Figure 3.

Dose-dependent effects of organic acids, H₂O₂, and bacteriocin-like compounds (BLCs) in cell-free supernatants (CFSs) of Weissella cibaria strains against (a) Streptococcus pyogenes, (b) Staphylococcus aureus, (c) S. pneumoniae, and (d) Moraxella catarrhalis. ●, CFS; ▲, organic acids; ■, H₂O₂; X, BLCs. Solid line, W. cibaria CMU (oraCMU); broken line, W. cibaria CMS1 (oraCMS1). Different letters (A–C) indicate significant differences among oraCMU treatment groups (p < 0.05). Different letters (a–c) indicate significant differences among oraCMS1 treatment groups (p < 0.05). OD₆₀₀, absorbance at 600 nm.