Table 2.
Antioxidant activity of rapeseed oils without ant with β-sitosteryl sinapate stored under accelerated conditions.
| Storage Time (Weeks) | Antioxidant Activity (µmol TE/100 g) | ||
|---|---|---|---|
| ABTS * ± SD | DPPH * ± SD | FC * ± SD | |
| Refined Rapeseed Oil without β-Sitosteryl Sinapate | |||
| 0 | 2384.8 ± 21.1 f | 606.0 ± 5.6 d | 129.4 ± 4.8 f,g |
| 1 | 1824.1 ± 42.4 d | 524.6 ± 11.9 c | 112.8 ± 2.6 d |
| 2 | 1659.9 ± 42.7 c | 488.9 ± 17.2 b | 89.6 ± 2.1 c |
| 3 | 1469.2 ± 17.7 b | 460.9 ± 5.0 a | 71.9 ± 3.7 b |
| 4 | 1346.8 ± 56.6 a | 452.6 ± 10.1 a | 59.1 ± 2.3 a |
| Refined Rapeseed Oil with β-Sitosteryl Sinapate | |||
| 0 | 2505.6 ± 60.9 g | 806.2 ± 6.9 h | 132.3 ± 4.7 g |
| 1 | 2332.5 ± 79.1 f | 784.7 ± 7.4 g | 126.8 ± 2.8 f |
| 2 | 2116.0 ± 41.6 e | 765.1 ± 14.6 f | 120.4 ± 3.4 e |
| 3 | 2095.8 ± 47.8 e | 771.8 ± 12.3 f,g | 117.2 ± 3.6 e |
| 4 | 2119.3 ± 42.9 e | 748.6 ± 5.3 e | 117.3 ± 1.9 d,e |
* n = 5; SD—Standard Deviation; Different letters (a–h) within the same column indicate significant differences between antioxidant activity of the stored oils during 4 weeks (one-way ANOVA and Duncan test, p < 0.05).