Table 1.
pH and acid production by 5 type strains of propionibacteria after extraction from overlay assay plates. Data in the table show mean values with one standard deviation (n = 4).
| Bacteria | Glycerol overlay | pH | Glycerol and acid content (mM) | |||
|---|---|---|---|---|---|---|
| Glycerol | Lactic acid | Acetic acid | Propionic acid | |||
| P. acidipropionici | −* | 5.5 ± 0.0 | 0 | 99 ± 6 | 15 ± 1 | 27 ± 2 |
| +† | 5.2 ± 0.0 | 27 ± 2 | 102 ± 8 | <10 | 24 ± 3 | |
| P. freudenreichii | − | 6.0 ± 0.0 | 0 | 45 ± 6 | 28 ± 1 | 54 ± 2 |
| subsp. shermanii | + | 5.3 ± 0.0 | 12 ± 1 | 41 ± 4 | 28 ± 2 | 71 ± 2 |
| P. freudenreichii | − | 5.9 ± 0.0 | 0 | 38 ± 1 | 29 ± 4 | 50 ± 6 |
| subsp. freudenreichii | + | 5.2 ± 0.0 | 12 ± 1 | 36 ± 3 | 28 ± 3 | 61 ± 3 |
| P. thoenii | − | 6.1 ± 0.0 | 0 | 45 ± 2 | 29 ± 3 | 47 ± 3 |
| + | 5.1 ± 0.0 | 12 ± 1 | 62 ± 6‡ | 20 ± 1 | 55 ± 6 | |
| P. jensenii | − | 6.0 ± 0.0 | 0 | 34 ± 2 | 26 ± 3 | 53 ± 2 |
| + | 5.2 ± 0.0 | <10 | 56 ± 15 | 16 ± 3 | 62 ± 7 | |
*The overlay agar contained no glycerol. †The overlay agar contained 100 mM glycerol. ‡Represents only two values.