Table 2.
Productivity (g/L h) of lactic acid and biomass across all fermentation conditions.
| Productivity (g/L h) |
||||||||
|---|---|---|---|---|---|---|---|---|
| 24 h |
48 h |
96 h |
123 h |
|||||
| Lactic acid/biomass | Lactic acid/biomass | Lactic acid/biomass | Lactic acid/biomass | |||||
| Batch | 1.18 | 0.17 | 1.18 | 0.09 | – | – | – | – |
| Pulse fed-batch | 1.90 | 0.17 | 1.17 | 0.08 | 1.03 | 0.04 | – | – |
| Constant feed rate fed-batch | 1.07 | 0.18 | 1.05 | 0.14 | – | – | 0.65 | 0.05 |
| pH stat (whey and 10 N NaOH) | 2.53 | 0.25 | 1.90 | 0.11 | 0.77 | 0.05 | – | – |
| pH stat (whey and 5 N NaOH) | 3.10 | 0.28 | 1.93 | 0.16 | 1.16 | 0.08 | – | – |
| pH stat (only whey) | 2.70 | 0.49 | 2.25 | 0.23 | 1.49 | 0.10 | – | – |