Table 3.
Inhibitory activity of the extracts on the mature biofilm (24 h).
| Percentage of Inhibition Compared to the Control | ||||
|---|---|---|---|---|
| CV (24 h) | P. incisa (Ext. H2O) 10 μg/mL | P. incisa (Ext. H2O) 20 μg/mL | P. incisa (Ext. MeOH) 10 μg/mL |
P. incisa (Ext. MeOH) 20 μg/mL |
| A. baumannii | 19.13 **** ± 1.02 | 19.37 **** ± 1.26 | 12.35 *** ± 0.46 | 19.53 **** ± 1.18 |
| E. coli | 4.38 * ± 0.12 | 25.5 **** ± 1.57 | 32.87 **** ± 1.88 | 44.62 **** ± 2.87 |
| L. monocytogenes | 14.93 **** ± 1.02 | 17.21 **** ± 1.16 | 3.32 * ± 0.11 | 18.10 **** ± 1.04 |
| P. aeruginosa | 24.36 **** ± 1.09 | 36.68 **** ± 1.44 | 29.32 **** ± 2.86 | 55.78 **** ± 2.55 |
| S. aureus | 8.26 ** ± 0.11 | 32.54 **** ± 1.43 | 31.31 **** ± 2.97 | 51.27 **** ± 2.07 |
The tests were performed using 10 and 20 μg/mL of extract. All tests were performed in triplicate. Results are expressed as percentages (means ± SD) and were calculated assuming the control (untreated bacteria) = zero. *: p < 0.1; **: p < 0.01; ***: p < 0.001; ****: p < 0.0001, compared with the control (ANOVA followed by Dunnett’s multiple comparisons test).