Table 1.
The values of percent superoxide anion scavenging by curcumin and its derivatives.
| Antioxidant | Concentration [µM] | Scavenging [%] |
|---|---|---|
| Curcumin | 0.05 | 7 |
| Compound 1 | 1000 | 5 |
| Compound 2 | 1000 | 11 |
| Compound 3 | 0.50 | 1 |
| Compound 4 | 0.05 | 3 |
| Compound 5 | 5.00 | 5 |
| Compound 6 | 0.05 | 6 |
| Compound 7 | 6.25 | 3 |
| Compound 8 | 0.05 | 18 |
| Compound 9 | 0.08 | 14 |
| Compound 10 | 0.50 | 3 |
| Compound 11 | 0.50 | * |
| Compound 12 | 0.05 | 9 |
| l-ascorbic acid [28] | 0.05 | 9.45 |
* For compound 11, it was not possible to select the concentration in which the formation of the product with the radical anion would not interfere with the measurement of absorbance at 560 nm.