Fig. 5

Effect of AgNPs on biofilms. a Effect of AgNPs on biofilms generated by Gram positive bacteria: 1, S.aureus; 2, S. epidermidis; 3, B. globisporus; 4, S. pneumoniae; 5, E. faecalis; 6, S. pyogenes. b Effect of AgNPs on biofilms generated by Gram negative bacteria: 1, E. coli;2, H. influenzae; 3, K. pneumoniae; 4, S. typhimurium; 5, S. marcescens; 6, P. aeruginosa; 7, N. gonhorreae. (●) AgNSs, (□) AgNWs, (♦) AgNRs. c Comparison of the effect produced by each specific type of nanostructure on the set of bacteria analyzed using different bacteria:AgNP ratios. Statistically significant differences are denoted by ***, **, and *, which indicate p < 0.001, p < 0.01, and p < 0.05 respectively