Table 2.
Fatty acid composition in the polar and neutral lipid fractions isolated from Western diets.
| Fatty Acid (mg/g) | Fresh Cod | Pork | Pork n-3 TAG | Pork n-3 PL |
|---|---|---|---|---|
| Polar lipid fraction | ||||
| Sum SFA | 1.20 ± 0.02 | 0.76 ± 0.01 | 1.64 ± 0.07 | 2.12 ± 0.08 |
| Sum MUFA | 0.73 ± 0.03 | 0.474 ± 0.007 | 1.20 ± 0.06 | 1.014 ± 0.006 |
| LA 18:2n-6 | 0.100 ± 0.009 | 0.76 ± 0.01 | 1.07 ± 0.04 | 0.91 ± 0.03 |
| ARA 20:4n-6 | 0.097 ± 0.002 | 0.236 ± 0.005 | 0.257 ± 0.009 | 0.312 ± 0.008 |
| Sum n-6 | 0.22 ± 0.01 | 1.06 ± 0.02 | 1.42 ± 0.05 | 1.23 ± 0.04 |
| ALA 18:3n-3 | 0.020 ± 0.001 | 0.0240 ± 0.0001 | 0.067 ± 0.003 | 0.037 ± 0.006 |
| EPA 20:5n-3 | 0.690 ± 0.007 | 0.02763 ± 0.0004 | 0.043 ± 0.003 | 0.74 ± 0.06 |
| DHA 22:6n-3 | 1.78 ± 0.01 | 0.015 ± 0.001 | 0.037 ± 0.003 | 2.0 ± 0.1 |
| Sum EPA+DHA | 2.47 ± 0.02 | 0.043 ± 0.001 | 0.080 ± 0.005 | 2.7 ± 0.2 |
| Sum n-3 | 2.61 ± 0.03 | 0.130 ± 0.002 | 0.22 ± 0.01 | 2.8 ± 0.2 |
| Sum identified FAs | 4.8 ± 0.1 | 2.44 ± 0.04 | 4.5 ± 0.2 | 7.2 ± 0.3 |
| n-6:n-3 ratio | 0.085 ± 0.005 | 8.2 ± 0.2 | 6.4 ± 0.1 | 0.43 ± 0.03 |
| EPA:DHA ratio | 0.388 ± 0.001 | 1.80 ± 0.05 | 2.2 ± 0.3 | 0.376 ± 0.008 |
| ARA:EPA ratio | 0.14 ± 0.001 | 8.53 ± 0.04 | 6.0 ± 0.3 | 0.43 ± 0.04 |
| Neutral lipid fraction | ||||
| Sum SFA | 76 ± 1 | 76 ± 2 | 71 ± 2 | 72 ± 0.5 |
| Sum MUFA | 58 ± 2 | 60 ± 2 | 63 ± 2 | 57.7 ± 0.8 |
| LA 18:2n-6 | 24 ± 1 | 23.1 ± 0.4 | 22.1 ± 0.7 | 22.5 ± 0.5 |
| ARA 20:4n-6 | 0.188 ± 0.007 | 0.302 ± 0.009 | 0.36 ± 0.02 | 0.32 ± 0.02 |
| Sum n-6 | 24 ± 1 | 23.7 ± 0.4 | 23.0 ± 0.8 | 23.0 ± 0.5 |
| ALA 18:3n-3 | 4.0 ± 0.2 | 3.8 ± 0.2 | 3.7 ± 0.1 | 3.86 ± 0.04 |
| EPA 20:5n-3 | 0.15 ± 0.01 | <0.01 | 1.17 ± 0.06 | 0.15 ± 0.01 |
| DHA 22:6n-3 | 0.16 ± 0.01 | <0.01 | 1.64 ± 0.09 | 0.096 ± 0.004 |
| Sum EPA+DHA | 0.31 ± 0.01 | <0.01 | 2.8 ± 0.2 | 0.24 ± 0.01 |
| Sum n-3 | 4.7 ± 0.2 | 4.1 ± 0.2 | 7.3 ± 0.3 | 4.51 ± 0.05 |
| Sum identified FAs | 164 ± 5 | 163 ± 4 | 164 ± 4 | 157 ± 2 |
| n-6:n-3 ratio | 5.2 ± 0.1 | 5.8 ± 0.3 | 3.2 ± 0.2 | 5.00 ± 0.06 |
| EPA:DHA ratio | 0.93 ± 0.15 | * | 0.725 ± 0.007 | 1.6 ± 0.1 |
| ARA:EPA ratio | 1.3 ± 0.1 | * | 0.31 ± 0.03 | 2.1 ± 0.1 |
Results are presented as means ± SEMs of three samples and indicate mg FAs in the polar and neutral lipid fractions/g Western diet. * not possible to calculate; EPA and DHA levels are under the limit of quantification (<0.01 mg/g). Abbreviations: SFA, saturated fatty acids; MUFA, monounsaturated fatty acids; LA, linoleic acid; ARA, arachidonic acid; ALA, alpha-linolenic acid; EPA, eicosapentaenoic acid; DHA, docosahexaenoic acid; FAs, fatty acids.