The effect of ZnO nanoparticles on the Vibrio species isolated from coastal water of the Persian Gulf port


Mohammad Malakootian 1 , * , Ali Toolabi 2 , Ali Javadi 3 , Mohammad Ahmadian 4 , Mohammadreza Zandmonfared 5

1 Professor Department of Environmental Health, Research Center of Environmental Health, Kerman University of Medical Sciences, Kerman, Iran.

2 Instructor Department of Environmental Health, Bam University of Medical Sciences, Bam, Iran.

3 MSc Student of Microbiology, Kerman University of Medical Sciences, Kerman, Iran.

4 MSc of Environmental Health, Social Development and Health Promotion Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran.

5 MSc Student of Environmental Health, Islamic Azad University, Qom Branch, Qom, Iran.

How to Cite: Malakootian M, Toolabi A, Javadi A, Ahmadian M, Zandmonfared M. The effect of ZnO nanoparticles on the Vibrio species isolated from coastal water of the Persian Gulf port, Hormozgan Med J. 2013 ; 17(4):e88185.


Hormozgan Medical Journal: 17 (4); e88185
Published Online: March 11, 2013
Article Type: Research Article
Received: September 24, 2012
Accepted: March 11, 2013


Introduction: Using zinc oxide nanoparticles, as a catalyst removal of fecal pollution
indicator bacteria in water, has been studied as a model of bacterial contamination. This
study aims to determine the toxicity and selection of appropriate indicators to evaluate the
toxicity of zinc oxide nanoparticles on the isolated bacteria Vibrio species of Bushehr coastal
Methods: In this experimental study, 100 samples of sea water off the coast of Persian
Gulf in Bushehr coastal areas were selected. 10 centigrade of each sample was cultured on
the TCBS medium. In the next step, differential tests were conducted on colonies of positive
oxidase. The specific concentrations of nanoparticle were prepared and paper discs were
impregnated with the concentrations and then bacterial isolates from the 0.5 Mc-Farland
suspensions was prepared. After incubation, inhibition zone was reported in millimeters at
each concentration. Data analysis was performed using by SPSS 16 Software.
Results: The strains of bacteria detected by culturing samples of raw water including
Vibrio cholerae, Vibrio parahaemolyticus, Vibrio vulnificus and Vibrio mimicus. Minimum
and maximum number of Vibrio strains were, Vibrio cholerae and Vibrio parahaemolyticus,
respectively. Elimination of Vibrio Cholerae, Vibrio Parahaemolyticus, Vibrio Vulnificus
and Vibrio Mimicus strais in concentration of 6000 mg/L zinc oxide nanoparticles were
95%, 90%, 75% and 70%, respectively.
Conclusion: Due to significant effect of nanoparticle in removal of genus Vibrios,
economic justification and other factors should be considered in application of nanoparticles,
in eliminating bacterial pathogens in water industry.



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