Table 7.
Biofilm-forming potential of E. faecium strains.
| E. faecium strain | OD540 nm |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| pH 4 |
pH 5 |
pH 6 |
|||||||
| 24 h | 48 h | 72 h | 24 h | 48 h | 72 h | 24 h | 48 h | 72 h | |
| LR2 | 0.20 ± 0.00 (M) | 0.25 ± 0.01 (M) | 0.26 ± 0.01 (M) | 0.24 ± 0.01 (M) | 0.25 ± 0.01 (M) | 0.26 ± 0.01 (M) | 0.24 ± 0.00 (M) | 0.23 ± 0.01 (M) | 0.25 ± 0.02 (M) |
| LR3 | 0.23 ± 0.01 (M) | 0.27 ± 0.02 (M) | 0.27 ± 0.01 (M) | 0.25 ± 0.01 (M) | 0.25 ± 0.01 (M) | 0.25 ± 0.02 (M) | 0.22 ± 0.02 (M) | 0.23 ± 0.01 (M) | 0.26 ± 0.03 (M) |
| ER5 | 0.23 ± 0.01 (M) | 0.27 ± 0.01 (M) | 0.27 ± 0.01 (M) | 0.25 ± 0.01 (M) | 0.25 ± 0.00 (M) | 0.26 ± 0.01 (M) | 0.25 ± 0.02 (M) | 0.24 ± 0.04 (M) | 0.25 ± 0.02 (M) |
| LR13 | 0.21 ± 0.02 (M) | 0.26 ± 0.0 (M) | 0.28 ± 0.0 (M) | 0.25 ± 0.0 (M) | 0.25 ± 0.03 (M) | 0.25 ± 0.01 (M) | 0.23 ± 0.01 (M) | 0.22 ± 0.03 (M) | 0.25 ± 0.01 (M) |
| VB1 | 0.24 ± 0.02 (M) | 0.28 ± 0.0 (M) | 0.29 ± 0.02 (M) | 0.25 ± 0.01 (M) | 0.26 ± 0.01 (M) | 0.26 ± 0.01 (M) | 0.25 ± 0.03 (M) | 0.24 ± 0.03 (M) | 0.29 ± 0.03 (M) |
| Control (medium alone) | 0.10 ± 0.03 | 0.11 ± 0.01 | 0.13 ± 0.01 | 0.12 ± 0.01 | 0.12 ± 0.01 | 0.12 ± 0.01 | 0.10 ± 0.01 | 0.11 ± 0.00 | 0.12 ± 0.01 |
For each sample, the mean of three values are presented ± SD. The letter inside the parentheses indicates moderate (M) biofilm producer.