Table of Contents
ISRN Nanomaterials
Volume 2013, Article ID 317963, 8 pages
http://dx.doi.org/10.1155/2013/317963
Research Article

Biosynthesis of Silver Chloride Nanoparticles Using Bacillus subtilis MTCC 3053 and Assessment of Its Antifungal Activity

Environmental Nanotechnology Division, Sri Paramakalyani Centre for Environmental Sciences, Manonmaniam Sundaranar University, Alwarkurichi, Tamil Nadu 627412, India

Received 29 June 2013; Accepted 28 July 2013

Academic Editors: Z. Jiang, P. S. Khiew, and N. Revaprasadu

Copyright © 2013 Kanniah Paulkumar et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The present investigation reported the synthesis of silver chloride nanoparticles using Bacillus subtilis. The adsorption of colloidal silver chloride nanoparticles showed an intense peak at the wavelength of 400 nm after 20 hrs of biomass incubation. The size of the silver nanoparticles ranges from 20 to 60 nm which was obtained from transmission electron microscope (TEM). The X-ray diffraction (XRD) pattern confirmed the crystalline nature of the nanoparticles. The bright circular spots of selected diffraction area (SAED) pattern also confirmed the good crystalline nature of the silver chloride nanoparticles with high magnification of TEM images. The presence of nitrate reductase enzyme in the cellular membrane of B. subtilis was confirmed by sodium dodecyl (SDS) polyacrylamide gel electrophoresis and it was found that the molecular weight is 37 kDa. The possible functional groups of the reductase enzyme in B. subtilis were identified by Fourier transform infrared spectroscopy (FTIR). Finally, antifungal activity of silver chloride nanoparticle was examined against Candida albicans, Aspergillus niger, and Aspergillus flavus. We conclude that the synthesis of silver chloride nanoparticles using microorganisms is more economical and simple. The antifungal property of silver chloride nanoparticles will play a beneficial role in biomedical nanotechnology.