Selective sterilization of Vibro parahaemolyticus from a bacterial mixture by low-amperage electric current.
The objective of this study was to investigate the possibility of using low-amperage electrical treatment (LAET) as a selective bacteriocide. Mixtures containing Escherichia coli, Staphylococcus aureus, and Vibrio parahaemolyticus were treated with different electric current intensities and for different times. The results showed that at 263 mA, treating bacteria for 100 ms eliminated all V. parahaemolyticus colonies. Although LAET reduced the populations of the three microorganisms, V. parahaemolyticus was more injured by LAET than S. aureus and E. coli when treated at the same processing conditions.
Jin
Soo Chang
SC
Department of Medical Engineering, Yonsei University College of Medicine, Seoul 120-752, Korea.
Yoo
Hyunsuk
H
Woo
Yeon I
YI
Lee
Mi Hee
MH
Vagaska
Barbora
B
Kim
Jung-Sung
JS
Uzawa
Masakazu
M
Park
Jong-Chul
JC
D015169:Colony Count, Microbial; D004560:Electricity; D004926:Escherichia coli / Q000502:physiology / Q000648:ultrastructure; D019649:Food Industry; D008855:Microscopy, Electron, Scanning; D013211:Staphylococcus aureus / Q000502:physiology / Q000648:ultrastructure; D013242:Sterilization / Q000379:methods*; D013997:Time Factors; D014736:Vibrio parahaemolyticus / Q000502:physiology* / Q000648:ultrastructure