A theoretical model to estimate inactivation effects of OH radicals on marine Vibrio sp. in bubble-shock interaction

Y Huang; J Wang; A Abe; Y Wang; T Du; C Huang

doi:10.1016/j.ultsonch.2018.10.001

A theoretical model to estimate inactivation effects of OH radicals on marine Vibrio sp. in bubble-shock interaction

Ultrason Sonochem. 2019 Jul:55:359-368. doi: 10.1016/j.ultsonch.2018.10.001. Epub 2018 Oct 4.

Authors

Y Huang¹, J Wang², A Abe³, Y Wang⁴, T Du⁵, C Huang⁵

Affiliations

¹ Key Laboratory for Mechanics in Fluid Solid Coupling System, Institute of Mechanics, Chinese Academy of Sciences, No.15 Beisihuanxi Road, Beijing 100190, China; High School Affiliated to Renmin University of China, Beijing 100080, China.
² Key Laboratory for Mechanics in Fluid Solid Coupling System, Institute of Mechanics, Chinese Academy of Sciences, No.15 Beisihuanxi Road, Beijing 100190, China; School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: wangjingzhu@imech.ac.cn.
³ Graduate School of Maritime Sciences, Kobe University, 5-1-1 Fukaeminami-machi, Kobe 658-0022, Japan.
⁴ Key Laboratory for Mechanics in Fluid Solid Coupling System, Institute of Mechanics, Chinese Academy of Sciences, No.15 Beisihuanxi Road, Beijing 100190, China; School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: wangyw@imech.ac.cn.
⁵ Key Laboratory for Mechanics in Fluid Solid Coupling System, Institute of Mechanics, Chinese Academy of Sciences, No.15 Beisihuanxi Road, Beijing 100190, China; School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China.

PMID: 30852154
DOI: 10.1016/j.ultsonch.2018.10.001

Abstract

A theoretical model for estimating inactivation effects on marine Vibrio sp. is developed from the viewpoint of the chemical action of the OH radicals induced by interaction of bubbles with shock waves. It consists of a biological probability model for cell viability and a bubble dynamic model for its collapsing motion due to the shock pressures. The biological probability model is built by defining a sterilized space of the OH radicals. To determine the radius of the sterilized space, the Herring equation is solved in the bubble dynamic model in consideration of the effect of the heat conductivity and mass transportation. Furthermore, the pressure waveform of incident shock wave used in the model is obtained with the pressure measurement. On the other hand, a bio-experiment of marine Vibrio sp. is carried out using a high-voltage power supply in a cylindrical water chamber. Finally, the viability ratio of marine bacteria estimated by the theoretical model is examined under the experimental conditions of this study. In addition, we also discuss the influence of bubble initial size for predicting the inactivation effects.

Keywords: Biological probability model; Bubble-shock interaction; Chemical inactivation; Generation and diffusion of OH radicals; Theoretical model.

MeSH terms

Hydroxyl Radical / pharmacology*
Microbial Viability / drug effects*
Models, Theoretical*
Pressure
Ultrasonic Waves*
Vibrio / drug effects*
Vibrio / physiology*

Substances

Hydroxyl Radical