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Table 4 Biomass concentration, lipid accumulation, and CO 2 fixation of Chlamydomonas sp. JSC4 after transfer to high salinity conditions of 3, 5, and 7% sea salt for three to seven days

From: Optimizing biodiesel production in marine Chlamydomonassp. JSC4 through metabolic profiling and an innovative salinity-gradient strategy

Final sea salt concentration (%)

Cultivation time under nitrogen depletion (days)

Biomass concentration (g L-1)

Lipid content (%)

Lipid productivity (mg L-1d-1)

CO2fixation rate (mg L-1d-1)

2.0 (batch)

3

2.232 ± 0.007

41.9 ± 1.8

159 ± 8

731 ± 3

5

2.467 ± 0.064

49.8 ± 2.3

152 ± 11

561 ± 16

7

2.488 ± 0.044

53.5 ± 0.8

130 ± 4

466 ± 9

3.0

3

2.141 ± 0.007

46.1 ± 1.3

184 ± 5

750 ± 3

5

2.337 ± 0.009

53.8 ± 1.5

159 ± 5

556 ± 2

7

2.431 ± 0.042

56.0 ± 1.0

136 ± 0

456 ± 8

5.0

3

1.796 ± 0.026

51.2 ± 1.1

170 ± 1

623 ± 10

5

1.941 ± 0.010

58.2 ± 1.5

142 ± 4

458 ± 2

7

2.022 ± 0.030

61.2 ± 1.8

122 ± 6

376 ± 6

7.0

3

1.593 ± 0.027

47.1 ± 0.6

138 ± 4

549 ± 8

5

1.683 ± 0.013

53.3 ± 2.8

112 ± 7

394 ± 6

 

7

1.735 ± 0.028

57.6 ± 3.0

98 ± 7

320 ± 5

  1. Before transfer to high salinity, the cultures were grown with 2% sea salt for around two days. The values are the mean ± standard deviation of three replicated experiments. (Light intensity = 200 μmol m-2 s-1; CO2 aeration = 2.0%; CO2 flow rate = 0.05 vvm).