Figure 3.
Effect of the combined antimicrobial therapy of silver nanoparticles (AgNPs) and blue light in preventing biofilm formation by Pseudomonas aeruginosa on gelatin-based bioplastic discs.
Notes: AgNP-impregnated gelatin discs with or without combination with the blue light were inoculated with 1×107 CFU/mL of P. aeruginosa. The formed biofilm was then dislodged by sonication and the viable adherent cells were counted. Viable colony count was recorded as the mean of three separate experiments. Note that the combined therapy significantly reduced the number of adherent cells in the biofilm compared to the control and the silver compound or blue light alone. Error bars represent SD.
Abbreviations: CFU, colony forming unit; SD, standard deviation.