Table 1.
Omega-3 fatty acid content in different by-products of pelagic species (g/100 g of total fatty acids).
| Fishbone | Gills | Guts | Head | Liver | Skin | Ref. | ||
|---|---|---|---|---|---|---|---|---|
| Alaska Pink Salmon (Oncorhynchus gorbuscha) |
C18:3n-3 | - | - | 0.95 | 1.10 | - | - | [28] |
| C20:5n-3 | - | - | 10.93 | 7.56 | - | - | ||
| C22:5n-3 | - | - | 2.83 | 2.33 | - | - | ||
| C22:6n-3 | - | - | 17.32 | 11.77 | - | - | ||
| DHA/EPA | - | - | 1.59 | 1.56 | - | - | ||
| Alaska Walleye Pollock (Theragra chalcogramma) | C18:3n-3 | - | - | 0.47 | 0.34 | - | 0.33 | |
| C20:5n-3 | - | - | 14.99 | 12.47 | - | 16.85 | ||
| C22:5n-3 | - | - | 1.29 | 0.55 | - | 0.36 | ||
| C22:6n-3 | - | - | 6.41 | 11.82 | - | 12.89 | ||
| DHA/EPA | - | - | 0.43 | 0.95 | - | 0.77 | ||
| Black rockfish (Sebastes melanops) |
C18:3n-3 | - | - | - | 0.51 | 0.14 | - | [29] |
| C20:5n-3 | - | - | - | 9.92 | 4.43 | - | ||
| C22:5n-3 | - | - | - | 1.65 | 1.38 | - | ||
| C22:6n-3 | - | - | - | 9.21 | 4.78 | - | ||
| DHA/EPA | - | - | - | 0.93 | 1.08 | - | ||
| Black Sea Anchovy (Engraulis encrasicholus) |
C18:3n-3 | - | - | 1.31 | 1.62 | - | - | [30] |
| C20:5n-3 | - | - | 6.93 | 10.97 | - | - | ||
| C22:6n-3 | - | - | 18.88 | 21.34 | - | - | ||
| DHA/EPA | - | - | 2.72 | 1.95 | - | - | ||
| Pacific ocean perch (Sebastes alutus) | C20:5n-3 | - | - | 7.1 | 9.9 | - | - | [25] |
| C22:6n-3 | - | - | 3.3 | 4.7 | - | - | ||
| DHA/EPA | - | - | 0.47 | 0.48 | - | - | ||
| Sardine (Sardinella lemuru) |
C20:5n-3 | - | - | 1.73 | 1.84 | 2.76 | - | [31] |
| C22:6n-3 | - | - | 11.87 | 15.95 | 12.97 | - | ||
| DHA/EPA | - | - | 6.86 | 8.67 | 4.70 | |||
| Salmon (Salmo salar) |
C18:3n-3 | - | - | 1.14 | - | - | - | [32] |
| C20:5n-3 | - | - | 7.91 | - | - | - | ||
| C22:5n-3 | - | - | 3.48 | - | - | - | ||
| C22:6n-3 | - | - | 6.99 | - | - | - | ||
| DHA/EPA | - | - | 0.88 | - | - | - | ||
| Sea bream (Sparus aurata) |
C18:3n-3 | 3.86 | 4.05 | 4.71 | 3.86 | 4.13 | 4.73 | [8] |
| C20:5n-3 | 2.77 | 1.92 | 1.83 | 2.78 | 1.91 | 2.03 | ||
| C22:5n-3 | 2.00 | 1.42 | 1.55 | 2.00 | 2.04 | 1.66 | ||
| C22:6n-3 | 4.58 | 4.09 | 3.51 | 5.00 | 4.90 | 3.98 | ||
| DHA/EPA | 1.65 | 2.13 | 1.91 | 1.80 | 2.57 | 1.96 | ||
| Sea bass (Dicentrarchus labrax) |
C18:3n-3 | 3.77 | 2.70 | 3.30 | 3.69 | 2.00 | 3.10 | [33] |
| C20:5n-3 | 3.37 | 4.40 | 4.20 | 3.50 | 3.00 | 5.10 | ||
| C22:5n-3 | 1.06 | 0.96 | 1.10 | 1.20 | 0.84 | 1.20 | ||
| C22:6n-3 | 4.40 | 6.50 | 5.30 | 5.50 | 4.50 | 7.00 | ||
| DHA/EPA | 1.31 | 1.48 | 1.26 | 1.57 | 1.50 | 1.37 | ||
| Tuna (Euthynnus affinis) |
C20:5n-3 | - | - | 2.71 | 1.48 | 1.70 | - | [34] |
| C22:6n-3 | - | - | 14.31 | 15.70 | 14.18 | - | ||
| DHA/EPA | - | - | 5.28 | 10.61 | 8.34 | - |
-: not analyzed.