Biosynthesis and antibacterial activity of Passiflora incarnata mediated copper oxide nanoparticles

Plant mediated nanoparticle synthesis is a rapidly growing field of study around the world. Plant biomolecules make non-toxic, stable, and cost-effective copper oxide nanoparticles In this study, eco-friendly CuONPs were prepared through a biosynthetic approach using Passiflora incarnata L. leaf extract. The synthesized CuONPs were characterized using UV-Visible spectroscopy (UV-Vis), scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and Dynamic light scattering (DLS). Furthermore, the antibacterial activity was evaluated against Listeria monocytogenes. The SEM results indicated that rod-shaped CuONPs with an average particle size of 49.8 nm (size range of 39-63 nm) were synthesized and shown good antibacterial activity against Listeria monocytogenes. CuONPs produced from Passiflora incarnata leaf extract could be a potential antibacterial agent for treating foodborne infections caused by Listeria monocytogenes. However, more research is needed to determine how it works on the target microorganism.