弱酸性次亜塩素酸水溶液の各種微生物に対する殺菌効果

Microbicidal effect of weak acid hypochlorous solution on various microorganisms.

• Tomoko Ono
• Koji Yamashita
• Tomomi Murayama
• Toshio Sato

抄録

水にNaClOとHClを混合して製造したpH5.0～6.0の弱酸性次亜塩素酸水溶液の各種細菌，真菌，ウイルスに対する殺菌効果をin vitroで検討した。この弱酸性次亜塩素酸水溶液は、標準菌や臨床分離株などの広い範囲の微生物に対して、短時間で優れた殺菌効果を示した。また，次亜塩素酸水溶液の殺菌効果は，利用可能な塩素濃度に依存せず，HClO濃度に依存していた。これらの結果から，弱酸性次亜塩素酸水溶液は，病院や食品関連施設などで実用的な適用が可能であることがわかった。

We investigated the microbicidal effect of weak acid hypochlorous solutions of pH 5.0 - 6.0, produced by mixing NaClO and HCl in water, against various bacteria, fungi, and virus in vitro. The weak acid hypochlorous solution had excellent microbicidal effect against a broad microbicidal spectrum of standard strains and clinical isolates in a short time. The microbicidal effects of hypochlorous solutions did not depend on the available chlorine concentration but on the HClO concentration. These results show that the weak acid hypochlorous solution has practical applicability in such places as hospitals and establishments related to the food industry.