Table 2.
Antioxidant properties of P. carpunya EO evaluated by DPPH assay. The values, expressed as IC50, were compared to thymol, piperitone, limonene, 1,8-cineole, methyleugenol and Trolox®.
| DPPH | ||
|---|---|---|
| Samples | I C 50 1 ( μ g/mL) | TEAC (mmol TE/g) |
| P. carpunya EO | 159.80 ± 3.40 | 71.88 ± 1.53 |
| piperitone | 2278.00 ± 31.74 | 2.61 ± 0.32 |
| limonene | >1000 | <0.89 |
| 1,8-cineole | >1000 | <2.05 |
| methyleugenol | 602.00±5.59 | 17.87±0.56 |
| thymol | 70.80 ± 1.51 | 160.02 ± 3.45 |
| trolox | 3.97 ± 0.40 | -- |
1 IC50: concentration corresponding to the 50% of the bioactivity;
2 TEAC: Trolox equivalent (TE) antioxidant capacity.