Table 3.
Content of saturated (SFA), monounsaturated (MUFA) and polyunsaturated fatty acid (PUFA) in mg/g dry weight (DW) and as % of total fatty acids (data shown in parentheses) of backbones of salmon, cod and herring and their mechanically separated meats (MSM) and protein isolates.
| Fatty Acids | Herring | Salmon | Cod | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Backbone | MSM | Protein Isolate | Backbone | MSM | Protein Isolate | Backbone | MSM | Protein Isolate | |
| ∑SFA | 79.25 ± 8.74 c
(31.0 ± 0.37) |
68.33 ± 7.84 c (29.26 ± 0.66) |
11.56 ± 1.89 g (28.26 ± 2.31) |
219.7 ± 13.0 a
(57.2 ± 0.25) |
181.3 ± 4.89 b (55.9 ± 0.09) |
80.79 ± 0.66 c (57.8 ± 0.22) |
16.70 ± 2.83 f (48.4 ± 4.21) |
25.04 ± 1.71 e (45.8 ± 1.69) |
46.30 ± 2.02 d (25.5 ± 0.05) |
| ∑MUFA | 106 ± 18.75 a (41.4 ± 4.26) |
86.51 ± 9.07 a (37.0 ± 0.62) |
7.30 ± 0.53 e (17.91 ± 0.13) |
64.84 ± 4.78 b (16.8 ± 0.17) |
53.32 ± 1.38 b (16.4 ± 0.01) |
19.21 ± 0.12 c (13.7 ± 0.15) |
5.87 ± 0.42 f (17.0 ± 2.52) |
9.08 ± 0.00 d (16.6 ± 0.59) |
59.94 ± 3.06 b (33.0 ± 0.27) |
| ∑PUFA | 60.70 ± 4.69 b (23.8 ± 3.61) |
67.19 ± 3.87 b (28.8 ± 0.87) |
17.47 ± 1.72 d (42.84 ± 0.21) |
84.39 ± 6.64 a (21.9 ± 0.24) |
67.67 ± 1.48 b (20.8 ± 0.13) |
30.01 ± 0.23 c (21.47 ± 0.00) |
8.60 ± 0.30 e (24.8 ± 1.00) |
15.20 ± 2.40 d (27.7 ± 2.96) |
33.78 ± 1.45 c (21.1 ± 0.12) |
| C20:5 n3 (EPA) | 18.06 ± 2.05 a (7.0 ± 0.28) |
15.69 ± 2.11 a (6.7 ± 0.31) |
3.78 ± 0.37 b (9.26 ± 0.18) |
0.28 ± 0.00 d (0.07 ± 0.00) |
0.22 ± 0.00 e (0.07 ± 0.00) |
0.06 ± 0.00 f (0.04 ± 0.00) |
2.27 ± 0.05 c (6.5 ± 0.34) |
3.03 ± 0.62 bc (7.2 ± 0.84) |
3.98 ± 0.30 b (1.31 ± 0.02) |
| C22:5 n3 (DPA) | 0.49 ± 0.37 cd (0.31 ± 0.00) |
0.71 ± 0.09 c (0.30 ± 0.01) |
0.09 ± 0.01 f (0.23 ± 0.02) |
2.19 ± 0.20 a (0.05 ± 0.01) |
1.80 ± 0.00 b (0.05 ± 0.01) |
0.98 ± 0.00 c (0.7 ± 0.00) |
0.16 ± 0.00 e (0.46 ± 0.03) |
0.21 ± 0.02 d (0.48 ± 0.05) |
0.26 ± 0.04 d (0.97 ± 0.06) |
| C22:6 n3 (DHA) | 24.95 ± 1.78 a (9.7 ± 0.02) |
23.01 ± 2.99 a (9.85 ± 0.41) |
11.66 ± 0.85 c (28.6 ± 0.18) |
11.05 ± 0.90 cd (2.8 ± 0.05) |
9.92 ± 0.07 d (3.0 ± 0.10) |
8.89 ± 0.09 e (6.3 ± 0.04) |
5.21 ± 0.18 f (15.0 ± 0.60) |
8.77 ± 1.13 de (16.5 ± 2.36) |
9.07 ± 1.62 cde (0.76 ± 0.05) |
| ∑LC n-3 PUFA | 43.81 ± 3.85 a (17.1 ± 0.24) |
39.42 ± 5.21 a (16.8 ± 0.75) |
15.88 ± 1.27 c (38.1 ± 0.02) |
13.53 ± 1.11 bc (3.5 ± 0.06) |
11.96 ± 0.08 c (3.6 ± 0.11) |
9.94 ± 0.10 d (7.1 ± 0.04) |
7.65 ± 0.23 e (22.1 ± 0.98) |
13.35 ± 2.27 bc (24.3 ± 3.26) |
14.53 ± 0.15 b (3.0 ± 0.14) |
| ∑n-3 PUFA | 47.26 ± 3.34 a (18.0 ± 0.96) |
42.82 ± 5.60 a (18.32 ± 0.24) |
15.98 ± 0.85 c (39.2 ± 0.3) |
17.45 ± 1.42 bc (4.5 ± 0.08) |
15.03 ± 0.06 c (4.6 ± 0.13) |
11.10 ± 0.09 d (7.9 ± 0.03) |
7.74 ± 0.24 e (22.3 ± 0.98) |
13.40 ± 2.24 c (24.51 ± 3.27) |
17.73 ± 0.68 b (9.7 ± 0.13) |
| ∑n-6 PUFA | 19.56 ± 3.30 bc (7.4 ± 1.86) |
22.40 ± 1.00 b (9.62 ± 0.43) |
1.49 ± 0.33 d (3.64 ± 0.52) |
66.63 ± 5.19 a (17.3 ± 0.16) |
52.39 ± 1.34 a (16.17 ± 0.00) |
18.82 ± 0.11 c (13.46 ± 0.03) |
0.74 ± 0.05 e (2.14 ± 0.00) |
1.48 ± 0.02 d (2.72 ± 0.11) |
16.05 ± 0.77 c (8.8 ± 0.05) |
| n-3/n6 ratio | 2.42 ± 0.71 b | 1.90 ± 0.16 b | 10.88 ± 1.64 a | 0.26 ± 0.00 f | 0.28 ± 0.00 f | 0.59 ± 0.00 e | 10.42 ± 0.41 a | 9.03 ± 1.57 a | 1.10 ± 0.00 c |
Results are shown as mean ± SD (n = 3). LC n-3 PUFA (long chain n-3 PUFA) = EPA + DPA + DHA. Different small letters in each row show a significant difference (p < 0.05).