Table 4.
Activities of as-synthesized compounds and standard agents against DPPH* and ABTS* radicals.
| Compounds | DPPH Radical Scavenging Activity | ABTS Radical Scavenging Activity | ||
|---|---|---|---|---|
| IC50 (µM) | R2 | IC50 (µM) | R2 | |
| BEB | 3.49 ± 1.57 | 0.913 | 2.77 ± 1.44 | 0.781 |
| [Cu(BEB)Cl] | 3.43 ± 0.82 | 0.965 | 3.02 ± 0.47 | 0.852 |
| [Cu(BEB)Br] | 3.40 ± 1.51 | 0.962 | 3.73 ± 0.77 | 0.739 |
| [Cu(BEB)SCN] | 2.60 ± 1.46 | 0.904 | 3.42 ± 0.41 | 0.917 |
| [Cu(BEB)NO3] | 2.01 ± 1.49 | 0.995 | 4.56 ± 1.99 | 0.766 |
| [Cu(BEB)CH3COO] | 2.88 ± 0.66 | 0.969 | 4.33 ± 1.62 | 0.778 |
| Vit. C * | 1.74 ± 1.19 | 0.976 | - | - |
| Rutin * | 2.49 ± 1.27 | 0.835 | 2.86 ± 0.92 | 0.931 |
| Gallic acid * | 1.44 ± 1.11 | 0.890 | 1.22 ± 1.08 | 0.949 |
| BHT * | - | - | 2.31 ± 1.30 | 0.971 |
(n = 3, X ± SEM), IC50—Inhibitory concentration; shows the percent inhibition of the examined compound at 50%, R2 = correlation coefficient. * Standards.