Table 4.
Fatty acid composition of N. salina cultivated in flat-panel photo-bioreactor. Different letters indicate significant differences (p < 0.05).
| Cultivation Time (Day) | 3 | 7 | 14 | 21 |
|---|---|---|---|---|
| Fatty Acid | ||||
| 14:0 | 5.28 ± 0.57 | 4.20 ± 0.50 | 3.58 ± 0.37 | 3.37 ± 0.37 |
| 15:0 | 0.67 ± 0.44 | 0.38 ± 0.04 | 0.26 ± 0.04 | 0.24 ± 0.04 |
| 16:0 | 24.9 ± 2.28 a | 19.9 ± 0.59 b | 18.5 ± 0.19 b | 17.4 ± 0.24 b |
| 16:1 (n-7) | 26.5 ± 2.59 a | 28.7 ± 0.30 a | 28.1 ± 0.44 a | 26.4 ± 0.19 a |
| 16:2 (n-4) | 0.18 ± 0.03 | 0.23 ± 0.02 | 0.10 ± 0.02 | 0.10 ± 0.00 |
| 16:3 (n-4) | 0.20 ± 0.01 | 0.45 ± 0.02 | 0.22 ± 0.03 | 0.10 ± 0.02 |
| 16:4 (n-1) | 0.44 ± 0.03 | 1.01 ± 0.02 | 0.50 ± 0.02 | 0.21 ± 0.02 |
| 18:0 | 1.91 ± 0.22 | 0.37 ± 0.08 | 0.26 ± 0.03 | 0.47 ± 0.02 |
| 18:1 (n-9) | 6.06 ± 0.76 | 3.93 ± 0.19 | 1.87 ± 0.10 | 1.76 ± 0.21 |
| 18:1 (n-11) | 2.62 ± 0.20 | 1.31 ± 0.06 | 0.94 ± 0.03 | 0.24 ± 0.00 |
| 18:2 (n-6) | 2.39 ± 0.23 | 1.30 ± 0.06 | 0.16 ± 0.01 | 0.88 ± 0.03 |
| 18:3 (n-3) | 0.10 ± 0.01 | nd | nd | nd |
| 20:1 (n-9) | 0.10 ± 0.02 | 0.11 ± 0.01 | nd | nd |
| 20:1(n-7) | 0.24 ± 0.02 | nd | 0.14 ± 0.01 | nd |
| 20:4 (n-6) | 0.05 ± 0.02 | nd | nd | 0.13 ± 0.01 |
| 20:3 (n-3) | 1.10 ± 0.03 | 6.45 ± 0.06 | 3.38 ± 0.05 | 2.75 ± 0.03 |
| 20:4 (n-3) | 0.61 ± 0.01 | 0.10 ± 0.08 | 1.02 ± 0.34 | 0.91 ± 0.01 |
| 20:5 (n-3) | 23.9 ± 1.78 a | 30.1 ± 1.21 b | 39.3 ± 1.10 c | 44.2 ± 2.30 d |
| 22:1 (n-11) | nd | 0.16 ± 0.03 | 0.10 ± 0.03 | 0.12 ± 0.03 |
| 21:5 (n-3) | 1.82 ± 0.39 | 0.81 ± 0.35 | 1.03 ± 0.01 | 0.09 ± 0.01 |
| 22:5 (n-3) | 0.32 ± 0.05 | 0.23 ± 0.03 | 0.07 ± 0.01 | 0.06 ± 0.02 |
| 22:6 (n-3) | nd | 0.12 ± 0.20 | 0.10 ± 0.04 | 0.10 ± 0.01 |
| ∑ SAFA | 32.0 ± 3.10 a | 24.5 ± 1.21 b | 22.3 ± 0.72 b | 21.2 ± 0.74 b |
| ∑ n-3 | 27.8 ± 2.30 a | 37.7 ± 2.00 b | 44.9 ± 1.52 bc | 48.1 ± 2.43 c |
Data are shown as % of fatty acid in total fatty acid composition. Total saturated fatty acids (Σ SAFA), n-3 poly unsaturated fatty acid (∑ n-3); nd, not detected. Different letters in the same row represent significant difference (p < 0.05) for 16:0, 16:1 (n-7), 20:5 (n-3), total SAFA and n-3 fatty acids.