Eco-friendly Synthesis and Characterization of Silver Nanoparticles and Evaluation of Their Antibacterial Activity

Generally, most of the metallic nanoparticles have been synthesized using chemical techniques, where the chemicals used are generally toxic and combustible. Therefore there is a growing need to develop environment friendly synthesis techniques without using toxic chemicals. In this paper we present a simple and green/eco-friendly/chemical free biosynthesis of silver nanoparticles using Elettaria cardamom seed extract as reducing agents. The as synthesized nanoparticles were characterized by UV-vis absorbance spectroscopy, XRD and SEM measurements. The experimental study confirmed the formation of highly crystalline nanoparticles with uniform shape. Further, the antibacterial activity against the Bacillus subtilis was also evaluated for Elettaria cardamom seeds extract assisted silver nanoparticles and the later found to exhibit significant activity.