Table 1 Kinetic and stoichiometric parameters of aerobic batch cultivations. Specific rates (Q) are presented as [mmoles (g h)−1], ADH activities as [U mg prot−1], and yield values (Y) and NAD(P)(H) ratios are given as molar ratios. Means of three cultivation experiments are presented, with standard deviation values in brackets. Statistical significance of differences between the strains: *P < 0.05; **P < 0.01
From: Ethanologenesis and respiration in a pyruvate decarboxylase-deficient Zymomonas mobilis
Zm6 | pdc | |
|---|---|---|
µ [h–1] | 0.27 (± 0.03) | 0.23 (± 0.01) |
Qgluc | 33.1 (± 5.3) | 28.4 (± 1.7) |
QCO2* | 57.5 (± 6.0) | 45.1 (± 3.5) |
QO2 | 24.2 (± 1.8) | 20.3 (± 1.6) |
Ypyr/gluc* | 0.03 (± 0.02) | 0.15 (± 0.06) |
YEtOH/gluc | 1.29 (± 0.11) | 1.01 (± 0.24) |
Y EtOH/CO2** | 0.72 (± 0.05) | 0.52 (± 0.03) |
Yacetald/gluc* | 0.49 (± 0.21) | 0.92 (± 0.12) |
Yacetald/CO2* | 0.27 (± 0.12) | 0.49 (± 0.08) |
ADH I | 3.17 (± 0.13) | 3.41 (± 0.22) |
ADH II | 1.25 (± 0.23) | 0.82 (± 0.19) |
[NADH/NAD] | 0.168 (± 0.011) | 0.184 (± 0.004) |
[NADH/NADP] | 0.047 (± 0.008) | 0.043 (± 0.009) |