Table 2.
Fatty acid profile percentage (w w−1) and total oil content percentage (w w−1) of Scenedesmus obliquus biomass for the different CO2 concentrations percentage (v v−1). (Bold values: the more important fatty acids for each air/CO2 concentration)
| CO2 concentration % (v/v) | ||||||
|---|---|---|---|---|---|---|
| Fatty acid profile % (w/w) | Air | 2.5 | 5 | 7.5 | 10 | 15 |
| C14:0 | 0.5 ± 0.1 | 0.3 ± 0.0 | 0.3 ± 0.1 | 0.3 ± 0.1 | 0.4 ± 0.1 | 0.4 ± 0.0 |
| C16:0 | 24.7 ± 1.3 | 24.9 ± 0.1 | 23.6 ± 0.1 | 22.0 ± 0.4 | 24.3 ± 1.4 | 25.8 ± 0.1 |
| C16:1 | 1.4 ± 0.1 | 1.4 ± 0.1 | 1.3 ± 0.3 | 1.9 ± 0.0 | 1.5 ± 0.3 | 1.1 ± 0.0 |
| C18:0 | 2.2 ± 0.4 | 4.4 ± 0.1 | 3.4 ± 0.2 | 3.3 ± 0.1 | 2.8 ± 0.4 | 3.3 ± 0.0 |
| C18:1 | 42.8 ± 3.8 | 40.1 ± 0.3 | 42.8 ± 1.5 | 42.0 ± 0.5 | 41.6 ± 2.6 | 41.2 ± 0.2 |
| C18:2 | 9.9 ± 1.3 | 12.6 ± 0.1 | 10.3 ± 0.2 | 10.3 ± 0.0 | 9.0 ± 1.4 | 9.1 ± 0.1 |
| C18:3 | 8.7 ± 3.1 | 7.1 ± 0.2 | 9.4 ± 1.0 | 9.3 ± 0.1 | 9.7 ± 2.4 | 7.9 ± 0.1 |
| C20:0 | 0.2 ± 0.1 | 0.6 ± 0.0 | 0.2 ± 0.0 | 0.2 ± 0.0 | 0.2 ± 0.1 | 0.7 ± 0.0 |
| C20:1 | 0.1 ± 0.0 | ‐ | ‐ | ‐ | ‐ | ‐ |
| C22:0 | 0.1 ± 0.0 | 0.2 ± 0.0 | 0.2 ± 0.0 | 0.2 ± 0.0 | 0.2 ± 0.0 | 0.2 ± 0.0 |
| C22:1 | ‐ | 0.2 ± 0.1 | ‐ | ‐ | ‐ | 0.8 ± 0.0 |
| C24:0 | 0.1 ± 0.0 | ‐ | ‐ | ‐ | ‐ | ‐ |
| Other | 9.3 ± 1.3 | 8.2 ± 0.2 | 8.5 ± 0.1 | 10.5± 0.7 | 10.3± 0.9 | 9.5 ± 0.1 |
| Total oil content % (w/w) | 19.6 ± 3.4 | 26.3 ± 0.3 | 22.4 ± 6.9 | ‐ | 17.6 ± 2.3 | 20.3 ± 2.1 |