Chemical properties of tuna liver oil with different extraction methods.
| Property | Subcritical DE | Supercritical CO2 |
|---|---|---|
| Acid value (mg KOH g−1) | 1.87 ± 0.26a | 1.51 ± 0.13a |
| Peroxide value (mmol kg−1) | 2.18 ± 0.11a | 2.21 ± 0.20a |
| Non-saponification matter (%) | 2.01 ± 0.13a | 1.16 ± 0.08b |
| Moisture and volatile matter (%) | 0.86 ± 0.08a | 0.15 ± 0.03b |
| Iodine value (g/100 g) | 147.2 ± 2.8a | 148.4 ± 1.7a |
| Insoluble impurities (%) | 1.22 ± 0.09a | 1.11 ± 0.13a |
a
Means followed by different letters in the same row demonstrated significant difference (p < 0.05). Each value is the mean ± standard deviation of triplicate determinations.
b
Means followed by different letters in the same row demonstrated significant difference (p < 0.05). Each value is the mean ± standard deviation of triplicate determinations.