Abstract

PLANT-MEDIATED BIOSYNTHESIS AND CHARACTERIZATION OF SILVER NANOPARTICLES BY LEAF EXTRACTS OF O. SANCTUM, A. INDICA, M. CHARANTIA AND RHIZOME EXTRACT OF C. LONGA

Fouzia Rafat* and Beauty Kumari

ABSTRACT

Evolution of an ecological and biogenic experimental process for synthesis of nanoparticles is evolving into a significant offshoot of nanotechnology. As an important metal, silver nanoparticles (AgNPs) have a number of applications in medical domain. Since these silver nanoparticles have been used for infection prevention in the medical study, it may be more relevant to reduce their size by using ancient Indian herbal plants. A green rapid biogenic synthesis of silver nanoparticles using O. sanctum, A. indica, M. charantia and C. longa aqueous extracts was demonstrated in this present study. The pathway of nanoparticles formation is by means of reduction of AgNO3 by leaf extracts and rhizome extract, which acts as both reducing and capping agents. The formation of the silver nanoparticles was observed within 15 minutes. The properties of prepared nanoparticles were characterized by visual examination (colour change), UV absorption, Fourier Transform Infrared Spectroscopy (FTIR). An intense surface plasmon resonance band at 475 nm in the UV- visible spectrum clearly reveals the formation of silver nanoparticles. FTIR spectrum confirms the existence of various functional groups of biomolecules capping the nanoparticles.

Keywords: Bioreduction, Silver nanoparticles, Plant extracts, Green synthesis.