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Table 4 Calculated EPA and DHA production rates (μg L -1 day -1 ) during exponential growth for five species of microalgae based on specific growth rates and cellular PUFA content values from Table 2

From: On the potential application of polar and temperate marine microalgae for EPA and DHA production

  Irradiance EPA (μg L -1 day -1 ) DHA (μg L -1 day -1 )
  (μmol m -2s -1) LT HT LT HT
Chaetoceros brevis 10 125 ± 14 138 ± 31 3 ± 0 3 ± 0
  25 193 ± 68 160 ± 84 4 ± 1 3 ± 2
  75 174 ± 14 176 ± 0.7 3 ± 0 4 ± 0
  150 175 ± 14 223 ± 20 4 ± 1 4 ± 1
Thalassiosira weissflogii 10 76 ± 17 60 ± 6 12 ± 3 10 ± 1
  75 119 ± 36 nd 22 ± 7 nd
  150 110 ± 27 nd 21 ± 7 nd
Pyramimonas sp. 75 0 nd 5 ± 1 nd
Emiliania huxleyi 75 5 ± 1 nd 164 ± 41 nd
Fibrocapsa japonica 75 150 ± 30 nd 0 nd
  1. Standard culture conditions are indicated in bold. LT: culture temperature 3°C (polar species: C. brevis, Pyramimonas sp.) or 16°C (temperate species: T. weissflogii, E. hux and F. japonica). HT: culture temperature 7°C (polar species) or 20°C (temperate species). Cell densities at harvest: C. brevis: 9.9 × 105 cells mL-1, T. weissflogii: 5.2 × 104 cells mL-1, Pyramimonas sp.: 4.5 × 104 cells mL-1, E. hux 5.0 × 105 cells mL-1, and F. japonica: 2.6 × 104 cells mL-1. Values represent averages ± standard deviation of two replicate cultures. nd = no data available.