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Table 2 Chlorophyll a per cell, specific growth rate (μ), EPA and DHA content (normalized to biovolume) of two polar ( C. brevis , Pyramimonas sp.) and three temperate ( T. weissflogii , E. huxleyi and F. japonica ) microalgal species (mean value (± SD) of two replicate cultures)

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

  Temperature (°C) Irradiance (μmol m -2s -1) μ (day -1) Chloroph. a(pg cell -1) EPA content (fg μm -3) DHA content (fg μm -3)
Chaetoceros brevis 3 10 0.22 ± 0.02 0.50 ± 0.03 1.62 ± 0.03 0.04 ± 0.00
  3 25 0.35 ± 0.02 0.39 ± 0.02 1.56 ± 0.45 0.03 ± 0.01
  3 75 0.47 ± 0.01 0.15 ± 0.01 1.06 ± 0.06 0.02 ± 0.00
  3 150 0.43 ± 0.02 0.15 ± 0.00 1.18 ± 0.05 0.03 ± 0.00
  7 10 0.24 ± 0.03 0.52 ± 0.06 1.61 ± 0.14 0.03 ± 0.00
  7 25 0.36 ± 0.06 0.44 ± 0.11 1.19 ± 0.48 0.02 ± 0.02
  7 75 0.41 ± 0.00 0.13 ± 0.01 1.23* 0.03*
  7 150 0.42 ± 0.02 0.13 ± 0.00 1.52 ± 0.07 0.03 ± 0.01
Thalassiosira weissflogii 16 10 0.29 ± 0.06 9.77 ± 0.03 2.23* 0.34*
  16 25 0.36 ± 0.01 9.84 ± 0.70 nd nd
  16 75 0.42 ± 0.08 4.50 ± 1.14 2.31 ± 0.26 0.43 ± 0.05
  16 150 0.49 ± 0.09 3.05 ± 0.00 1.85 ± 0.13 0.35 ± 0.07
  20 10 0.31 ± 0.01 9.53 ± 0.06 1.61 ± 0.08 0.27 ± 0.01
  20 25 nd 8.40 ± 0.33 1.83 ± 0.01 0.34 ± 0.00
  20 75 nd 3.67 ± 0.38 nd nd
  20 150 nd 2.93 ± 0.09 1.99* 0.40*
Pyramimonas sp. 3 75 0.14 ± 0.03 1.54 ± 0.16 0 8.75 ± 0.28
Emiliania huxleyi 16 75 0.34 ± 0.08 0.18 ± 0.00 0.89* 27.7*
Fibrocapsa japonica 16 75 0.44 ± 0.04 15.99 ± 0.71 2.93 ± 0.30 0
  1. Standard culture conditions are indicated in bold. nd = no data available. * no replicate.