Table 6 Effects of pH on d-lactate production and growth of the engineered strain in batch fermentation
pH | Glucose consume (g/l) | d-lactate (g/l) | Yield (%) | Productivity (g/l/h) | Maximum OD600 |
|---|---|---|---|---|---|
8.5 | 74.44 ± 0.29 | 52.28 ± 1.10 | 73.68 ± 0.01 | 2.49 ± 0.02 | 4.15 ± 0.11 |
9.0 | 73.31 ± 0.07 | 55.24 ± 1.06 | 79.30 ± 0.01 | 2.91 ± 0.06 | 4.96 ± 0.25 |
9.5 | 72.84 ± 0.14 | 54.73 ± 1.17 | 79.02 ± 0.02 | 2.43 ± 0.05 | 4.13 ± 0.06 |
10.0 | 72.35 ± 0.16 | 43.33 ± 1.34 | 62.31 ± 0.02 | 1.52 ± 0.05 | 3.94 ± 0.17 |