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Journal of Nanoparticles
Volume 2013 (2013), Article ID 431218, 6 pages
http://dx.doi.org/10.1155/2013/431218
Research Article

Antibacterial Activity of Silver Nanoparticles Synthesized by Bark Extract of Syzygium cumini

Amity Institute of Microbial Technology, Amity University Uttar Pradesh, Sector 125, Noida 201303, India

Received 31 January 2013; Revised 15 March 2013; Accepted 3 April 2013

Academic Editor: Amir Kajbafvala

Copyright © 2013 Ram Prasad and Vyshnava Satyanarayana Swamy. 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 unique property of the silver nanoparticles having the antimicrobial activity drags the major attention towards the present nanotechnology. The environmentally nontoxic, ecofriendly, and cost-effective method that has been developed for the synthesis of silver nanoparticles using plant extracts creates the major research interest in the field of nanobiotechnology. The synthesized silver nanoparticles have been characterized by the UV-visible spectroscopy, atomic force microscopy (AFM), and scanning electron microscopy (SEM). Further, the antibacterial activity of silver nanoparticles was evaluated by well diffusion method, and it was found that the biogenic silver nanoparticles have antibacterial activity against Escherichia coli (ATCC 25922), Staphylococcus aureus (ATCC 29213), Pseudomonas aeruginosa (ATCC 27853), Azotobacter chroococcum WR 9, and Bacillus licheniformis (MTCC 9555).