Effects of pH and concentration on antibacterial activity of ZnO nanofluids against Staphylococcus aureus
نویسندگان
چکیده
Nanoparticle metal oxides represent new classes of important materials that are increasingly being developed for use in research and health-related applications. Highly ionic metal oxides are interesting not only for their wide variety of physical and chemical properties but also for their antibacterial activity. Although the in vitro antibacterial activity and efficacy of regular zinc oxides have been investigated, little is known about the antibacterial activity of nanoparticles of ZnO. In this work, the antibacterial activity of ZnO nanofluids was tested against Staphylococcus aureus (ATCC:25923) at different concentration and broad range of pH. Antibacterial tests were performed by measuring the growth curve of S.aureus in the TSB broth medium in the presence of nanofluids containing 1.5, 0.75, 0.375, 0.187,and 0.09 2g/ml of ZnO nanoparticles (ZnO NP) and pH range of 7-10. Antibacterial activity increased with increasing nanoparticle concentration . Also, it seems that basic pH improves antibacterial activity of ZnO NP.
منابع مشابه
Effects of pH and Temperature on Antibacterial Activity of Zinc Oxide Nanofluid Against Escherichia coli O157: H7 and Staphylococcus aureus
BACKGROUND Zinc oxide nanoparticles (ZnO NPs) are known as one of the important inorganic materials used in research and health-related applications with effective antibacterial activities. Although the toxic effects of ZnO NPs have already been evaluated, more information is required to understand the possible mechanisms. OBJECTIVES The aim of the present study was to determine the influence...
متن کاملEffects of combination of magnesium and zinc oxide nanoparticles and heat on Escherichia coli and Staphylococcus aureus bacteria in milk
Objective: The objective of this study was to investigate the antibacterial activities of combination of MgO and ZnO nanoparticles in the presence of heat against Escherichia coli and Staphylococcus aureus. Materials and Methods:Bacteria were grown on either agar or broth media followed by the addition of ZnO and MgO nanoparticles. Then the combined effect of ZnO and MgO nanoparticles was inves...
متن کاملChemical synthesis of Zinc Oxide (ZnO) nanoparticles and their antibacterial activity against a clinical isolate Staphylococcus aureus
In this study, Zinc Oxide nanoparticles (ZnONPs) were synthesized by chemical method and their antibacterial efficiency against a clinical isolate of Staphylococcus aureus was studied. The Zinc Oxide nanoparticles have shown a commendable inhibition effect on the growth of most notorious bacterial pathogen S.aureus. The nanoparticles size and shapes were characterized by trans...
متن کاملChemical synthesis of Zinc Oxide (ZnO) nanoparticles and their antibacterial activity against a clinical isolate Staphylococcus aureus
In this study, Zinc Oxide nanoparticles (ZnONPs) were synthesized by chemical method and their antibacterial efficiency against a clinical isolate of Staphylococcus aureus was studied. The Zinc Oxide nanoparticles have shown a commendable inhibition effect on the growth of most notorious bacterial pathogen S.aureus. The nanoparticles size and shapes were characterized by trans...
متن کاملInvestigating the Antibacterial Activity of ZnO Nano-particles Suspension Containing Acetic Acid against Staphylococcus aureus in Mango Juice
Background and Objectives: Zinc oxide (ZnO) nano-particles have been proven to have strong antibacterial activity against food borne pathogens. The practical applications of different concentrations (Control, 0, 1, 2, 4, 6 and 8 mM) of ZnO suspensions containing 1% acetic acid were investigated against the pathogenic bacteria like Staphylococcus aureus. Materials and Methods: The projects of l...
متن کامل