Sterilization of Escherichia coli by a coaxial microwave plasma flow

Takehiko Sato, Akiko Doi, Takuya Urayama, Tatsuyuki Nakatani, Takashi Miyahara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

An atmospheric low temperature plasma flow generated by microwave discharge utilizing a coaxial cable for microwave transmission has some advantages such as portability, simple configuration, and low power operation. It mainly consists of a cavity, a quartz discharge tube, a coaxial cable, a microwave power source and a gas supply system. Using this argon plasma source, we investigated to clarify effects of exposure temperature, exposure time, exposure distance, input power and gas flow rate on the number of surviving cells of Escherichia coli. A log reduction number of E. coli of at least 3 (10 -3) was obtained at exposure temperatures of 353 K when the exposure time was 600 seconds with a gas flow rate of 5 Sl/min and an input power of 400 W. Number of surviving cells decreases with increase of exposure time in any sterilization conditions.

Original languageEnglish
Title of host publicationConference Record of the 2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages767-770
Number of pages4
ISBN (Print)0780392086, 0780392086, 9780780392083
DOIs
Publication statusPublished - 2005
Event2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting - Kowloon, Hong Kong, China
Duration: 2005 Oct 22005 Oct 6

Publication series

NameConference Record - IAS Annual Meeting (IEEE Industry Applications Society)
Volume2
ISSN (Print)0197-2618

Other

Other2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting
CountryChina
CityKowloon, Hong Kong
Period05/10/205/10/6

Keywords

  • Atmospheric Pressure
  • Colony Counting
  • Escherichia coli
  • Low Temperature
  • Morphological analysis
  • Plasma Flow
  • Sterilization

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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  • Cite this

    Sato, T., Doi, A., Urayama, T., Nakatani, T., & Miyahara, T. (2005). Sterilization of Escherichia coli by a coaxial microwave plasma flow. In Conference Record of the 2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting (pp. 767-770). [1518416] (Conference Record - IAS Annual Meeting (IEEE Industry Applications Society); Vol. 2). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IAS.2005.1518416