Figure 2.

Log reductions (log₁₀ CFU/mL) of planktonic cells for each bacterial species (□ S. aureus; ■ S. epidermidis) following 6 min exposure to each compound (i.e., CAR, THY, EUG, and BAC) applied at four different concentrations (ppm). The bars represent the mean values ± standard deviations. For each separate graph, mean values sharing at least one common letter shown above the bars are not significantly different (p > 0.05). Dotted lines illustrate linear regression correlations between the log reductions achieved (for each species) at each tested compound’s concentration. The mathematical equations of these regression plots, together with their regression coefficients (R²) and Pearson’s correlation coefficients (r_p), are also shown.