Table 2 Radical scavenging activities of isolated compounds
Compound | DPPH radical SC50 (μM) | Alkyl radical SC50 (μM) | ABTS radical SC50 (μM) |
|---|---|---|---|
1 | 12.1 ± 2.1a | 27.2 ± 4.1 | 81.8 ± 0.7 |
2 | 4.0 ± 3.1 | 63.2 ± 12.4 | 56.7 ± 0.9 |
3 | 3.0 ± 2.9 | 46.8 ± 13.0 | 37.7 ± 0.9 |
4 | 5.7 ± 3.1 | 32.2 ± 4.8 | >100 |
5 | >20 | 94.3 ± 6.9 | >100 |
6 | >20 | 45.0 ± 7.5 | 93.3 ± 2.1 |