Fig. 5
Anti-biofilm activity of RPS-AgNPs nanocomposites. a Left-side set of photographs shows nanocomposites inhibition of biofilm formation against Staphylococus aureus (INR-16-1700), while; right-side set of photographs shows the inhibition effect of nanocomposites against Stenotrophomona maltophila (HCR-392861). Numbers on each photograph represent inoculum (biofilm disaggregation from nanocomposites) serial dilutions in saline solution, from 3 representing 1 × 10−3 v/v dilution to 10 representing 1 × 10−10 v/v dilution. b Graph shows quantitative analysis of biofilm inhibition against S. aureus (INR-16-1700) and S. maltophilia (INR-16-1700), presenting the Log 10 of the number of colony forming units (CFU) counted from dilution 8 vs nanocomposite from where biofilm was disaggregated); *p < 0.05 ANOVA, Tukey pos hoc test