Green synthesis, characterization and antimicrobial activities of silver nanoparticles using Cissus quadarangularis leaf extract

In the present work biogenic synthesis of silver nanoparticles using Cissus quadarangularis aqueous leaf extract and their evaluation of antimicrobial activities. The synthesized nanoparticles were confirmed by, X-ray diffraction (XRD), UV–visible absorption (UV–Vis), Scanning electron microscopy (SEM) and Fourier transform infra-red (FT-IR) spectroscopy. The surface plasmon resonance resulted in significant absorption at 450 nm. The XRD analysis confirmed the crystalline nature of the particles and average crystallite size was found to be 35 nm. Furthermore, FT-IR study was used to identify potential biomolecules involved in the bio reduction of silver ions. Bactericidal efficacy of synthesized nanoparticles against Gram-positive and Gram-negative bacteria was confirmed using an antimicrobial activity.