Table 3.
Fatty acid composition in percentage of total fatty acid methyl esters (FAMEs) of different microalgal strains collected in South East Queensland, Australia after cultivation to nitrate depletion and an additional 3 days of starvation.
| Fatty acids | Bacillariophyta sp. B3 | Bacillariophyta sp. SI1a | Cylindrotheca closterium SI1c | Thalassiosira rotula SI2a | Navicula sp. SI2d | Tetraselmis sp. M8 | Phaeodactylum tricornotum | Chlorella sp. BR2 | Dunaliella tertiolecta | Nitzschia sp. CP2a | Cymbella sp. CP2b | Cymbella cistuliformis CP2c | Nitzschia sp. CP3a | Navicula sp. CP6a |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lauric (C12:0) | 1.12 | 1.64 | 1.59 | 2.17 | 2.18 | 0.95 | 0.13 | 2.05 | 0.27 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Myristic (C14:0) | 21.32 | 0.74 | 0.63 | 0.66 | 0.81 | 0.93 | 8.74 | 1.65 | 0.47 | 5.96 | 9.56 | 6.73 | 5.33 | 4.88 |
| Palmitic (C16:0) | 23.64 | 0.88 | 0.23 | 1.27 | 1.12 | 28.33 | 29.31 | 31.68 | 19.87 | 30.10 | 37.65 | 30.22 | 28.82 | 37.04 |
| Palmitoleic (C16:1) | 0.45 | 1.43 | 4.66 | 1.19 | 1.37 | 1.79 | 0.21 | 4.71 | 0.35 | 31.57 | 38.26 | 21.31 | 27.28 | 15.75 |
| Hexadecadienoic (C16:2) | 5.08 | 13.72 | 8.97 | 3.18 | 6.56 | 14.59 | 0.43 | 1.42 | 1.44 | 2.80 | 1.60 | 2.49 | 3.33 | 1.63 |
| Hexadecatrienoic (C16:3) | 4.80 | 23.29 | 23.28 | 2.32 | 6.92 | 18.27 | 5.59 | 8.84 | 4.22 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Hexadecatetraenoic (C16:4) | 0.72 | 1.85 | 1.77 | 0.93 | 2.06 | 0.25 | 0.01 | 0.04 | 23.30 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Stearic (C18:0) | 25.15 | 39.13 | 35.21 | 57.73 | 52.32 | 19.79 | 14.81 | 29.28 | 16.65 | 5.71 | 6.56 | 20.39 | 5.25 | 28.74 |
| Oleic (C18:1) | 3.57 | 5.57 | 10.11 | 19.24 | 18.07 | 8.08 | 7.13 | 11.86 | 0.82 | 1.97 | 1.18 | 2.37 | 2.92 | 2.07 |
| Linoleic (C18:2) | 1.48 | 0.21 | 0.17 | 0.09 | 0.05 | 0.24 | 1.76 | 6.12 | 1.85 | 0.80 | 0.28 | 1.21 | 1.33 | 0.38 |
| Linolenic (C18:3) | 5.64 | 6.90 | 10.83 | 9.95 | 4.23 | 3.41 | 0.34 | 0.39 | 29.98 | 1.79 | 0.09 | 0.61 | 1.16 | 0.26 |
| Stearidonic (C18:4) | 0.10 | 0.15 | 0.20 | 0.10 | 0.15 | 0.14 | 0.00 | 0.13 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Arachidic (C20:0) | 0.52 | 0.18 | 0.42 | 0.17 | 0.11 | 0.26 | 0.60 | 1.28 | 0.57 | 0.19 | 0.20 | 0.77 | 0.13 | 0.95 |
| Arachidonic (C20:4) | 0.12 | 3.20 | 0.67 | 0.04 | 0.13 | 1.54 | 0.00 | 0.04 | 0.00 | 5.28 | 0.68 | 4.80 | 8.85 | 1.87 |
| Eicosapentaenoic (EPA) (C20:5) | 5.71 | 0.28 | 0.38 | 0.21 | 3.44 | 0.28 | 30.85 | 0.08 | 0.12 | 12.46 | 3.94 | 8.75 | 14.49 | 6.16 |
| Behenic (C22:0) | 0.15 | 0.40 | 0.27 | 0.18 | 0.19 | 0.34 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Docosatetraenoic (C22:4) | 0.26 | 0.25 | 0.29 | 0.32 | 0.18 | 0.44 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Docosahexaenoic (DHA)(C22:6) | 0.17 | 0.17 | 0.34 | 0.26 | 0.09 | 0.36 | 0.00 | 0.00 | 0.01 | 1.36 | 0.00 | 0.34 | 1.10 | 0.28 |
| Saturated fatty acids (%) | 71.90 | 42.96 | 38.35 | 62.18 | 56.73 | 50.60 | 53.59 | 65.93 | 37.82 | 41.96 | 53.97 | 58.11 | 39.53 | 71.61 |
| Unsaturated fatty acids (%) | 28.10 | 57.04 | 61.65 | 37.82 | 43.27 | 49.40 | 46.31 | 33.64 | 62.08 | 58.04 | 46.03 | 41.89 | 60.47 | 28.39 |
| Total fatty acids (μg mL−1) | 28.91 | 26.91 | 35.36 | 24.56 | 16.41 | 47.65 | 22.85 | 9.27 | 17.69 | 38.21 | 40.58 | 11.13 | 50.53 | 7.90 |
| Lipid productivity (μg mL−1 day−1) | 3.21 | 2.99 | 3.93 | 2.73 | 1.82 | 5.29 | 2.54 | 1.03 | 1.97 | 4.25 | 4.51 | 1.24 | 5.62 | 0.88 |
Shown are mean values from three separately-grown cultures each.