Disinfection Effect of Ozone Gas and Application to Linen Materials

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  • オゾンガスによる消毒効果とリネン材への適用検討
  • オゾン ガス ニ ヨル ショウドク コウカ ト リネンザイ エノ テキヨウ ケントウ

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Abstract

  Ozone gas has high oxidation power similar to that of fluorine gas. The ozone disinfection effect against various types of bacteria, the permeability of ozone gas into various materials and its effectiveness were assessed for practical sterilization of hospital linen.<br>   Disinfection effect was evaluated by testing with S. aureus and P. aeruginosa inoculated in agar medium, and determining the number of surviving bacteria. Disinfection effect of 90% or more was presumed by processing in ozone gas with CT value (product of ozone gas concentration C and contact time T) of 1,000 ppm/min. The same disinfection effect was confirmed through the action on bacteria inoculated onto a membrane filter, as a model for hospital linen processing.<br>   To confirm the permeability of the ozone gas into the hospital linen material, the density of the ozone gas was measured on the surface and inside each part of the object. Permeability of about 70% was obtained in two futons folded into four and piled. Findings also indicated that the ozone gas processing did not cause any effect on several test targets.<br>   These findings show that ozone gas has high potential for application to the disinfection of hospital linen material.<br>

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