PROBLEM TO BE SOLVED: To provide a peracetic acid-including microbicidal composition effective to destructive funguses such as Paenibacillus bacteria and Bacillus cereus forming spores and having strong resistance to a peracetic acid/hydrogen peroxide formulation.SOLUTION: It is known that, regarding Paenibacillus bacteria and Bacillus cereus as spore forming bacteria which are high in chemical resistance, sterilization is difficult even if the conventional peracetic acid formulation is used. Regarding Bacillus cereus and Paenibacillus bacteria as spore forming bacteria, It has been found that a peracetic acid composition, in which the including ratio of hydrogen peroxide in a peracetic acid equilibrium composition is made lower, exhibits a high sterilization effect by utilizing a hydrogen peroxide content decomposition enzyme, and even in treatment for a short time, an effective peracetic acid-including microbicidal composition has been completed.COPYRIGHT: (C)2014,JPO&INPIT【課題】芽胞を形成し、過酢酸/過酸化水素製剤に強い抵抗性を持つパエニバチルス属細菌やバチルス・セレウスなどの有害菌に対する有効な過酢酸含有殺菌組成物を提供する。【解決手段】従来の過酢酸製剤を用いても、耐薬品性の高い芽胞形成菌であるパエニバチルス属細菌やバチルス・セレウスに関しては、殺菌が難しいことが知られている。芽胞形成菌であるバチルス・セレウスやパエニバチルス属細菌に対し、過酸化水素分解酵素を利用して過酢酸平衡組成物中の過酸化水素含有比率を低くした過酢酸組成物が高い殺菌効果を示すことを見出し、短時間での処理でも有効な過酢酸含有殺菌組成物を完成させた。【選択図】なし
