Green synthesis of silver nanoparticles using root extracts of Cassia toral L. and its antimicrobial activities

Abstract

Use of environmentally benign materials such as plant extract used to synthesize silver nanoparticles (Ag-NPs) offers numerous benefits such as being eco-friendly and compatibility for pharmaceutical and other biomedical applications. Metallic nanoparticles are used in different applications including, electronics, catalyst, and photonic. Silver metal has a great toxicity against a wide range of microorganisms, particularly silver nanoparticle which has promising antimicrobial properties. Silver nanoparticles are found to be effective as anti-inflammatory, anti-angiogenesis, antiviral, anti-platelet activity against cancer cells. The synthesized Ag-NPs of <em>Cassia tora L.</em> roots were characterized using UV-vis spectra, FT-IR, TEM, and XRD analysis. The antimicrobial activities were assessed by disc diffusion method. The Ag-NPs were also examined against the fresh cultures of one Gram-positive and three Gram-negative bacteria.