Table 1 Effects of vitamins 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
| Â | Inoculation at logarithmic phase | Inoculation at stationary phase | ||
|---|---|---|---|---|
+ vitamins | − vitamins | + vitamins | − vitamins | |
C. gracilis | ||||
 Doubling time (h) | 10.7 ± 0.6 | 12.0 ± 0.6 | 12.6 ± 0.6 | 12.5 ± 0.3 |
 Cell density on 4th day (106 cells/mL) | 4.14 ± 0.22 | 3.26 ± 0.07 | 4.08 ± 0.15 | 3.30 ± 0.07 |
 Cell density on 10th day (106 cells/mL) | 6.28 ± 0.25 | 6.68 ± 0.04 | 6.48 ± 0.27 | 6.08 ± 0.19 |
 Volume-specific TAG on 10th day (mg/L) | 232 ± 9 | 190 ± 5 | 216 ± 9 | 209 ± 3 |
 Cell-specific TAG on 10th day (pg/cell) | 38.5 ± 1.1 | 29.0 ± 0.2 | 33.3 ± 0.1 | 34.4 ± 0.8 |
P. tricornutum | ||||
 Doubling time (h) | 14.5 ± 0.1 | 14.4 ± 0.2 | 17.5 ± 0.8 | 20.1 ± 0.9 |
 Cell density on 4th day (106 cells/mL) | 15.3 ± 0.6 | 14.9 ± 0.2 | 14.1 ± 0.2 | 9.68 ± 0.52 |
 Cell density on 10th day (106 cells/mL) | 17.5 ± 0.3 | 18.4 ± 0.3 | 15.8 ± 0.2 | 14.7 ± 0.6 |
 Volume-specific TAG on 10th day (mg/L) | 179 ± 4 | 181 ± 5 | 152 ± 6 | 54.5 ± 5.4 |
 Cell-specific TAG on 10th day (pg/cell) | 10.2 ± 0.3) | 9.84 ± 0.20) | 9.92 ± 0.67 | 3.69 ± 0.20 |