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Inactivation of Shewanella putrefaciens by Plasma Activated Water

Inactivation of Shewanella putrefaciens by Plasma Activated Water Plasma activated water (PAW) generated by atmospheric-pressure air microplasma arrays is a solution containing a variety of reactive species. Here we investigate the effects of different applied voltage and water-activated time on bactericidal activities against Shewanella putrefaciens (S. putrefaciens). Our measurements showed that the sterilization efficiency of S. putrefaciens by PAW could be up to 2.0 Log Reduction. Scanning electron microscopy image and DNA concentration measurement showed that the S. putrefaciens cells were damaged and deformed due to the PAW treatment. The physicochemical properties of PAW treated by different applied voltage and water-activated time were evaluated, including pH value, initial PAW temperature, and the concentrations of plasma-activated species, such as H2O2, NO 3 − , NO 2 − , and O3. Analysis indicates that the sterilization efficiency of S. putrefaciens treated by PAW was mainly determined by H2O2 concentration and pH value of PAW. This study provides a basis for the PAW potential applications in the disinfection of rotten food. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plasma Chemistry and Plasma Processing Springer Journals

Inactivation of Shewanella putrefaciens by Plasma Activated Water

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Publisher
Springer Journals
Copyright
Copyright © 2018 by Springer Science+Business Media, LLC, part of Springer Nature
Subject
Chemistry; Inorganic Chemistry; Classical Mechanics; Characterization and Evaluation of Materials; Mechanical Engineering
ISSN
0272-4324
eISSN
1572-8986
DOI
10.1007/s11090-018-9911-5
Publisher site
See Article on Publisher Site

Abstract

Plasma activated water (PAW) generated by atmospheric-pressure air microplasma arrays is a solution containing a variety of reactive species. Here we investigate the effects of different applied voltage and water-activated time on bactericidal activities against Shewanella putrefaciens (S. putrefaciens). Our measurements showed that the sterilization efficiency of S. putrefaciens by PAW could be up to 2.0 Log Reduction. Scanning electron microscopy image and DNA concentration measurement showed that the S. putrefaciens cells were damaged and deformed due to the PAW treatment. The physicochemical properties of PAW treated by different applied voltage and water-activated time were evaluated, including pH value, initial PAW temperature, and the concentrations of plasma-activated species, such as H2O2, NO 3 − , NO 2 − , and O3. Analysis indicates that the sterilization efficiency of S. putrefaciens treated by PAW was mainly determined by H2O2 concentration and pH value of PAW. This study provides a basis for the PAW potential applications in the disinfection of rotten food.

Journal

Plasma Chemistry and Plasma Processing – Springer Journals

Published: Jun 1, 2018

References

  • Antimicrobials in food
    Cords, BR; Burnett, SL; Hilgren, J; Finley, M; Magnuson, J
  • Effect of hydrogen peroxide concentration and pH on inactivation kinetics of Escherichia coli
    Raffellini, S; Guerrero, S; Alzamora, SM