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Table 1. Kineticparameters
obtained from batch fermentation with pH control and without pH control at different
glucose concentrations. |
|
Kinetic parameters |
20g/l glucose |
60g/l glucose |
110g/l glucose |
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|
+ |
- |
+ |
- |
+ |
- |
|
|
Fermentation time to achieve Pmax (h) |
10 |
48 |
48 |
48 |
48 |
24 |
|
Glucose conversion, 100*(So-S)/So (%) |
92.49 |
73.03 |
90.26 |
23.2 |
57.08 |
16.23 |
|
Max. cellular concentration, Xmax (g/l) |
2.2 |
1 |
2.57 |
1.33 |
2.7 |
1.13 |
|
Max. lactic acid concentration, Pmax (g/l) |
10.2 |
13.7 |
32.3 |
10.09 |
30.04 |
6.26 |
|
Product yield, Yp/s (g/g) |
0.54 |
0.8 |
0.63 |
0.78 |
0.45 |
0.27 |
|
Lactic acid productivity (g/lh) |
1.0 |
0.29 |
0.67 |
0.21 |
0.63 |
0.26 |
+:with pH control. |
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