Table 2 Physicochemical characteristics of the purified oils with and without antioxidants added at the beginning of the extraction process
Oil samples | Color | Moisture (%) | FFAs (% as oleic acid) | AV (mg KOH/g) | POV (meqO2/kg) |
|---|---|---|---|---|---|
Without addition of antioxidant | Bright yellow | 0.0 | 0.71 ± 0.20 | 1.40 ± 0.40 | 8.33 ± 0.58 |
Addition of tannic acid | Light yellow | 0.0 | 0.56 ± 0.00 | 1.12 ± 0.00 | 2.67 ± 0.58 |
Addition of gallic acid | Bright yellow | 0.0 | 0.71 ± 0.20 | 1.40 ± 0.40 | 4.33 ± 2.52 |
Addition of Aronia powder | Bright yellow | 0.0 | 0.71 ± 0.20 | 1.40 ± 0.40 | 2.33 ± 2.31 |