Bactericidal properties of nanoscale zinc(II) and titanium (IV) oxides of different nature and their nanocomposites with polystyrene

The samples with nano-titanium dioxide (X-ray amorphous, η-modification, Degussa P25 mixture of rutile and anatase, Hombifine N, and Hombikat UV100 with anatase) and hexagonal nano-ZnO both in pure form and as a part of polystyrene (PS) nanocomposites were studied for antibacterial activity in the dark against Staphylococcus aureus, Staphylococcus epidermidis, Escherichia coli, Bacillus antracoides, and Candida albicans microorganisms by the Kirby-Bauer disk diffusion method. Among the starting samples, ZnO exhibits ABA against all bacterial cultures in use; the sample with the η-phase exhibits ABA against Staphylococcus aureus, Staphylococcus epidermidis, and Bacillus antracoides; the X-ray amorphous TiO2 exhibits ABA against Staphylococcus aureus and Candida albicans; and the remaining samples have no ABA. The diameters of the microbial growth retardation zone for the η-phase/PS, X-ray amorphous TiO2/PS, and ZnO/PS nanocomposites were found to be less than those for the starting oxides; the range of microbes inhibited by ZnO/PS was smaller since it exhibited no ABA against Candida albicans, while such activity remained in the X-ray amorphous TiO2/PS nanocomposite. © 2016, Pleiades Publishing, Ltd.

Serkhacheva N.S.1 , Yashina N.V. 2 , Prokopov N.I. 1 , Gaynanova A.A.1 , Kuz’micheva G.M.1 , Domoroshchina E.N.1 , Sadovskaya N.V.3 , Prokudina N.A.4 , Gervald A.Y.1
Номер выпуска
  • 1 Moscow Technological University, pr. Vernadskogo 86, Moscow, 119571, Russian Federation
  • 2 Peoples’ Friendship University of Russia, ul. Miklukho-Maklaya 6, Moscow, 117198, Russian Federation
  • 3 Karpov Institute of Physical Chemistry, per. Obukha 3-1/12, build. 6, Moscow, 105064, Russian Federation
  • 4 Scientific Production Center ASPECT, ul. Sakharova 6, Dubna, Moscow region 141980, Russian Federation
Ключевые слова
Bacteria; Bacteriology; Candida; Escherichia coli; Microorganisms; Nanocomposites; Oxide minerals; Polystyrenes; Titanium; Titanium dioxide; Yeast; Zinc compounds; Zinc oxide; Anti-bacterial activity; Bacterial cultures; Bactericidal properties; Diffusion method; Nano-titanium dioxide; Rutile and anatase; Staphylococcus aureus; Staphylococcus epidermidis; Titanium oxides
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