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Antimicrobial Activity of Titanium Dioxide and Zinc Oxide Nanoparticles Supported in 4A Zeolite and Evaluation the Morphological Characteristic Publisher Pubmed



Azizilalabadi M1, 6 ; Ehsani A2, 7 ; Divband B3, 8 ; Alizadehsani M4
Authors
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Authors Affiliations
  1. 1. Students’ Research Committee, Department of Food Sciences and Technology, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
  2. 2. Nutrition Research Center, Department of Food Sciences and Technology, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
  3. 3. Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
  4. 4. Students’ Scientific Research center, Food Safety and Hygiene Division, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  5. 5. Department of Food Sciences and Technology, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
  6. 6. Research Center for Environmental Determinants of Health (RCEDH), Kermanshah University of Medical Sciences, Kermanshah, Iran
  7. 7. Food and Drug safety research center, Tabriz university of medical science, Tabriz, Iran
  8. 8. Inorganic Chemistry Department, Faculty of Chemistry, University of Tabriz, Tabriz, C.P. 51664, Iran

Source: Scientific Reports Published:2019


Abstract

In this study, the antimicrobial activity of titanium dioxide (TiO2), zinc oxide (ZnO), and TiO2/ZnO nanoparticles supported into 4A zeolite (4A z) was assessed. Based on antimicrobial experiments, minimum inhibitory concentration (MIC90), minimum bactericidal concentration (MBC), fractional inhibitory concentration (FIC) and disc diffusion test were determined after 24 h of contact with the prepared nanocomposites. These results are in agreements with the results of disc diffusion test. During the experiments, the numbers of viable bacterial cells of Staphylococcus aureus, Pseudomonas fluorescens, Listeria monocytogenes and Escherichia coli O157:H7 decreased significantly. The crystallinity and morphology of nanoparticles were investigated by X-ray diffraction patterns (XRD), elemental mapping at the microstructural level by scanning electron microscopy (SEM) with energy dispersive X-ray spectrometry (EDS), and transmission electron microscopy (TEM). As a result, it was demonstrated that TiO2/ZnO nanoparticles supported in 4A zeolite could lead to an optimum activity as antimicrobial agents. © 2019, The Author(s).
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