Table 5.
Fermentation kinetic parameters of Pf-EMP and Pf-PAM during transition phase.
|
Transition phase |
|||
|---|---|---|---|
| Strain | Pf-EMP | Pf- PAM | |
| Growth rate (h−1) | µ | 0.017 ± 0.001 | 0.033 ± 0.003 |
| Rates (g/gDW h) | Glucose consumption | 0.071 ± 0.022 | 0.089 ± 0.008 |
| Propionate | 0.042 ± 0.005 | 0.044 ± 0.004 | |
| Acetate | 0.005 ± 0.001 | 0.008 ± 0.001 | |
| Succinate | 0.004 ± 0.001 | 0.004 ± 0.000 | |
| Ratios (g/g) | PA/AA | 1.019 ± 3.608 | 2.666 ± 3.229 |
| PA/Glc | 0.554 ± 0.108 | 0.498 ± 0.019 | |
| Productivity (g/L h) | Glucose consumption | 0.522 ± 0.154 | 0.699 ± 0.039 |
| Propionate | 0.306 ± 0.028 | 0.349 ± 0.006 | |
| Acetate | 0.040 ± 0.003 | 0.063 ± 0.004 | |
| Succinate | 0.030 ± 0.004 | 0.028 ± 0.000 | |
*Values corresponding to transitional growth phase (50–64 h), carbon balance 113% Pf-EMP, 119% Pf-PAM.