P35 超音波殺菌の基礎研究 : OHラジカルの効果

概要

論文の詳細を見る
The ultrasonic inactivation method has been paid attention because it does not generate poisonous substance and heat. However the inactivation mechanism is complex and has not been clarified yet. The purpose of this study is to clarify the mechanism of the ultrasonic inactivation. The inactivation experiments were carried out by using E.coli and S.mutans with the different ultrasonic power at 500kHz and 10℃. In the case of the E.coli, change in the inactivation rate was observed at high ultrasonic power. However in the case of S.mutans, such change was not observed. The inactivation rate is proportional to the ultrasonic power as for both E.coli and S.mutans. The inactivation experiments with addition of the radical trap agent (t-butanol) were carried out. Then the inactivation rate decreased greatly. The above results indicate that the ultrasonic inactivation mechanism consists of two or more mechanisms and the main mechanism is inactivation of microorganism by the effect of OH radical.
日本ソノケミストリー学会の論文
2005-10-14