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Article

The Efficiency of Atmospheric Dielectric Barrier Discharge Plasma against Escherichia coli and Bacillus cereus on Dried Laver (Porphyra tenera)

1
Institute of Marine Industry, Gyeongsang National University, Tongyeong 53064, Korea
2
Department of Seafood and Aquaculture Science, Gyeongsang National University, Tongyeong 53064, Korea
3
Department of Electrical and Biological Physics, Plasma Bioscience Research Center, Kwangwoon University, Seoul 01987, Korea
*
Author to whom correspondence should be addressed.
Foods 2020, 9(8), 1013; https://doi.org/10.3390/foods9081013
Received: 27 May 2020 / Revised: 10 July 2020 / Accepted: 21 July 2020 / Published: 28 July 2020
(This article belongs to the Special Issue Innovative Approaches to Improve the Safety and Quality of Seafood)
This study investigated the effects of atmospheric dielectric barrier discharge (DBD) plasma (1.1 kV, 43 kHz, 5–30 min, N2: 1.5 L/m) on the reduction of Escherichia coli and Bacillus cereus on dried laver. The reductions of E. coli and B. cereus by 5, 10, 20, and 30 min of DBD plasma were 0.56 and 0.24, 0.61 and 0.66, 0.76 and 1.24, and 1.02 and 1.38 log CFU/g, respectively. The D-value of E. coli and B. cereus was predicted as 29.80 and 20.53 min, respectively, using the Weibull model for E. coli (R2 = 0.95) and first-order kinetics for B. cereus (R2 = 0.94). After DBD plasma 5–30 min treatment, there was no change in pH (6.20–6.21) and this value was higher than the untreated dried laver (6.08). All sensory scores in DBD plasma-treated laver were determined as >6 points. The 30 min of DBD plasma is regarded as a novel intervention for the control of potential hazardous bacteria in dried laver. View Full-Text
Keywords: dried laver; DBD plasma; Escherichia coli; Bacillus cereus; quality dried laver; DBD plasma; Escherichia coli; Bacillus cereus; quality
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MDPI and ACS Style

Kim, J.Y.; Jeon, E.B.; Choi, M.-S.; Choi, E.H.; Lim, J.S.; Choi, J.; Park, S.Y. The Efficiency of Atmospheric Dielectric Barrier Discharge Plasma against Escherichia coli and Bacillus cereus on Dried Laver (Porphyra tenera). Foods 2020, 9, 1013. https://doi.org/10.3390/foods9081013

AMA Style

Kim JY, Jeon EB, Choi M-S, Choi EH, Lim JS, Choi J, Park SY. The Efficiency of Atmospheric Dielectric Barrier Discharge Plasma against Escherichia coli and Bacillus cereus on Dried Laver (Porphyra tenera). Foods. 2020; 9(8):1013. https://doi.org/10.3390/foods9081013

Chicago/Turabian Style

Kim, Ji Y., Eun B. Jeon, Man-Seok Choi, Eun H. Choi, Jun S. Lim, Jinsung Choi, and Shin Y. Park. 2020. "The Efficiency of Atmospheric Dielectric Barrier Discharge Plasma against Escherichia coli and Bacillus cereus on Dried Laver (Porphyra tenera)" Foods 9, no. 8: 1013. https://doi.org/10.3390/foods9081013

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