TABLE 1.
Fermentation values calculated from pure cultures and mixed culture of both species
| Fermentation parametera | Fermentation value ± SDb
|
||
|---|---|---|---|
| L. lactis IL-1403 pure culture | S. cerevisiae CEN-PK905 pure culture | Mixed culture | |
| μIL-1403 (h−1) | 0.92 ± 0.04 | 1.01 ± 0.08 | |
| μCEN-PK905 (h−1) | 0.45 ± 0.01 | 0.45 ± 0.01 | |
| qglucose (mmol·g−1·h−1) | 25.6 ± 0.9 | 15.8 ± 0.1 | |
| vlactate (mmol·g−1·h−1) | 49.3 ± 1.4 | 42.1 ± 0.2c | |
| vethanol (mmol·g−1·h−1) | 26.6 ± 0.5 | 22.8 ± 1.0d | |
| Yglucose,IL-1403 (g·mmol−1) | 0.03 ± 0.00 | ||
| Yglucose, CEN-PK905 (g·mmol−1) | 0.02 ± 0.00 | ||
| Yglucose, lactate (cmol·cmol−1) | 0.93 ± 0.03 | ||
| Yglucose, ethanol (cmol·cmol−1) | 0.56 ± 0.05 | ||
| Yglucose, glycerol (cmol·cmol−1) | 0.09 ± 0.05 | ||
Abbreviations: μIL-1403, specific growth rate of L. lactis IL-1403; μCEN-PK905, specific growth rate of S. cerevisiae CEN-PK905; qglucose, specific glucose consumption rate; vlactate, specific lactate production rate; vethanol, specific ethanol production rate; Yglucose, IL-1403, biomass yield of L. lactis IL-1403 relative to that of glucose; Yglucose, CEN-PK905, biomass yield of S. cerevisiae CEN-PK905 relative to that of glucose; Yglucose, lactate, lactate yield relative to that of glucose; Yglucose, ethanol, ethanol yield relative to that of glucose; Yglucose, glycerol, glycerol yield relative to that of glucose.
Values ± standard deviations (SD) were derived from cultures performed three times.
Calculated taking into account the L. lactis IL-1403 biomass only.
Calculated taking into account the S. cerevisiae CEN-PK905 biomass only.