‘Violacein Capped Silver Nanoparticles: Synthesis, Characterization and Antibacterial, Antifungal, Antialgal, Anticancer & Cytotoxic Properties’

Abstract

The strains of violacein producing bacteria were isolated from different environmental source, identified to be J. lividium. The butanolic crude extract of J. lividium strain Isl containing crude violacein was used to cap the silver nanoparticles (AgNPs) by modifying a green method using glucose and starch as reducing and capping agent respectively. UV–Vis spectroscopy, Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM) were used to certify that the smaller sized, well dispersed and good quality of the violacein capped AgNPs was achieved. X-ray Diffraction (XRD) confirmed that starch and violacein capped AgNPs have cubic face centered crystalline nature. The capping of AgNPs with violacein and starch was confirmed through Fourier Transform Infrared (FTIR) Spectroscopy. Stability testing showed that violacein capped AgNPs were stable over a longer period of time and proved as better antibacterial, antifungal and anticancer agents, compared to starch capped nanoparticles and violacein