Table 3.
Tocopherol isomers of samples, parameters of oxidative stability and antioxidant tests
| Hemp | Terebinth | Radish | Stinging nettle | Laurel | |
|---|---|---|---|---|---|
| α-Tocopherol | 25.58 ± 0.58c | 102.21 ± 1.01a | 28.66 ± 0.23c | 34.96 ± 0.29b | 28.96 ± 3.23c |
| β-Tocopherol | 5.96 ± 0.05c | 3.24 ± 0.23d | 12.41 ± 0.72b | nd | 313.96 ± 0.05a |
| γ-Tocopherol | 597.91 ± 12.14a | 130.54 ± 8.65d | 545.67 ± 15.55b | 372.29 ± 1.17c | 45.33 ± 0.94e |
| δ-Tocopherol | 39.71 ± 1.47a | 13.79 ± 1.94b | 12.41 ± 0.12b | 3.80 ± 0.17c | 3.29 ± 0.41c |
| PV | 0.90 ± 0.64c | 2.13 ± 0.29b | 3.73 ± 0.51a | 0.85 ± 0.17d | 0.51 ± 0.12e |
| TBARS | 6.43 ± 0.48a | 0.68 ± 0.02e | 4.43 ± 0.01b | 3.88 ± 0.68c | 1.34 ± 0.13d |
| DPPH | 62.37 ± 0.32b | 52.13 ± 0.75c | 52.62 ± 1.16c | 46.01 ± 0.22d | 85.79 ± 4.81a |
| ABTS | 39.69 ± 0.46c | 46.53 ± 1.15b | 35.57 ± 0.13d | 33.18 ± 0.69e | 85.28 ± 1.16a |
Tocopherol isomers are expressed as mg/kg oil. TBARS are expressed mmol MA equiv/g oil. DPPH and ABTS values are expressed as mg trolox/100 g oil. Each value is the mean ± SD of triplicate determinations
Means with different letters in the rows are significantly different (P < 0.05)
nd not detected