TABLE 3.
Cell counts of S. aureus CIM433, CIM433/pIF1, CIM433/pCM11, and CIM433/pIF2 in cheese for 15 daysa
| Stage and location | Cell count (CFU/g of cheese) on BHI |
|||
|---|---|---|---|---|
| CIM 433 | CIM433/pIF1 | CIM433/pCM11 | CIM433/pIF2 | |
| Molding for 4 h | 3.0 × 107 | 2.3 × 107 | 1.9 × 107 | 2.4 × 107 |
| Day 1 | 1.1 × 108 | 4.5 × 107 | 4.3 × 107 | 5.2 × 107 |
| Day 15 | ||||
| Core | 2.8 × 107 | 2.5 × 107 | 1.9 × 107 | 8.3 × 106 |
| Surface | 5.9 × 108 | 1.1 × 108 | 1.2 × 108 | 1.6 × 108 |
a
After 15 days of ripening, the core had separated from the surface. Bacterial cultures were plated on BHI solid medium. Data are expressed as the means of two biological replicates.