Comparative evaluation of the virucidal effect of remote and direct cold air plasmas with UV-C

Ankit Moldgy, Hamada Aboubakr, Gaurav Nayak, Sagar Goyal, Peter Bruggeman

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Cold atmospheric pressure plasma is an emerging nonthermal processing technology for the decontamination of foodborne pathogens. This study presents a comparative evaluation of the energy efficiency of the decontamination by three different dielectric barrier discharge (DBD) setups operating in air against Feline calicivirus with a UV-C lamp. Significant enhancement of the energy efficiency was achieved with a lab-scale batch reactor prototype, which employed surface DBD, leading to similar energy per unit area requirements as that for UV-C. A key advantage of plasma over UV-based disinfection systems is that plasmas are not limited by shadowing effects. Nonetheless, unlike UV-C, the virucidal efficacy of plasma is significantly reduced for dry samples and remote plasma treatment is only effective against wet samples.

Original languageEnglish (US)
Article number1900234
JournalPlasma Processes and Polymers
Volume17
Issue number4
DOIs
StatePublished - Apr 1 2020

Bibliographical note

Funding Information:
The authors acknowledge Kyocera Inc., Japan for providing the electrode array used in this study. This project was supported by the Agriculture and Food Research Initiative of the USDA's National Institute of Food and Agriculture, grant number 2017-67017-26172.

Funding Information:
The authors acknowledge Kyocera Inc., Japan for providing the electrode array used in this study. This project was supported by the Agriculture and Food Research Initiative of the USDA's National Institute of Food and Agriculture, grant number 2017‐67017‐26172.

Keywords

  • UV-C radiation
  • energy efficiency
  • nonthermal food processing technology
  • plasma decontamination
  • virus

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