Table 3.
Bioactive compounds and antioxidant activity of unroasted and roasted sweet and bitter lupin seeds oil.
| Lupin Seed Oils | ||||
|---|---|---|---|---|
| Bioactive Content | Sweet Lupin Seeds Oil | Bitter Lupin Seeds Oil | ||
| Unroasted | Roasted | Unroasted | Roasted | |
| Phytosterols (mg/100 g) | ||||
| Campesterol | 74.61 ± 1.57 b | 70.42 ± 1.43 c | 77.35 ± 3.54 a | 65.85 ± 2.1 d |
| Stigmasterol | 0.93 ± 0.07 b | 0.03 ± 0.05 d | 1.35 ± 0.09 a | 0.72 ± 0.15 c |
| β-sitosterol | 326.57 ±3.91 a | 306.76 ± 3.61 b | 303.8 ± 6.10 b | 270.62 ± 8.7 c |
| Δ-5 avenasterol | 7.91 ± 0.22 c | 5.34 ± 0.39 d | 59.13 ± 5.9 a | 45.95 ± 2.15 b |
| Brassicasterol | 0.39 ± 0.15 b | 0.1 ± 0.01 d | 0.96 ± 0.18 a | 0.27 ± 0.25 c |
| Total | 406.18 | 382.65 | 442.59 | 383.41 |
| Carotenoids (mg/kg) | ||||
| Lutein | 0.65 ± 0.15 a | 0.17 ± 0.05 c | 0.31 ± 0.03 b | 0.07 ± 0.05 d |
| Zeaksantyna | 1.24 ± 0.17 a | 0.77 ± 0.15 b | 0.03 ± 0.05 c | ND |
| β-Carotene | 99.3 ± 0.36 a | 97.97 ± 0.6 b | 66.57 ± 0.68 c | 65.57 ± 0.35 d |
| Antioxidant activity | ||||
| AOA % | 74.22 | 76.7 | 66.63 | 72.89 |
| EC50 (mg oil) | 43.74 | 30.17 | 62.68 | 41.34 |
| 1/EC50x1000 | 23 | 33 | 16 | 24 |
TPC = total phenolic content (µg Gallic acid/1 g oil), AOA% = antioxidant activity (value represents the percent inhibition of oxidation of the linoleic acid/β-carotene emulation), EC50 = concentration of extract that causes a 50% decrease in DPPH absorbance, 1/EC50 = antiradical power. The values with a different letter in the same row had significant differences. ND = not detected.