Sterilization of Escherichia coli by a coaxial microwave plasma flow

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

doi:10.1109/IAS.2005.1518416

Sterilization of Escherichia coli by a coaxial microwave plasma flow

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

IFS - Nanoscale Flow Research Division

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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 language	English
Title of host publication	Conference Record of the 2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	767-770
Number of pages	4
ISBN (Print)	0780392086, 0780392086, 9780780392083
DOIs	https://doi.org/10.1109/IAS.2005.1518416
Publication status	Published - 2005
Event	2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting - Kowloon, Hong Kong, China Duration: 2005 Oct 2 → 2005 Oct 6

Publication series

Name	Conference Record - IAS Annual Meeting (IEEE Industry Applications Society)
Volume	2
ISSN (Print)	0197-2618

Conference

Conference	2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting
Country/Territory	China
City	Kowloon, Hong Kong
Period	05/10/2 → 05/10/6

Keywords

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

Access to Document

10.1109/IAS.2005.1518416

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). Article 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

Sato, Takehiko ; Doi, Akiko ; Urayama, Takuya et al. / Sterilization of Escherichia coli by a coaxial microwave plasma flow. Conference Record of the 2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting. Institute of Electrical and Electronics Engineers Inc., 2005. pp. 767-770 (Conference Record - IAS Annual Meeting (IEEE Industry Applications Society)).

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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.",

keywords = "Atmospheric Pressure, Colony Counting, Escherichia coli, Low Temperature, Morphological analysis, Plasma Flow, Sterilization",

author = "Takehiko Sato and Akiko Doi and Takuya Urayama and Tatsuyuki Nakatani and Takashi Miyahara",

year = "2005",

doi = "10.1109/IAS.2005.1518416",

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series = "Conference Record - IAS Annual Meeting (IEEE Industry Applications Society)",

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pages = "767--770",

booktitle = "Conference Record of the 2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting",

address = "United States",

note = "2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting ; Conference date: 02-10-2005 Through 06-10-2005",

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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., 1518416, Conference Record - IAS Annual Meeting (IEEE Industry Applications Society), vol. 2, Institute of Electrical and Electronics Engineers Inc., pp. 767-770, 2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting, Kowloon, Hong Kong, China, 05/10/2. https://doi.org/10.1109/IAS.2005.1518416

Sterilization of Escherichia coli by a coaxial microwave plasma flow. / Sato, Takehiko; Doi, Akiko; Urayama, Takuya et al.
Conference Record of the 2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting. Institute of Electrical and Electronics Engineers Inc., 2005. p. 767-770 1518416 (Conference Record - IAS Annual Meeting (IEEE Industry Applications Society); Vol. 2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - Sterilization of Escherichia coli by a coaxial microwave plasma flow

AU - Sato, Takehiko

AU - Doi, Akiko

AU - Urayama, Takuya

AU - Nakatani, Tatsuyuki

AU - Miyahara, Takashi

PY - 2005

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N2 - 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.

AB - 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.

KW - Atmospheric Pressure

KW - Colony Counting

KW - Escherichia coli

KW - Low Temperature

KW - Morphological analysis

KW - Plasma Flow

KW - Sterilization

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

Sterilization of Escherichia coli by a coaxial microwave plasma flow

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