TABLE 2.
Effects of additions to medium SD1 on the growth rate during the main exponential growth phase and biomass yield in pH-controlled batch cultures of L. lactis ATCC 19435a
| Medium | Condition | Growth rate (h−1) | DW (g/liter) | Pyruvate concn (mM) |
|---|---|---|---|---|
| SD1 | Aerobic | 0.015 | 0.09 | 0.0 |
| SD1 + catalase | Aerobic | 0.31 | 0.29 | 3.3 |
| SD1 + 5 mM pyruvate | Aerobic | 0.62 | 0.92 | 4.9 |
| SD1 | Anaerobic | 0.66 | 1.02 | 0.0 |
| SD3 | Aerobic | 0.58 | 0.89 | 8.6 |
| SD3 | O2 limitation | 0.75 | 1.02 | 0.0 |
| SD3 | Anaerobic | 0.86 | 1.21 | 0.0 |
a
For comparison, the results of growth on SD3 are included. The pyruvate concentration in the culture fluid was measured at the end of the exponential growth phase.