Antibacterial and Antibiofilm Effect of Low Viscosity Chitosan against Staphylococcus epidermidis

Figure 3

Formation of biofilm of S. epidermidis in medium with LVC at concentrations ranging from 0.0005 to 0.02% w/v (). Amount of safranin-stained biomass after 18 hours is expressed as optical density (OD₅₃₀) relative to control (C). Control: medium with pH 5.9 without LVC. : OD₅₃₀ significantly reduced compared to C; ¤: OD₅₃₀ significantly increased compared to C.