Table 3.
In Vitro antioxidant activity of rosemary essential oils.
| Sample | DPPH Test a IC50 (µg/mL) |
ABTS Test IC50 (µg/mL) |
β-carotene Bleaching Test IC50 (µg/mL) |
FRAP Test μM Fe (II)/g |
|
|---|---|---|---|---|---|
| R1 | 33.21% | 35.43 ± 2.83 **** | 45.21 ± 2.76 **** | 49.48 ± 3.08 **** | 2.95 ± 1.46 **** |
| R2 | 29.84% | 22.61 ± 1.91 **** | 33.18 ± 2.11 **** | 44.81 ± 2.75 **** | 5.59 ± 1.95 **** |
| Positive control | |||||
| Ascorbic acid | 5.02 ± 0.80 | 1.70 ± 0.06 | |||
| Propyl gallate | 0.09 ± 0.004 | 0.09 ± 0.004 | |||
| BHT | 63.22 ± 4.3 | ||||
Data are expressed as means ± S.D (n = 3). a At concentration of 1000 μg/mL. Differences within and between groups were evaluated by one-way ANOVA followed by a multicomparison Dunnett’s test α = 0.05): **** p < 0.0001 compared with the positive controls.