Figure 2.

Antibiofilm activity of 1018-K6 on 11 strains of S. enterica from inocula of 10⁸ CFU/mL (A) and 10⁴ CFU/mL (B). Bacterial cells were grown under biofilm conditions in the absence (control) or presence of the peptide at a concentration of ½ and ¼ of the corresponding MIC values for each strain (1018-K6 ½ and 1018-K6 ¼, respectively). Statistical analysis was performed only within each strain, comparing the control with each treated bacterial sample. Average OD₆₃₀ values are shown with error bars representing the standard error of four independent replicates. Different superscript uppercase letters indicate a significant difference within each strain at p < 0.01. Different superscript lowercase letters indicate a significant difference within each strain at p < 0.05.