Cordia sebestena leaf extract mediated biosynthesis of silver nanoparticles, characterization, and screening of its antimicrobial activities

Abstract

Biosynthesized Silver nanoparticles (AgNPs) are attracting interest due to their special biological applications as well as biologically active secondary metabolites from plants that aid in green synthesis. This study describes the easy, environmentally friendly, cost-effective, and reliable production of AgNPs utilizing the aqueous leaf extract of Cordia sebestena (C. sebestena), as well as the antibacterial and fungal activities. The aqueous leaf extract of C. sebestena was used to biosynthesize AgNPs and served as a reducing and capping agent. The leaf extract reduces the silver cation after maintaining the pH of the solution at 10, and the extract's color changes noticeably. The reduction and formation of AgNPs have been investigated using a variety of techniques, including ultraviolet spectroscopy (UV–vis), X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and fourier transmission infrared spectroscopy (FTIR). The UV-visible absorption spectra of these biosynthesized AgNPs reveals a sizable absorption peak at about 495 nm. SEM and TEM images show that bio-synthesised AgNPs come in a variety of shapes and sizes (AgNPs). The antimicrobial effects of synthesized nanomaterials were tested against bacterial and fungal species versus conventional medicines. The synthesized nanomaterials showed moderate inhibitions against bacterial and fungal pathogens.

Keywords

• Cordia sebestena
• Silver nanoparticles
• Ultra-visible spectroscopy (Uv–vis)
• Transmission electron microscopy (TEM)
• antimicrobial studies