Table 7.
Fatty acid (% of the glycolipids FAs mixture) of U. armoricana and S. chordalis.
| Fatty Acid (FAs) a | ECL c | U. armoricana b (%) | S. chordalis b (%) |
|---|---|---|---|
| Saturated fatty acids (SFAs) | |||
| 12:0 | 12.00 | 0.04 | nd b |
| 14:0 | 14.00 | 0.6 | 3.2 |
| br-15:0 | 14.46 | 0.04 | nd b |
| iso-15:0 | 14.53 | 0.08 | 0.1 |
| ai-15:0 | 14.63 | 0.5 | nd b |
| 15:0 | 15.00 | 0.3 | 0.4 |
| 16:0 | 16.00 | 64.2 | 40.0 |
| ai-17:0 | 16.72 | 0.5 | nd b |
| 17:0 | 17.00 | 2.3 | 5.1 |
| 18:0 | 18.00 | nd b | 3.1 |
| 19:0 | 19.00 | 1.2 | 9.9 |
| 20:0 | 20.00 | 0.2 | 0.1 |
| 21:0 | 21.00 | 2.4 | nd b |
| 22:0 | 22.00 | 2.3 | 0.1 |
| 23 | 23.00 | 0.1 | nd b |
| 24:0 | 24.00 | 0.5 | 0.7 |
| Total SFAs | 75.2 | 62.7 | |
| Monounsaturated fatty acids (MUFAs) | |||
| 13:1 | 12.72 | 1.5 | nd b |
| 15:1 | 14.57 | 2.5 | nd b |
| 16:1n-5 | 15.86 | nd b | 4.1 |
| 16:1n-9 | 15.79 | 0.5 | nd b |
| 16:1n-7 | 15.94 | 2.1 | nd b |
| 17:1n-5 | 16.80 | nd b | 15.4 |
| 17:1n-4 | 16.88 | nd b | 0.5 |
| 18:1n-9 | 17.71 | nd b | 3.6 |
| 18:1n-7 | 17.78 | 3.5 | nd b |
| 18:1n-5 | 17.84 | nd b | 1.6 |
| 19:1 | 18.86 | nd b | 1.4 |
| Total MUFAs | 10.1 | 26.6 | |
| Polyunsaturated fatty acids (PUFAs) | |||
| 16:4n-3 | 15.61 | 2.1 | nd b |
| 18:4n-3 | 17.70 | 0.2 | nd b |
| 18:3n-3 | 17.77 | 3.5 | nd b |
| 18:2 | 17.79 | nd b | 0.2 |
| 18:2n-6 | 17.80 | 0.6 | nd b |
| 18:2n-3 | 17.87 | 1.8 | nd b |
| 20:5n-3 | 19.21 | nd b | 1.2 |
| 20:4n-6 | 19.32 | nd b | 2.1 |
| 22:6n-3 | 21.54 | 0.9 | nd b |
| 22:3 | 21.83 | nd b | 0.9 |
| Total PUFAs | 9.0 | 4.5 | |
| Hydroxy fatty acids (Hydroxy FAs) | |||
| 2-Hydroxy FAs | |||
| 2-OH-14:0 | 15.57 | 0.04 | nd b |
| 2-OH-16:0 | 17.30 | 0.8 | 0.4 |
| 2-OH-18:0 | 19.23 | 0.2 | 2.7 |
| 2-OH-20:0 | 21.45 | 0.4 | nd b |
| 2-OH-22:0 | 23.26 | 0.2 | 0.6 |
| 3-Hydroxy FAs | |||
| 3-OH-16:0 | 17.64 | nd b | 0.5 |
| 3-OH-17:0 | 18.55 | 1.5 | 0.9 |
| 3-OH-18:0 | 19.46 | 0.3 | nd b |
| Total Hydroxy FAs | 3.5 | 5.1 | |
| Other compounds d | 2.2 | 0.7 | |
| Total n-6 PUFAs | 0.6 | 2.1 | |
| Total n-3 PUFAs | 8.5 | 1.2 | |
| Ratio n-6/n-3 | 0.07 | 1.7 | |
a Methyl ester (%) of the glycolipids FAs mixture; b nd, not detected; c ECLs, equivalent chain lengths; i, iso; ai, anteiso; br, branched. Values are the mean of three replicates (mean % dw); d Mass spectra of the compounds showed characteristic intense fragment ion at m/z 75.