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Antibacterial activity of ZnO powder with crystallographic orientation

Ohira, Toshiaki ; Yamamoto, Osamu ; Iida, Yasuhiro ; Nakagawa, Zenbe-e

Journal of materials science. Materials in medicine, 2008-03, Vol.19 (3), p.1407-1412 [Periódico revisado por pares]

Boston: Springer US

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Título:
Antibacterial activity of ZnO powder with crystallographic orientation
Autor: Ohira, Toshiaki ; Yamamoto, Osamu ; Iida, Yasuhiro ; Nakagawa, Zenbe-e
Assuntos: Algorithms ; Anti-Bacterial Agents - chemistry ; Anti-Bacterial Agents - pharmacology ; Biochemistry ; Biomaterials ; Biomedical Engineering and Bioengineering ; Biomedical materials ; Ceramics ; Chemistry and Materials Science ; Composites ; Crystallography, X-Ray ; Escherichia coli ; Glass ; Materials Science ; Microbial Sensitivity Tests ; Microbial Viability - drug effects ; Molecular Conformation ; Natural Materials ; Particle Size ; Polymer Sciences ; Powders - chemistry ; Regenerative Medicine/Tissue Engineering ; Staphylococcus aureus ; Studies ; Surfaces and Interfaces ; Thin Films ; Zinc ; Zinc Oxide - chemistry ; Zinc Oxide - pharmacology
É parte de: Journal of materials science. Materials in medicine, 2008-03, Vol.19 (3), p.1407-1412
Notas: ObjectType-Article-1
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Descrição: ZnO powder with crystallographic orientation was prepared from the mixed aqueous solution of zinc chloride, tri-ethanol amine and thio-urea. From X-ray diffraction measurement, as-prepared powder was found to have the orientation along a – b axes of hexagonal structure, and a needle-like shape with the aspect ratio of 5 was observed by scanning electron microscope, indicating that as-prepared powder had crystallographic orientation. In the tests of antibacterial activity by colony count method, ZnO powders with and without crystallographic orientation were used in present work. Survival ratio of bacteria decreased with increasing powder concentration, i.e., increase in antibacterial activity. The antibacterial activity in ZnO powder with crystallographic orientation was weaker than that in commercial ZnO powder without orientation at same powder concentration. Regarding specific surface area of the powders used in antibacterial tests, however, antibacterial activity in powder with orientation was found to be similar to that without orientation; that is, the crystallographic orientation of ZnO did not affect antibacterial activity. The activity toward Staphylococcus aureus was stronger than that toward Escherichia coli , irrespective of the kind of powders.
Editor: Boston: Springer US
Idioma: Inglês

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Antibacterial activity of ZnO powder with crystallographic orientation

Ohira, Toshiaki ; Yamamoto, Osamu ; Iida, Yasuhiro ; Nakagawa, Zenbe-e

Boston: Springer US

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