中国物理B ›› 2004, Vol. 13 ›› Issue (6): 913-917.doi: 10.1088/1009-1963/13/6/022

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Sterilization of E. coli bacterium with an atmospheric pressure surface barrier discharge

丁丽莉1, 徐蕾2, 张锐2, 刘鹏2, 詹如娟2   

  1. (1)Department of Life Science, University of Science and Technology of China, Hefei 230026, China; (2)Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:2003-10-20 修回日期:2004-01-13 出版日期:2004-07-05 发布日期:2005-07-05
  • 基金资助:
    Project supported by the Natural Science Foundation of Anhui Province (Grant No 03044702).

Sterilization of E. coli bacterium with an atmospheric pressure surface barrier discharge

Xu Lei (徐蕾)a, Zhang Rui (张锐)a, Liu Peng (刘鹏)a, Ding Li-Li (丁丽莉)b, Zhan Ru-Juan (詹如娟)a   

  1. a Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China; b Department of Life Science, University of Science and Technology of China, Hefei 230026, China
  • Received:2003-10-20 Revised:2004-01-13 Online:2004-07-05 Published:2005-07-05
  • Supported by:
    Project supported by the Natural Science Foundation of Anhui Province (Grant No 03044702).

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摘要： The atmospheric pressure surface barrier discharge (APSBD) in air has been used in killing Escherichia coli (E. coli). There is almost no bacterial colony in the sample after treatment by discharge plasma for 2 min. A diagnostic technique based on mass spectrum has been applied to the discharge gas and the mechanism of killing is discussed. Ozone and monatomic oxide are considered to be the major antimicrobial active species. There is almost no harmful by-product. The experiment proves that APSBD plasma is a very simple, effective and innocuous tool for sterilization.

关键词: surface barrier discharge, non-equilibrium plasma, sterilization

Abstract: The atmospheric pressure surface barrier discharge (APSBD) in air has been used in killing Escherichia coli (E. coli). There is almost no bacterial colony in the sample after treatment by discharge plasma for 2 min. A diagnostic technique based on mass spectrum has been applied to the discharge gas and the mechanism of killing is discussed. Ozone and monatomic oxide are considered to be the major antimicrobial active species. There is almost no harmful by-product. The experiment proves that APSBD plasma is a very simple, effective and innocuous tool for sterilization.

Key words: surface barrier discharge, non-equilibrium plasma, sterilization

中图分类号:  (Biophysical techniques (research methods))

  • 87.80.-y
52.80.-s (Electric discharges) 52.77.-j (Plasma applications)