Refined silflower oil
Further refined oils
Further refined oils
Further refined oils
Sil-1 Sil-2 Sil-3
Oil analysis
Chlorophyll as pheophytin a (mg/kg) 725.5 ± 2.4 a1
4.2 ± 0.1 d
474.5 ± 0.1 b
38.5 ± 3.7 c
Peroxide value (meq/kg)
26.00 ± 1.56 a
1.40 ± 0.16 b
22.78 ± 0.86 a
4.32 ± 0.10 b
Conjugated diene value (mmol/L)
0.61 ± 0.01 a
0.26 ± 0.01 b
0.37 ± 0.03 b
0.33 ± 0.06 b
Total phenolics (mg GAE/g sample)
1.10 ± 0.40 a
0.53 ± 0.18 b
0.59 ± 0.17 b
0.79 ± 0.07 ab
ABTS assay, after 5 min, µmol TE/g 0.58 ± 0.02 c1 0.92 ± 0.01 a
0.55 ± 0.02 c
0.70 ± 0.06 b
Total polar compounds (TPC, %, w/w)
11.35 ± 0.01 a
10.06 ± 0.12 b
10.01 ± 0.10 bc
9.66 ± 0.21 c
α-Tocopherols (μg/g)
333.4 ± 44.8 bc
489.2 ± 22.3 a
242.2 ± 1.5 c
367.2 ± 1.2 b
Free fatty acid (%)
0.13 ± 0.01 b
0.25 ± 0.01 a
0.09 ± 0.00 b
0.12 ± 0.01 b
Oxidative and thermal stabilities Oxidative and thermal stabilities Oxidative and thermal stabilities
Oxidative Stability Index (OSI), 110 °C (h) 2.10 ± 0.01 ab 1.69 ± 0.02 bc
1.42 ± 0.04 c
2.27 ± 0.28 a
Thermal stability (onset temperature of degradation), °C 277.8 ± 1.3 b 289.5 ± 9.1 ab
287.6 ± 1.7 ab
295.6 ± 0.6 a