Disinfection Effect of Hydrotalcite Compounds Containing Antimicrobial Metals Against Microorganisms in Water.

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概要

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• Hydrotalcites containing copper (Cu-HT) were synthesized using MgCl<SUB>2</SUB>, AlCl<SUB>3</SUB>and CuCl<SUB>2</SUB>, and hydrotalcites containing zinc (Zn-HT) were synthesized using MgCl<SUB>2</SUB>, AlCl<SUB>3</SUB> and ZnCl<SUB>2</SUB> Their disinfection activities against <I>Escherichia coli, Staphylococcus aureus</I>and<I>E. coli</I> phage Q β (phage Qβ) were investigated by the shake-flask method. Cu-HT possessed strong disinfection activities against <I>E. coil</I> and phage Qβ, whereas Zn-HT showed bactericidal activity against <I>E. coil, S. aureus</I> and phage Qβ. Copper elution from Cu-HT was undetectable during the disinfection test. The disinfection activity of Cu-HT was due to the presence of copper. The pH of Cu-HT suspensions was pH 9.3 as a result of the hydration reaction at the surfaces of the Cu-HT particles. The remarkable disinfection activity of Cu-HT against phage Qβ seemed to be based on the cooperative action of copper in Cu-HT and the direct contact of phage Qβ cells to the hydroxyl layers on the surfaces of the Cu-HT particles. We propose that Cu-HT can be used as an alternative disinfectant to chlorine in a water purification system.

• 日本防菌防黴学会の論文

著者

• SATO Toshio

  Faculty of Engineering, Toin University of Yokohama

• KAWAMOTO ARIUMI

  Tomita Pharmaceutical Co. Ltd.

• Sunayama Syunji

  Faculty Of Life And Environmental Science Shimane University

• OHKUBO AKIRA

  Tomita Pharmaceutical Co. Ltd

• SUZUK TAKASHI

  Yamanashi University

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