Table 5.
Oxygen radical absorbing capacity (ORAC) assay results. IC50 values (µM) with a 95% confidence range (in brackets) come from the interpolation of three independent experiments. ORAC values, expressed as µM Trolox with equivalent activity to 1 µM phytochemical (or Trolox equivalents: µM TE), are reported as the mean of three independent experiments with standard deviation. Asterisks highlight significant differences from Trolox (one-way ANOVA, Dunnett’s test: * p < 0.05, ** p < 0.001). Letters indicate significant differences among phytochemicals for each outcome for p < 0.05 (one-way ANOVA, Tukey’s multiple comparison test).
| IC50 | ORAC Value (TE) | |
|---|---|---|
| Trolox | 10.83 (10.33–11.35) |
- |
| Eugenol | 4.11 a,** (3.91–4.32) |
2.12 ± 0.08 a |
| Capsaicin | 5.81 a,** (5.40–6.24) |
1.60 ± 0.25 a |
| Vanillin | 6.15 a,* (5.53–6.83) |
1.81 ± 0.19 a |