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
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
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.
Received: 20 October 2003
Revised: 13 January 2004
Accepted manuscript online:
Fund: Project supported by the Natural Science Foundation of Anhui Province (Grant No 03044702).
Cite this article:
Xu Lei (徐蕾), Zhang Rui (张锐), Liu Peng (刘鹏), Ding Li-Li (丁丽莉), Zhan Ru-Juan (詹如娟) Sterilization of E. coli bacterium with an atmospheric pressure surface barrier discharge 2004 Chinese Physics 13 913
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