ANTIMICROBIAL ACTIVITIES OF TIO2 NANOPARTICLE AGAINST ESCHERICHIA COLI AND STAPHYLOCOCCUS AUREUS

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BARZEGARY F.; JAVED A.; REZAEI ZARCHI S.

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Journal: Journal of Shahid Sadoughi University of Medical Sciences Year:2010 | Volume:18 | Issue:1 (69) Page(s): 39-46

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Title

ANTIMICROBIAL ACTIVITIES OF TIO2 NANOPARTICLE AGAINST ESCHERICHIA COLI AND STAPHYLOCOCCUS AUREUS

Author(s)

BARZEGARY F. | JAVED A. | REZAEI ZARCHI S. | Issue Writer Certificate

Keywords

ESCHERICHIA COLIQ3

TITANIUM DIOXIDEQ2

STAPHYLOCOCCUS AUREUSQ2

NANOPARTICLESQ2

Abstract

Introduction: Organic antibacterial materials have been used as insecticides and bactericides for many years. Unfortunately, high temperatures in manufacturing process reduce their antibacterial properties. However, inorganic materials of antibacterial agents have excellent bacterial resistance and thermal stability. Over the past few decades, inorganic NANOPARTICLES whose structures exhibit significantly novel and improved physical, chemical and biological properties and functionality due to their nano-scale size have elicited much interest. Methods: The aim of this study was to investigate the antibacterial properties of one kind of nano-specimen (TiO2 nanoparticle) against ESCHERICHIA COLI and Streptococcus aureus. Our study was research perusal. In the first study, the optical density of E. coli and S. aureus cultures were observed in the presence of 0.01%, 0.75% and 1.5% of TiO2. In the second study, 6.3 log CFU/ml of E. coli and S. areus were separately exposed to 1.5% TiO2 at 37°C in water. In third study, we studied thew growth of E.coli in solid medium with and without NANOPARTICLES. Results: The presence of 0.01% TiO2 NANOPARTICLES didn’t have a statistically significant effect, but in the presence of 0.75% and 1.5% NANOPARTICLES, the bacterial colonies decreased significantly. In the control group, bacterial cells survival was nearly 13 days, while complete cell death of E. coli was seen when 1.5% TiO2 was applied for 24 hours. The same experiment for S. aureu, showed that complete cell death occured when the bacterial culture was exposed to 1.5% TiO2 for 16 hours. It was shown that presence of 1.5% TiO2 in the solid medium suppressed the growth of E. coli 5.6 times more (p < 0.001). Discussion: Our findings showed antibacterial effects of TiO2 NANOPARTICLES against both bacteria, but S. areus bacteria were more sensitive to NANOPARTICLES as compared to E. coli bacteri.

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APA: Copy

BARZEGARY, F., JAVED, A., & REZAEI ZARCHI, S.. (2010). ANTIMICROBIAL ACTIVITIES OF TIO2 NANOPARTICLE AGAINST ESCHERICHIA COLI AND STAPHYLOCOCCUS AUREUS. JOURNAL OF SHAHID SADOUGHI UNIVERSITY OF MEDICAL SCIENCES, 18(1 (69)), 39-46. SID. https://sid.ir/paper/36382/en

Vancouver: Copy

BARZEGARY F., JAVED A., REZAEI ZARCHI S.. ANTIMICROBIAL ACTIVITIES OF TIO2 NANOPARTICLE AGAINST ESCHERICHIA COLI AND STAPHYLOCOCCUS AUREUS. JOURNAL OF SHAHID SADOUGHI UNIVERSITY OF MEDICAL SCIENCES[Internet]. 2010;18(1 (69)):39-46. Available from: https://sid.ir/paper/36382/en

IEEE: Copy

F. BARZEGARY, A. JAVED, and S. REZAEI ZARCHI, “ANTIMICROBIAL ACTIVITIES OF TIO2 NANOPARTICLE AGAINST ESCHERICHIA COLI AND STAPHYLOCOCCUS AUREUS,” JOURNAL OF SHAHID SADOUGHI UNIVERSITY OF MEDICAL SCIENCES, vol. 18, no. 1 (69), pp. 39–46, 2010, [Online]. Available: https://sid.ir/paper/36382/en

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