Table 1.
Compound | Antioxidant Capacity * | ||
---|---|---|---|
DPPH (IC50) (mM) | FRAP (mmole TE/L) | ORAC (mmole TE/L) | |
Curcumin | 0.86 e | 5.01 ± 0.1 c | 1.89 ± 0.2 a |
2a | 2.86 h | 1.13 ± 0.4 g | 0.12 ± 0.01 g |
2b | 2.58 g | 3.02 ± 0.02 d | 0.43 ± 0.1 f |
2c | 4.07 i | 1.32 ± 0.001 f | 0.11 ± 0.01 g |
2d | 0.72 d | 5.35 ± 0.1 b | 0.50 ± 0.02 ef |
2e | 2.57 g | 0.47 ± 0.1 k | 0.60 ± 0.1e |
2f | 0.71 d | 1.28 ± 0.04 fg | 0.49 ± 0.1 ef |
2g | 1.36 f | 1.12 ± 0.02 g | 0.84 ± 0.01 d |
3a | 0.07 a | 1.41 ± 0.1 f | 1.12 ± 0.1 c |
3b | 0.06 a | 2.29 ± 0.1 e | 0.49 ± 0.1 ef |
3c | 0.34 c | 1.09 ± 0.1 gh | 1.17 ± 0.1 b |
3d | 0.07 a | 6.70 ± 0.32 a | 0.75 ± 0.05 d |
3e | 0.03 a | 0.67 ± 0.02 j | 0.69 ± 0.1 e |
3f | 0.09 a | 1.09 ± 0.1 gh | 1.30 ± 0.02 b |
3g | 0.51 b | 0.95 ± 0.02 hi | 1.25 ± 0.04 bc |
3h | 0.36 c | 1.05 ± 0.01 ghi | 0.84 ± 0.1 d |
* Data are presented as mean ± SD. Mean with different subscripts in each column is significantly different (p < 0.05). FRAP, ferric reducing ability of plasma: used 10 μM compounds dissolved in DMSO. ORAC: oxygen radical absorbance capacity: used 1 μM compounds dissolved in DMSO. TE, Trolox equivalence.