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Journal of Nanomaterials
Volume 2011, Article ID 573429, 7 pages
http://dx.doi.org/10.1155/2011/573429
Research Article

Synthesis of Plant-Mediated Silver Nanoparticles Using Dioscorea batatas Rhizome Extract and Evaluation of Their Antimicrobial Activities

Department of Nanomaterial Chemistry, Dongguk University, Gyeongju 780-714, Republic of Korea

Received 20 April 2011; Revised 24 May 2011; Accepted 8 June 2011

Academic Editor: Ugur Serincan

Copyright © 2011 P. C. Nagajyothi and K. D. Lee. 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 eco-friendly synthesis of nanoparticles through various biological means helps to explore various plants for their ability to synthesize silver nanoparticles (AgNPs). Here we have synthesized AgNPs by using rhizome extract of Dioscorea batatas at 8 0 C as well as room temperature ( 2 5 C ). AgNPs were characterized under UV-vis spectrophotometer, SEM, FTIR, XRD, and EDX. The antimicrobial activity of AgNPs was evaluated on gram positive (B. substilis and S. aureus), gram negative (E. coli), and fungi (S. cerivisae and C. albicans). At room temperature, S. cerivisae and C. albicans were found to be more susceptible to AgNPs than at 8 0 C .