Table 2.
Inhibition of light emission from Fe2+-EGTA-H2O2 by selected phenolic acids.
| Compound Concentration (µmol/L) | % Inhibition of Light Emission from Fe2+-EGTA-H2O2 System | ||
|---|---|---|---|
| Ferulic Acid | Chlorogenic Acid | Caffeic Acid | |
| 87 | 90 ± 4 (90;7) * | 90 ± 5 (90;8) | 97 ± 2 (97;3) |
| 174 | 90 ± 3 (90;5) * | 94 ± 3 (94;5) | 98 ± 1 (98;1) |
| 870 | 90 ± 5 (88;9) * | 91 ± 5 (88;8) * | 98 ± 3 (98;2) |
Phenolic acid was mixed with EGTA and Fe2+ and then H2O2 was automatically injected with subsequent measurement of total light emission for 2 min. Results obtained from at least four separate experiments. * vs. corresponding concentration of caffeic acid, p < 0.05.