SYNTHESIS OF ENVIRONMENTAL STABLE SILVER NANO PARTICLES FROM THE LEAF EXTRACT OF POLYALTHIA LONGIFOLIA AND TO STUDY ITS ANTIBACTERIAL ACTIVITY

Abstract

The synthesis of stable nanoparticles from biological sources is evolving a new era of resear ch interests in nanotechnology. To develop a novel approach for the improve ment of aquaculture by introducing the green synthesis of silver nanoparticle and this can be achieved by inhibiting the pathogenic microorganisms which are harmful to the aquaculture environment. The present work leads to the synthesis of nanoparticles fr om the aqueous leaf extract of Polyalthia longifolia using 1 mM Silver nitrate. The synthesis and characterization of silver nanoparticles were confirmed by UV - vis spectroscopy , FTIR, TEM, XRD and XPS. The antibacterial activities were carried out against fish infecting organisms such as Aeromonas hydrophila , Pseudomonas aeruginosa , Edwardsiella tarda and Vibrio cholerae by using Agar well - Diffusion method.