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http://dx.doi.org/10.13103/JFHS.2017.32.3.222

Sterilization of Food-Borne Pathogenic Bacteria by Atmospheric Pressure Dielectric Barrier Discharge Plasma  

Lee, Seung Je (Research and Development Office, Jeonbuk Institute for Food-Bioindustry)
Song, Yoon Seok (Research and Development Office, Jeonbuk Institute for Food-Bioindustry)
Park, Yu Ri (Research and Development Office, Jeonbuk Institute for Food-Bioindustry)
Ryu, Seung Min (Innovation Technology Research Division, Plasma Technology Research Center, National Fusion Research Institute)
Jeon, Hyeong Won (Innovation Technology Research Division, Plasma Technology Research Center, National Fusion Research Institute)
Eom, Sang Heum (Innovation Technology Research Division, Plasma Technology Research Center, National Fusion Research Institute)
Publication Information
Journal of Food Hygiene and Safety / v.32, no.3, 2017 , pp. 222-227 More about this Journal
Abstract
This study aimed to explore the potential for food-industry application of atmospheric pressure dielectric barrier discharge plasma (atmospheric pressure DBD plasma) as a non-thermal sterilization technology for microorganism. The effects of the key parameters such as power, oxygen ratio, exposure time and distance on Escherichia coli KCCM 21052 sterilization by the atmospheric pressure DBD plasma treatment were investigated. The experimental results revealed that increasing the power, exposure time or oxygen ratio and decreasing the exposure distance led to an improvement in the sterilization efficiency of E. coli. Furthermore, the atmospheric pressure DBD plasma (1.0 kW power, 1.0% (v/v) $O_2$, 5 min exposure time and 20 mm exposure distance) treatment was very effective for the sterilization of food-borne pathogenic bacteria. The sterilization rate of E. coli, Bacillus cereus KCCM 40935, Bacillus subtilis KCCM 12027, Bacillus thuringiensis KCCM 11429 and Bacillus atrophaeus KCCM 11314 were 72.3%, 74.6%, 88.5%, 84.7% and 91.3%, respectively.
Keywords
Atmospheric Pressure Dielectric Barrier Discharge Plasma; Non-thermal; Non-chemical; Sterilization; Food-borne Pathogenic Bacteria;
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Times Cited By KSCI : 10  (Citation Analysis)
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