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ISSN: 2157-7439

Journal of Nanomedicine & Nanotechnology
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Research Article

Effect of ZnO Thin Films on Survival of Pseudomonas Cells

Ivanova IA1*, Tasheva-Terzieva E2, Angelov O3, Krusteva L4, Andonova I1, Papazova K4, Dimova-Malinovska D3 and Dushkin C4

1Department of General and Industrial Microbiology, Faculty of Biology, University of Sofia “St. Kl. Ohridski”,1164 Sofia, Bulgaria

2Department of Zoology and Anthropology, Faculty of Biology, University of Sofia “St. Kl. Ohridski”, Bulgaria

3Central Laboratory of Solar Energy and New Energy Sources, Bulgarian Academy of Sciences, Sofia, Bulgaria

4Laboratory of Nanoparticle Science and Technology, Department of General and Inorganic Chemistry, University of Sofia “St. Kl. Ohridski”, Bulgaria

*Corresponding Author:
Dr. Ivanova IA
Department of General and Industrial Microbiology
Faculty of Biology, 1164 Sofia, Bulgaria
Tel: +359885933242, +359898753883
E-mail: [email protected]

Received Date: August 20, 2012; Accepted Date: October 16, 2012; Published Date: October 20, 2012

Citation: Ivanova IA, Tasheva-Terzieva E, Angelov O, Krusteva L, Andonova I, et al. (2012) Effect of ZnO Thin Films on Survival of Pseudomonas Cells. J Nanomed Nanotechol 3:148. doi:10.4172/2157-7439.1000148

Copyright: © 2012 Ivanova IA, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Thin films of ZnO nanoparticles obtained by magnetron sputtering deposition and wet chemical methods are investigated for their antibacterial effect on Gracilicutes- bacteria Pseudomonas putida. This bacterium is used as a sensitive standard in an international water quality test, ISO 10712:1995. It was chosen for toxic assessment of thin ZnO films, prepared by magnetron sputtering, sol-gel dip coating and chemical bath deposition methods. Washed and stained with Dead/Live bacterial kit suspension is evenly distributed on thin ZnO films and the survived cells are counted every 2 hours. Two microbiological methods are used: direct counting with epifluorescent microscope Leika DM 5500B and cultivation in nutrient medium. The results are processed with different statistical methods and show bactericidal effect of thin ZnO films. The surface relief of thin nanostructured film is crucial for the antibacterial effect and the fastest bactericidal effect demonstrates the ZnO film obtained by sol-gel dip coating.

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