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KMID : 1134820120410111632
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Journal of the Korean Society of Food Science and Nutrition
2012 Volume.41 No. 11 p.1632 ~ p.1638
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Effects of Combined Treatment of Aqueous Chlorine Dioxide and UV-C or Electron Beam Irradiation on Microbial Growth and Quality in Chicon during Storage
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Kang Ji-Hoon
Park Ji-Yong
Oh Deog-Hwan
Song Kyung-Bin
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Abstract
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The effects of combined treatment of aqueous ClO2 and UV-C or electron beam irradiation on microbial growth and quality in chicon during storage at 4oC were investigated. Samples were treated separately with 50 ppm of ClO2, 5 kJ/m2 of UV-C, 2, 5, 7, and 10 kGy of electron beam irradiation, as well as a combination of ClO2 and UV-C or 2 kGy of electron beam irradiation. The populations of total aerobic bacteria as well as yeast and molds in the chicon samples were determined following each treatment. The populations of total aerobic bacteria in the chicon samples decreased by 1.49～2.92 log CFU/g following combined treatment of ClO2 and UV-C irradiation compared to the control, whereas the populations of yeast and molds decreased by 1.63～1.78 log CFU/g. On the contrary, following combined treatment of ClO2 and electron beam irradiation, the populations of total aerobic bacteria as well as yeast and molds in the chicon samples were undetectable during storage. Color measurements indicated that Hunter L*, a*, and b* values were not significantly different among the treatments during storage. These results suggest that combined treatment of ClO2 and electron beam irradiation can be useful for improving microbiological safety in chicon during storage.
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KEYWORD
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chicon, combined treatment, ClO2, UV-C, electron beam irradiation
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