Abstract

GREEN SYNTHESIS, CHARACTERIZATION AND APPLICATIONS OF SILVER NANOPARTICLES FROM XANTHIUM STRUMARIUM LINN

Sharmila. S and Dr. S. Yamini Sudha Lakshmi*

Abstract

To develop a novel approach for the green synthesis of silver nanoparticles using aqueous leaves extracts of Xanthium strumarium Linn. which has been proven active against MCF-7cell line.In this study, the silver nanoparticles were synthesized biologically using Xanthium strumarium Linn. leaf extract as reducing agent. The extract was used for the study of characterization, antibacterial and free radical activities. The antibacterial study was made against Protease vulgaris, Enterococcus faecalis, Klebseilla pneumonia, Pseudomonas aueruginiosa. The formation of silver nanoparticles was indicated by the colour change from colourless to reddish brown and the particles were characterized by UV-vis, FTIR, ERD, SEM, and TEM analysis. These nanoparticles were found to have significant antimicrobial activity against Pseudomonas aeuruginosa. The nanoparticles also showed a potent cytotoxic activity against MCF7 cell line invitro.

Keywords: UV-vis, FTIR, ERD, SEM, TEM analysis, Xanthium strumarium.