Biological Synthesis of Silver Nanoparticles Using Raphanus sativus Var. longipinnatus Leaf Extract and Evaluation of their Antioxidant and Antibacterial Activity

Nanocrystalline silver particles have found tremendous applications in the field of diagnostics and therapeutics. In recent years, plant mediated biological synthesis of nanoparticles is gaining importance due to its eco-friendliness. In this study, the synthesis and characterization of silver nanoparticles was carried out by using Raphanus sativus var. longipinnatus leaf extract as reducing agent and evaluation of antibacterial and antioxidant activity. The synthesized silver nanoparticles were characterized with UV?Vis spectrophotometry (UV-Vis), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy-Energy dispersive spectroscopy (SEM- EDX), Transmission electron microscopy (TEM) and X-Ray diffraction spectroscopy (XRD). The antibacterial activity of silver nanoparticles and in-vitro antioxidant activity have been evaluated. These synthesized silver nanoparticles were found to have significant antibacterial activity and antioxidant capacity, thus can be used as potential radical scavenger against deleterious damages caused by the free radicals.