Figure 2.

Biofilm formation (%) on polystyrene microplates by (a) Pseudomonas aeruginosa ATCC 27853 and (b) Staphylococcus aureus ATCC 29213 in the absence (Control) or after the addition of the crude EPS B3-15 (300 µg/mL) at different times (T0, T2, T4, T8), and after 48 h (T48) for P. aeruginosa or 24 h (T24) for S. aureus, when the biofilms were completely established. Significantly different ** p ≤ 0.01 compared with control (black bar). In brackets are data on biofilm reduction as a percentage.