Table 1 Characteristics and activity of CFS against Listeria monocytogenes EGDe
Number of consortium | Variety of cheese | Cell-free supernatant (CFS) | Number of viable Listeria after 24 h in CFS (CFU/ml) | |||
|---|---|---|---|---|---|---|
pH | Lactic acid (mM) | Untreateda | 5 min 100°Cb | Proteinase Kc | ||
5a | Maroilles | 6.0 | 5.5 | 0 | 0 | 0 |
6 | Munster | 6.0 | 4.6 | 4.2E + 03 | 0 | 0 |
7 | Munster | 5.5 | 6.1 | 2.5E + 03 | 3.3E + 06 | 1.5E + 07 |
9 | Maroilles | 6.0 | 3.4 | 1.9E + 02 | 3.5E + 06 | 8.7E + 06 |
11a | Munster | 5.5 | 8.4 | 0 | 0 | 0 |
15a | Maroilles | 6.0 | 5.4 | 0 | 1.6E + 07 | 0 |
20 | Maroilles | 6.0 | 3.9 | 0 | 9.6E + 05 | 4.4E + 06 |
21 | Epoisses | 5.5 | 3.2 | 3.0E + 07 | 5.1E + 07 | 3.0E + 07 |
22 | Munster | 6.0 | 2.7 | 6.8E + 06 | 5.1E + 07 | 6.5E + 06 |
23 | Livarot | 6.0 | 3.5 | 3.3E + 06 | 2.5E + 07 | 1.4E + 07 |
24 | Munster | 6.0 | 4.4 | 0 | 9.8E + 06 | 2.0E + 06 |
11b | Munster | 5.7 | n.d. | 2.3E + 08 | n.d. | n.d. |
39b | St. Nectaire | 6.0 | n.d. | 2.5E + 09 | n.d. | n.d. |