Open Access
Table 2
Fatty acid composition of oil samples extracted by different methods.
| Fatty acids | Peak area (%) | |||
|---|---|---|---|---|
| Supercritical (CO2) extraction | Hydraulic-press extraction | Screw-press extraction | Solvent extraction | |
| Myristic acid | 0.13 ± 0.01 | 0.13 ± 0.01 | 0.14 ± 0.02 | 0.13 ± 0.01 |
| Palmitic acid | 20.52 ± 0.87 | 19.95 ± 0.24 | 19.93 ± 0.71 | 19.50 ± 0.90 |
| Pamitoleic acid | 0.41 ± 0.07 | 0.53 ± 0.05 | 0.47 ± 0.03 | 0.43 ± 0.01 |
| Margaric acid | 0.09 ± 0.01 | 0.10 ± 0.04 | 0.13 ± 0.01 | 0.13 ± 0.02 |
| Stearic acid | 5.39 ± 0.61 | 7.45 ± 0.72 | 7.12 ± 0.64 | 6.78 ± 0.34 |
| Oleic acid | 29.38 ± 1.13 | 27.65 ± 1.01 | 27.44 ± 1.34 | 28.07 ± 1.07 |
| Linoleic acid | 39.91 ± 1.65 | 37.44 ± 1.59 | 36.95 ± 1.35 | 36.53 ± 1.81 |
| Linoleic acids (conjugated) | 0.07 ± 0.01 | 1.44 ± 0.27 | 1.52 ± 0.22 | 1.41 ± 0.08 |
| Linolenic acid | 1.20 ± 0.17 | 2.18 ± 0.10 | 2.30 ± 0.31 | 2.31 ± 0.11 |
| Arachidic acid | 0.40 ± 0.12 | 0.37 ± 0.02 | 0.85 ± 0.07 | 0.81 ± 0.14 |
| Behenic acid | 0.10 ± 0.00 | 0.21 ± 0.03 | 0.33 ± 0.07 | 0.30 ± 0.07 |
| Lignoceric acid | ND | ND | ND | 0.13 ± 0.01 |
| Others | 2.80 | 2.55 | 2.82 | 3.47 |
| Σ SFA | 26.63 | 28.20 | 28.50 | 26.97 |
| Σ MUFA | 29.79 | 28.18 | 27.91 | 28.50 |
| Σ PUFA | 41.18 | 41.06 | 40.77 | 40.25 |
| Σ UFA | 70.97 | 69.24 | 68.68 | 68.75 |
| Σ UFA/ Σ SFA | 2.66 | 2.45 | 2.4 | 2.54 |
| Cox value | 4.67 | 4.25 | 4.73 | 4.69 |
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