Table 4 Effects of urea on growth and TAG content of C. gracilis
From: Advantageous characteristics of the diatom Chaetoceros gracilis as a sustainable biofuel producer
Seawater | Marine Art | 1% NaCl-based media | ||||||
|---|---|---|---|---|---|---|---|---|
F/2 | Urea-F/2 | F/2 + 70 ppm urea | IMK | IMK + 70 ppm urea | F/2 | Urea-F/2 | F/2 + 70 ppm urea | |
Doubling time (h) | 10.3 ± 0.1 | 8.93 ± 0.10 | 10.5 ± 0.1 | 10.2 ± 0.4 | 8.61 ± 0.25 | 9.16 ± 0.17 | 9.28 ± 0.16 | 9.63 ± 0.40 |
Cell density on 4th day (106 cells/mL) | 4.72 ± 0.05 | 6.01 ± 0.16 | 6.36 ± 0.06 | 5.22 ± 0.22 | 5.67 ± 0.02 | 5.37 ± 0.37 | 5.36 ± 0.13 | 5.52 ± 0.10 |
Cell density on 10th day (106 cells/mL) | 6.64 ± 0.01 | 7.04 ± 0.02 | 8.31 ± 0.18 | 6.73 ± 0.14 | 6.19 ± 0.05 | 6.59 ± 0.34 | 5.51 ± 0.22 | 7.08 ± 0.13 |
Volume-specific TAG on 10th day (mg/L) | 163 ± 3 | 179 ± 9 | 150 ± 6 | 87.6 ± 5.3 | 76.6 ± 5.0 | 272 ± 4 | 260 ± 6 | 159 ± 15 |
Cell-specific TAG on 10th day (pg/cell) | 24.1 ± 0.8 | 26.7 ± 2.6 | 18.0 ± 0.5 | 13.8 ± 1.1 | 11.9 ± 0.9 | 25.7 ± 1.9 | 47.4 ± 2.4 | 21.1 ± 2.1 |