Table 4.
DPPH scavenging activities of essential oils from differently processed A. ovata samples.
| DPPH inhibitory effects | ||
|---|---|---|
| Sample (mg ml−1) | Inhibitiona (%) | IC50 value |
| A | 63.53 ± 0.25 | 2.71 |
| B | 36.87 ± 0.23 | >5 |
| C | 47.08 ± 2.88 | >5 |
| D | 38.63 ± 3.34 | >5 |
| E | 33.19 ± 0.99 | >5 |
| Ascorbic acid (mM) | 67.94 ± 0.96 | 1.22 |
Concentration of each sample was 5 mg ml−1, except ascorbic acid (2.5 mM). Raw materials, A; stir-frying without assistant substances for 5 min, B; with red soil for 5 min, C; with burnt clay for 5 min, D.; without assistant substances for 30 min, E.