Table 1.

Estrogenic activity of soy protein powder in S. cerevisiae yeast strain PL3

TreatmentDilutionER-β vector controlER-βER-α vector controlER-α
Pure soy protein powder lot 11:1,000+
1:10,000+
Pure soy protein powder lot 21:1,000+
1:10,000+
Ethanol control*N/A
Estradiol control1:10,000++++
  • Abbreviation: N/A, not applicable.

  • * Ethanol served as a negative control.

  • 17β-Estradiol served as a positive control.