Sterilization effects of atmospheric cold plasma brush

Journal Article · Mon Jan 02 00:00:00 EST 2006 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2161807· OSTI ID:20778530

Yu, Q S; Huang, C; Hsieh, F -H; Huff, H; Yixiang, Duan ^[1]

---

1. Center for Surface Science and Plasma Technology, and Department of Chemical Engineering, University of Missouri-Columbia, Columbia, Missouri 65211 (United States)

This study investigated the sterilization effects of a brush-shaped plasma created at one atmospheric pressure. A population of 1.0x10{sup 4}-1.0x10{sup 5} Escherichia coli or Micrococcus luteus bacteria was seeded in filter paper media and then subjected to Ar and/or Ar+O{sub 2} plasmas. A complete kill of the Micrococcus luteus required about 3 min argon plasma exposures. With oxygen addition into the argon plasma gas streams, a complete kill of the bacteria needed only less than 1 min plasma exposure for Micrococcus luteus and about 2 min exposure for Escherichia coli. The plasma treatment effects on the different bacteria cell structures were examined using scanning electron microscopy.

• OSTI ID: 20778530
• Journal Information: Applied Physics Letters, Vol. 88, Issue 1; Other Information: DOI: 10.1063/1.2161807; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ARGON
ATMOSPHERIC PRESSURE
COLD PLASMA
ESCHERICHIA COLI
MICROCOCCUS LUTEUS
OXYGEN ADDITIONS
POPULATIONS
SCANNING ELECTRON MICROSCOPY
STERILIZATION