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      Plant extract mediated synthesis of silver and gold nanoparticles and its antibacterial activity against clinically isolated pathogens.

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          Abstract

          Biosynthesis of nanoparticles is under exploration is due to wide biomedical applications and research interest in nanotechnology. Bioreduction of silver nitrate (AgNO(3)) and chloroauric acid (HAuCl(4)) for the synthesis of silver and gold nanoparticles respectively with the plant extract, Mentha piperita (Lamiaceae). The plant extract is mixed with AgNO(3) and HAuCl(2), incubated and studied synthesis of nanoparticles using UV-Vis spectroscopy. The nanoparticles were characterized by FTIR, SEM equipped with EDS. The silver nanoparticles synthesized were generally found to be spherical in shape with 90 nm, whereas the synthesized gold nanoparticles were found to be 150 nm. The results showed that the leaf extract of menthol is very good bioreductant for the synthesis of silver and gold nanoparticles and synthesized nanoparticles active against clinically isolated human pathogens, Staphylococcus aureus and Escherichia coli.

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          Author and article information

          Journal
          Colloids Surf B Biointerfaces
          Colloids and surfaces. B, Biointerfaces
          1873-4367
          0927-7765
          Jul 1 2011
          : 85
          : 2
          Affiliations
          [1 ] Department of Microbiology, School of Life Sciences, Bharathidasan University, Palkaliperur, Tiruchirappalli 620 024, India.
          Article
          S0927-7765(11)00144-5
          10.1016/j.colsurfb.2011.03.009
          21466948
          aad880f9-dfe1-419f-b095-cad64cc72309
          Crown Copyright © 2011. Published by Elsevier B.V. All rights reserved.
          History

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