Fig. 3

Nanoplatforms coated with silver nanoparticles and graphene oxide decreased the viability of S. enteritidis. Scanning electron microscope images of a control S. enteritidis bacteria and b S. enteritidis incubated on a silver nanoparticle- and graphene oxide-coated nanoplatform, after incubation at 37 °C for 24 h. c Viability of S. enteritidis after incubation on the nanoplatform for 24 h was assessed with a PrestoBlue assay. Values are expressed as mean ± standard deviation (n = 3, each experiment in triplicate). Statistical significance is indicated by different superscripts (one-way ANOVA; P < 0.05). Abbreviations: C, control group (foil without nanoparticles); AgNPs, nanoplatform coated with silver nanoparticles; GO, nanoplatform coated with graphene oxide; Ag-GO, nanoplatform coated with composite of graphene oxide and silver nanoparticles; RU, relative units