TABLE 2.
Changes in level of aspartic acid during growth of S. thermophilus wild type and mutant A18(Δppc) in association with Lactobacillus delbrueckii subsp. bulgaricus strains
| Mixed culture |
l-Asp concn (μM)a
|
||
|---|---|---|---|
| 3 h | 5 h | 8 h | |
| DSM 20617/ATCC 11842 | 12.3 ± 0.6 | 12.8 ± 0.7 | 20.7 ± 1.0 |
| DSM 20617/CNRZ 397 | 16.0 ± 0.9 | 24.5 ± 1.4 | 67.1 ± 3.4 |
| DSM 20617/CNRZ 1159 | 20.5 ± 1.4 | 24.4 ± 1.0 | 17.7 ± 1.1 |
| A18(Δppc)/ATCC 11842 | 14.6 ± 0.8 | 10.6 ± 0.6 | 11.2 ± 0.5 |
| A18(Δppc)/CNRZ 397 | 17.0 ± 0.9 | 16.8 ± 0.9 | 37.9 ± 2.2 |
| A18(Δppc)/CNRZ 1159 | 27.6 ± 1.4 | 21.2 ± 1.2 | 18.0 ± 0.8 |
| DSM 20617 | 15.0 ± 1.2 | 14.3 ± 1.0 | 12.2 ± 0.8 |
| A18(Δppc) | 14.1 ± 1.1 | 11.5 ± 0.7 | 9.0 ± 0.5 |
| ATCC 11842 | 25.0 ± 1.4 | 17.9 ± 1.0 | 24.4 ± 1.3 |
| CNRZ 397 | 21.7 ± 1.2 | 31.5 ± 1.8 | 103.1 ± 5.0 |
| CNRZ 1159 | 23.6 ± 1.3 | 25.4 ± 1.2 | 31.4 ± 1.6 |
a
The l-Asp concentration in uncultured SM is 28.2 ± 1.5 μM.