TABLE 2.
Calculated pHi values for pH-equilibrated cells as determined by the equation derived from L. delbrueckii subsp. bulgaricus NCFB 2772 data
| Strain | pHi at:
|
|
|---|---|---|
| pHex 6.0 | pHex 7.0 | |
| S. thermophilus 50 | 6.1 ± 0.1a | 7.0 ± 0.1 |
| S. thermophilus 61 | 6.1 ± 0.1 | 7.0 ± 0.1 |
| S. thermophilus 63 | 6.2 ± 0.1 | 7.1 ± 0.1 |
| S. thermophilus 68 | 6.2 ± 0.1 | 7.1 ± 0.1 |
| L. delbrueckii subsp. bulgaricus NCFB 2772 | 6.0 ± 0.2 | 7.0 ± 0.0 |
| L. delbrueckii subsp. bulgaricus 01 | 6.1 ± 0.3 | 7.2 ± 0.1 |
| L. delbrueckii subsp. bulgaricus 08 | 5.8 ± 0.2 | 7.1 ± 0.1 |
| L. lactis subsp. lactis 02 | 6.2 ± 0.1 | 7.1 ± 0.1 |
| L. innocua | 6.2 ± 0.1 | 7.2 ± 0.1 |
a
Values are means ± standard deviations based on the data obtained for at least 20 cells.