Table 2.
Fatty acid composition of Antarctic macroalgae.
| Fatty acid | Concentration (%) | ||
|---|---|---|---|
| Adenocystis utricularis | Curdiea racovitzae | Georgiella confluens | |
| Lauric acid (12:0) | – | 1.33 ± 0.00 | – |
| Myristic acid (14:0) | 6.46 ± 0.01 | 1.85 ± 0.01 | 2.24 ± 0.02 |
| Pentadecanoic acid (C15:0) | 0.23 ± 0.00 | 0.24 ± 0.00 | 0.34 ± 0.00 |
| Palmitic acid (C16:0) | 19.15 ± 0.04 | 20.62 ± 0.11 | 21.77 ± 0.20 |
| Palmitoleic acid (C16:1) | 0.39 ± 0.00 | 1.39 ± 0.00 | 5.28 ± 0.03 |
| Heptadecanoic acid (C17:0) | 0.51 ± 0.00 | 0.49 ± 0.00 | – |
| Heptadecenoic acid (17:1) | 0.71 ± 0.00 | – | – |
| Stearic acid (C18:0) | 2.19 ± 0.01 | 2.92 ± 0.02 | 1.41 ± 0.00 |
| Oleic acid (C18:1n9c) | 8.25 ± 0.01 | 1.26 ± 0.00 | 1.29 ± 0.01 |
| Linoleic acid (C18:2n6c) | 9.36 ± 0.01 | 1.56 ± 0.02 | 1.30 ± 0.00 |
| γ-Linolenic acid (C18:3n6) | 0.55 ± 0.00 | 0.86 ± 0.00 | 0.78 ± 0.00 |
| α-Linolenic acid (C18:3n3) | 9.99 ± 0.02 | – | 3.05 ± 0.01 |
| Arachidic acid (C20:0) | 0.52 ± 0.00 | – | – |
| cis-11,14-Eicosadienoic acid (C20:2n6) | 0.27 ± 0.00 | 0.10 ± 0.00 | – |
| cis-8,11,14-Eicosatrienoic acid (C20:3n6) | 0.81 ± 0.00 | 1.10 ± 0.00 | 0.53 ± 0.00 |
| Arachidonic acid (C20:4n6) | 9.05 ± 0.00 | 15.06 ± 0.08 | 1.70 ± 0.01 |
| cis-11,14,17-Eicosatrienoic acid (C20:3n3) | 0.45 ± 0.00 | – | – |
| Eicosapentaenoic acid (C20:5n3) | 30.56 ± 0.03 | 51.10 ± 0.26 | 59.39 ± 0.54 |
| Behenic acid (C22:0) | 0.35 ± 0.00 | – | – |
| Docosahexaenoic acid (C22:6n3) | – | – | 0.93 ± 0.01 |
| Lignoceric acid (C24:0) | 0.04 ± 0.00 | – | – |
| Nervonic acid (24:1n9) | 0.11 ± 0.00 | 0.08 ± 0.00 | – |
| Σn-3 | 41.0 | 51.10 | 63.37 |
| Σn-6 | 20.04 | 18.68 | 4.31 |
Σ: Sum of all n-3 or n-6 founded to each alga. Fatty acid composition was determined by GC-FID analysis. Data, expressed as mole percent, are means of 3 independent experiments ± SD. – Not detected.