Table 4.
IC50 and TEAC values. Median effective concentrations (IC50s, in mM) of phytochemicals able to scavenge the DPPH or ABTS radicals, or to inhibit the lipid peroxidation. * p < 0.05, *** p < 0.0001). Letters indicate the significant differences among phytochemicals for each assay (one-way ANOVA, Tukey’s multiple comparison test). All data come from three independent experiments. The 95% confidence limits are shown in parentheses.
| IC50 | TEAC | ||||
|---|---|---|---|---|---|
| DPPH | ABTS | TBARS | DPPH | ABTS | |
| Trolox | 0.016 (0.014–0.019) |
0.013 (0.011–0.015) |
- | - | - |
| α-Tocopherol | - | - | 0.013 (0.011–0.014) |
- | - |
| Eugenol | 0.152 a,*** (0.140–0.165) |
0.012 a (0.010–0.014) |
0.024 a (0.019–0.030) |
0.105 | 1.083 |
| Capsaicin | 0.090 a,* (0.088–0.092) |
0.016 a (0.014–0.017) |
0.198 b,*** (0.154–0.251) |
0.178 | 0.812 |
| Vanillin | 3.199 b,*** (2.638–3.879) |
5.566 b,*** (4.663–6.642) |
0.802c,*** (0.752–0.855) |
0.005 | 0.002 |