Fig. 1

Susceptibility patterns of S. epidermidis biofilm and planktonic cells to physico-chemical stress exposure. The log reduction of CFU/mL of pairs of S. epidermidis biofilm and planktonic cultures challenged with 60 °C (a), 1.72 M NaCl (b), a solution containing 150 μL of waterguard in 1 L of water (c) and 1.77 M H₂O₂ (d) for 30 and 60 min. Value for ATCC 29213 represents the mean for three independent experiments. Error bars depict SEM. Statistical significance between S. epidermidis biofilm and planktonic cultures were determined using paired t-test (***, p < 0.0001)