Table 1.
Biomass, total fatty acid (TFA) and eicosapentaenoic acid (EPA) productivities per volume (Pvol), panel area (Parea, panel) and ground area (Parea, ground) and the yields on light for the three Phaeodactylum tricornutum strains (Fito, M28 and B58) for the three seasons (spring, summer and autumn) during a six-months repeated-batch cultivation in flat panel outdoor bioreactors in Bergen, western Norway. Values are average and standard deviation of the respective batch values of each season (biomass: n = 6 [5 for Fito], 6 and 3, TFA, EPA: n = 5 [4 for Fito], 6 and 3 for spring, summer and autumn, respectively).
| Spring |
Summer |
Autumn |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| Biomass | Fito | M28 | B58 | Fito | M28 | B58 | Fito | M28 | B58 |
| Pvol (g L− 1 d− 1) | 0.25 ± 0.03 | 0.26 ± 0.04 | 0.30 ± 0.06 | 0.18 ± 0.03 | 0.18 ± 0.03 | 0.18 ± 0.02 | 0.16 ± 0.01 | 0.09 ± 0.02 | 0.16 ± 0.01 |
| Parea, panel (g m− 2 d− 1) | 9.3 ± 0.9 | 9.5 ± 1.5 | 10.9 ± 2.1 | 6.7 ± 1.2 | 6.5 ± 1.3 | 6.5 ± 0.9 | 6.1 ± 0.5 | 3.4 ± 0.9 | 6.0 ± 0.5 |
| Parea, ground (g m− 2 d− 1) | 7.3 ± 0.7 | 7.5 ± 1.2 | 8.7 ± 1.7 | 5.3 ± 1.0 | 5.2 ± 1.0 | 5.2 ± 0.7 | 4.8 ± 0.4 | 2.7 ± 0.7 | 4.7 ± 0.4 |
| Yield light (g mol− 1 photon) | 0.25 ± 0.05 | 0.27 ± 0.04 | 0.31 ± 0.05 | 0.36 ± 0.08 | 0.35 ± 0.09 | 0.35 ± 0.07 | 0.31 ± 0.06 | 0.16 ± 0.01 | 0.30 ± 0.04 |
| TFA | |||||||||
| Pvol (mg L− 1 d− 1) | 38.7 ± 4.5 | 31.5 ± 5.0 | 43.8 ± 7.9 | 26.7 ± 2.7 | 21.5 ± 3.9 | 24.0 ± 3.0 | 25.7 ± 1.3 | 10.2 ± 3.3 | 22.3 ± 1.5 |
| Parea, panel (mg m− 2 d− 1) | 1426 ± 167 | 1162 ± 185 | 1613 ± 293 | 985 ± 99 | 791 ± 143 | 883 ± 109 | 947 ± 49 | 375 ± 123 | 821 ± 55 |
| Parea, ground (mg m− 2 d− 1) | 1129 ± 132 | 920 ± 146 | 1277 ± 232 | 780 ± 78 | 626 ± 113 | 699 ± 87 | 750 ± 38 | 297 ± 97 | 650 ± 44 |
| Yield light (mg mol− 1 photon) | 35.3 ± 2.9 | 31.3 ± 5.5 | 43.3 ± 7.7 | 52.7 ± 10.1 | 43.5 ± 13.2 | 47.9 ± 9.4 | 48.1 ± 9.6 | 17.3 ± 3.2 | 41.3 ± 5.2 |
| EPA | |||||||||
| Pvol (mg L− 1 d− 1) | 11.8 ± 1.4 | 8.0 ± 1.8 | 9.2 ± 1.1 | 8.8 ± 0.7 | 6.2 ± 1.3 | 6.0 ± 0.7 | 8.7 ± 0.9 | 2.8 ± 1.1 | 5.6 ± 0.5 |
| Parea, panel (mg m− 2 d− 1) | 434 ± 51 | 295 ± 67 | 340 ± 40 | 325 ± 25 | 227 ± 48 | 221 ± 27 | 321 ± 34 | 102 ± 40 | 208 ± 17 |
| Parea, ground (mg m− 2 d− 1) | 344 ± 40 | 234 ± 53 | 269 ± 32 | 257 ± 20 | 180 ± 38 | 175 ± 21 | 254 ± 27 | 81 ± 32 | 164 ± 14 |
| Yield light (mg mol− 1 photon) | 10.7 ± 0.8 | 8.0 ± 2.2 | 9.2 ± 1.9 | 17.3 ± 2.7 | 12.5 ± 4.1 | 12.0 ± 2.5 | 16.2 ± 2.4 | 4.7 ± 1.2 | 10.5 ± 1.8 |