydrolysis) |
||||
|---|---|---|---|---|
| Formula Description | Isoflavone | Mean (range) mg/100g formula | Isoflavone %b | Confidence codec |
| ENFAMIL NEXT STEP, powder, not reconstituted | Daidzein | 7.23 (7.15–7.30) | 28.9 | b |
| Genistein | 14.75 (14.50–15.00) | 59.0 | b | |
| Glycitein | 3.00 (2.95–3.05) | 12.0 | b | |
| Total isoflavone | 25.00 (24.90–25.10) | b | ||
| MEAD JOHNSON, GERBER, powder, not reconstituted | Daidzein | 8.08 (6.50–9.65) | 32.2 | b |
| Genistein | 13.90 (12.80–15.00) | 55.4 | b | |
| Glycitein | 3.12 (2.93–3.30) | 12.5 | b | |
| Total isoflavone | 25.09 (22.23–27.95) | b | ||
| MEAD JOHNSON, PROSOBEE with iron, liquid concentrate, not reconstituted | Daidzein | 1.10 | 18.2 | c |
| Genistein | 2.22 | 36.8 | c | |
| Total isoflavone | 6.03 (3.32–8.75) | c | ||
| MEAD JOHNSON, PROSOBEE with iron, powder, not reconstituted | Daidzein | 7.05 (6.90–7.20) | 28.3 | b |
| Genistein | 14.94 (14.45–15.43) | 59.9 | b | |
| Glycitein | 2.95 (2.83–3.07) | 11.8 | b | |
| Total isoflavone | 24.94 (24.18–25.70) | b | ||
| MEAD JOHNSON, PROSOBEE with iron, ready-to-feed | Daidzein | 1.71 | 44.0 | c |
| Genistein | 2.18 | 56.0 | c | |
| Total isoflavone | 3.89 | c | ||
| ROSS, ISOMIL, with iron, powder, not reconstituted | Daidzein | 6.03 (6.03–6.03) | 28.7 | b |
| Genistein | 12.23 (11.43–13.03) | 58.3 | b | |
| Glycitein | 2.73 (2.70–2.77) | 13.0 | b | |
| Total isoflavone | 20.99 (20.16–21.83) | b | ||
| ROSS, ISOMIL, with iron, powder, reconstituted as fed | Daidzein | 0.78 | 28.8 | None given |
| Genistein | 1.58 | 58.3 | None given | |
| Glycitein | 0.35 | 12.9 | None given | |
| Total isoflavone | 2.71 | None given | ||
| ROSS, ISOMIL, with iron, ready-to-feed | Daidzein | 1.91 | 45.8 | c |
| Genistein | 2.26 | 54.2 | c | |
| Total isoflavone | 4.17 | c | ||
| WYETH-AYERST, NURSOY, with iron, liquid concentrate, not reconstituted | Daidzein | 1.02 (0.79–1.25) | 25.4 | b |
| Genistein | 2.82 (2.19–3.45) | 70.1 | b | |
| Glycitein | 0.35 | 8.70 | c | |
| Total isoflavone | 4.02 (2.98–5.05) | b | ||
| WYETH-AYERST, NURSOY, with iron, powder, not reconstituted | Daidzein | 5.70 | 21.9 | c |
| Genistein | 13.55 | 52.1 | c | |
| Glycitein | 2.05 | 7.9 | c | |
| Total isoflavone | 26.00 (21.30–30.70) | b | ||
| WYETH-AYERST, NURSOY, with iron, ready-to-feed | Daidzein | 0.75 | 28.5 | c |
| Genistein | 1.60 | 60.8 | c | |
| Glycitein | 0.28 | 10.6 | c | |
| Total isoflavone | 2.63 | c | ||
a
Brand names are registered to their owners. From USDA (2002b).
b
Calculated from mean values by CERHR.
c
According to the report, "Each mean is assigned a Confidence Code (CC) of a, b, or c. The Confidence code is an indicator of relative quality of the data and the reliability of a given mean value. A confidence Code of "a" indicates considerable reliability, due either to a few exemplary studies or to a large number of studies of varying quality." [The Expert Panel assumes that "a" means the highest confidence and "c" means the lowest confidence.]