Inactivation efficacy and mechanisms of plasma activated water on bacteria in planktonic state
Y.‐M. Zhao, Shikha Ojha, Catherine M. Burgess, Da‐Wen Sun, Brijesh K. Tiwari
Abstract
AIMS: The study aimed to investigate the inactivation efficacy and mechanisms of plasma activated water (PAW) on selected bacteria in planktonic state. METHODS AND RESULTS: were measured. The results demonstrated that inactivation efficacy was in positive correlation with voltage and exposure time. Gram-negative bacteria were more susceptible to PAW than Gram-positive bacteria. Morphology damage was observed for all the bacterial species. PAW was significantly acidified, conductivity and ORP were significantly increased, and reactive species were detectable after 48 h. CONCLUSIONS: This study offered a better understanding of the inactivation mechanisms of PAW, and the inactivation efficacy can be affected by voltage, exposure time and bacterial species. SIGNIFICANCE AND IMPACT OF THE STUDY: This study demonstrated the potential usage of PAW as an alternative disinfectant.