Table 3 Effects of salinity on growth and TAG content of two diatoms, C. gracilis and P. tricornutum
From: Advantageous characteristics of the diatom Chaetoceros gracilis as a sustainable biofuel producer
Concentration of NaCl (%) | ||||||
|---|---|---|---|---|---|---|
0 | 0.5 | 1 | 2 | 3 | 4 | |
C. gracilis | ||||||
Doubling time (h) | 11.1 ± 0.5 | 9.52 ± 0.48 | 9.16 ± 0.17 | 9.75 ± 0.20 | 11.3 ± 1.5 | 15.7 ± 0.4 |
Cell density on 4th day (106 cells/mL) | 2.41 ± 0.19 | 4.41 ± 0.67 | 5.32 ± 0.14 | 5.24 ± 0.26 | 3.64 ± 0.80 | 2.24 ± 0.81 |
Cell density on 10th day (106 cells/mL)a | 3.89 ± 0.45 | 5.30 ± 0.15 | 6.29 ± 0.31 | 6.47 ± 0.43 | 3.63 ± 0.32 | 2.71 ± 0.23 |
Volume-specific TAG on 10th day (mg/L) | 223 ± 18 | 234 ± 43 | 272 ± 4 | 223 ± 6 | 172 ± 3 | 69.3 ± 28.6 |
Cell-specific TAG on 10th day (pg/cell)a | 73.1 ± 7.3 | 46.2 ± 4.9 | 47.0 ± 2.5 | 35.5 ± 3.9 | 25.5 ± 0.6 | 19.3 ± 5.0 |
P. tricornutum | ||||||
Doubling time (h) | n.d. | n.d. | 14.6 ± 0.2 | 15.8 ± 0.4 | 15.4 ± 0.7 | 19.0 ± 0.9 |
Cell density on 4th day (106 cells/mL) | n.d. | n.d. | 14.9 ± 0.4 | 15.4 ± 0.2 | 13.2 ± 0.6 | 11.6 ± 0.3 |
Cell density on 10th day (106 cells/mL) | n.d. | n.d. | 16.4 ± 1.0 | 16.6 ± 9.2 | 14.9 ± 0.1 | 13.8 ± 0.6 |
Volume-specific TAG on 10th day (mg/L) | n.d. | n.d. | 183 ± 11 | 180 ± 9 | 158 ± 14 | 161 ± 15 |
Cell-specific TAG on 10th day (pg/cell) | n.d. | n.d. | 11.2 ± 0.4 | 10.9 ± 1.1 | 10.6 ± 0.8 | 11.7 ± 0.6 |