GREEN SYNTHESIS OF SILVER NANOPARTICLES USING MARINE BROWN ALGAE TURBINARIA CONOIDES AND ITS ANTIBACTERIAL ACTIVITY

Abstract

Improvement of ecofriendly procedures for the nano particles synthesis is the growing in to the field of nanotechnology. In this report we used the extract of marine brown seaweed Turbinaria conoides for the silver nanoparticles synthesis is the new one, cost effective and environmentally favorable. The surface plasmon resonance band positioned at 420 nm for silver nanoparticles was characterized by UVVisible Spectrophotometer. XRay diffraction (XR D) data illustrated the crystalline nature of silver nanoparticles. Scanning electron microscope (SEM) shows the spherical shaped with the average size of 96 nm. The possible biomolecules are amines and poly phenols may responsible for reduction of silver ions was identified through Fourier transmittance infrared spectroscopy (FTIR). Further these biosynthesized silver nanoparticles were found to be highly toxic against gram positive bacteria Bacillus subtilis (MTCC3053) and gram negative bacteria Klebsiella planticola (MTCC2277) was analyzed by zone of inhibition.