Direct Electrical Current Reduces Bacterial and Yeast Biofilm Formation

Figure 4

Results of quantitative cultures of Staphylococcus epidermidis and Propionibacterium acnes biofilms on Teflon discs and associated planktonic cells with 500 µA DC exposure started at the time of bacterial seeding of the discs for experiments performed under anaerobic conditions. The -axis shows hours of DC exposure. The -axis shows results of quantitative cultures in log₁₀/cm² for biofilm and log₁₀/mL for planktonic cultures. For P. acnes, the 0 µA controls that were tested at each time point were combined for graphical purposes. Statistical significance compared to exposure to no current ().