Ultrasound Assisted-phytofabricated FeO NPs with Antioxidant Properties and Antibacterial Effects on Growth, Biofilm Formation, and Spreading Ability of Multidrug Resistant Bacteria

Complicated issue in infectious illnesses therapy is increasing of multidrug resistant (MDR) bacteria and biofilms in bacterial infections. In this way, emerging of nanotechnology as a new weapon specifically in the cases of metal nanoparticle (MNPs) synthesis and MNPs surface modification has obtained more attention. In this study, ultrasound-assisted green synthesis method was utilized for the preparation of FeO NPs with novel shape (dendrimer) through leaf aqueous extract of Boiss. Ultraviolet-visible spectroscopy, energy dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), atomic force microscopic (AFM), X-ray diffraction (XRD) techniques were applied for MNPs physicochemical characterization. Also, disc diffusion assay, minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC), planktonic and biofilm morphology of three pathogenic bacteria involving ATCC 13880, ATCC 25922, and methicillin-resistant (MRSA) were evaluated upon treatment of FeO NPs as antiplanktonic and antibiofilm analysis. Results showed efficient antiplanktonic and antibiofilm activities of biosynthesized FeO NPs with average diameter size of 83.4 nm. Reduction in biofilm formation of ATCC under FeO NPs stress was significant (66%) in higher MNPs concentration (100 μg/mL). In addition, as first report, spreading ability of as important factor in colony expansion on culture medium was reduced by increasing of FeO NPs. Present study demonstrates striking antiplanktonic, antibiofilm, antispreading mobility and antioxidant aspects of one-pot biosynthesized FeO NPs with novel shape.