Table 7.
Antioxidant activity of each sample of supplemented sunflower oils obtained under the conditions dictated by the CCRD followed. Sample 13 is the original refined sunflower oil with a 20 min ultrasound treatment (average values and standard deviations, STD, of three replicates; * FRAP assays of sample 9, corresponding to one repetition of the central point, could not be determined due to sample shortage).
| Assay | DPPH | FRAP | ||||
|---|---|---|---|---|---|---|
| % RSA | STD | Eq. Trolox (mg/kg Oil) |
STD | Eq. Trolox (mg/kg Oil) |
STD | |
| 1 | 63.8 | 3.2 | 12.34 | 0.62 | 11.85 | 0.59 |
| 2 | 47.4 | 2.4 | 8.96 | 0.45 | 12.36 | 0.62 |
| 3 | 49.8 | 2.5 | 9.59 | 0.48 | 9.86 | 0.49 |
| 4 | 60.0 | 3.0 | 11.50 | 0.58 | 19.15 | 0.96 |
| 5 | 48.7 | 2.4 | 9.33 | 0.47 | 9.35 | 0.47 |
| 6 | 74.4 | 3.7 | 14.47 | 0.72 | 16.58 | 0.83 |
| 7 | 57.6 | 2.9 | 10.95 | 0.55 | 10.40 | 0.52 |
| 8 | 77.5 | 3.9 | 14.99 | 0.75 | 21.44 | 1.07 |
| 9 | 51.7 | 2.6 | 9.92 | 0.50 | * | - |
| 10 | 51.1 | 2.6 | 9.78 | 0.49 | 8.91 | 0.45 |
| 11 | 49.5 | 2.5 | 9.41 | 0.47 | 11.99 | 0.60 |
| 12 | 55.0 | 2.8 | 10.60 | 0.53 | 13.74 | 0.69 |
| 13 | 7.5 | 0.3 | 1.10 | 0.06 | 3.61 | 0.18 |