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http://dx.doi.org/10.3839/jabc.2008.016

Inactivation of Agrobacterium tumefaciens Inoculated on Fresh Radix Ginseng by Electron Beam Irradiation and Aqueous Chlorine Dioxide Treatment  

Chun, Ho-Hyun (Department of Food Science and Technology, Chungnam National University)
Kim, Ju-Yeon (Department of Food Science and Technology, Chungnam National University)
Song, Kyung-Bin (Department of Food Science and Technology, Chungnam National University)
Publication Information
Journal of Applied Biological Chemistry / v.51, no.3, 2008 , pp. 117-122 More about this Journal
Abstract
Inactivation of Agrobacterium tumefaciens was evaluated on the inoculated fresh Radix Ginseng by electron beam irradiation or aqueous chlorine dioxide ($ClO_2$) treatment. Two groups of fresh ginsengs were prepared and inoculated with A. tumefaciens. One group was then irradiated at 0, 2, and 4 kGy using an electron beam accelerator, and the other group was treated with 0, 50, and 100 ppm of aqueous $ClO_2$. Microbiological data indicated that populations of A. tumefaciens significantly decreased with increasing irradiation dose or aqueous $ClO_2$ concentration. In particular, A. tumefaciens was eliminated by irradiation at 4 kGy, and 100 ppm $ClO_2$ treatment reduced the populations of A. tumefaciens by 1.44 log CFU/g. These results suggest that electron beam irradiation or aqueous $ClO_2$ treatment can be useful in improving the microbial safety of fresh ginsengs during storage.
Keywords
Agrobacterium tumefaciens; aqueous chlorine dioxide; electron beam irradiation; microbial growth;
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