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http://dx.doi.org/10.3746/jkfn.2002.31.4.589

Distribution of Microflora in Powdered Raw Grains and Vegetables and Improvement of Hygienic Quality by Gamma Irradiation  

Kim, Dong-Ho (Team for Radiation Food Science and Biotechnology, Korea Atomic Energy Research Institute)
Song, Hyun-Pa (Team for Radiation Food Science and Biotechnology, Korea Atomic Energy Research Institute)
Yook, Hong-Sun (Dept. of Food Nutrition, Chungnam National University)
Chung, Young-Jin (Dept. of Food Nutrition, Chungnam National University)
Kim, Yeung-Ji (Dept. of Food Science and Nutrition, Yeungnam College of Science and Technology)
Byun, Myung-Woo (Team for Radiation Food Science and Biotechnology, Korea Atomic Energy Research Institute)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.31, no.4, 2002 , pp. 589-593 More about this Journal
Abstract
Improvement of hygienic quality of powdered raw grains and vegetables by gamma irradiation was investigated. Five products of powdered raw grains and vegetables were collected in a local market and analysed. The total viable cell counts of Bacillus were 10$^4$~10$^{7}$ cfu/g, filamentous fungi l0$^2$~10$^3$cfu/g, coliform 10$^1$~10$^4$cfu/g, enteric bacteria on SS agar plate 10$^1$~10$^3$cfu/g. Coliform, enteric bacteria on SS agar plate and filamentous fungi were eliminated by 3 kGy of gamma irradiation. The D values of coliform, enteric bacteria on SS agar plate, Bacillus, and filamentous fungi were 0.68~0.80 kGy, 0.59~0.74 kGy, 1.84~2.18 kGy and 0.36~0.57 kGy, respectively. It was considered that optimal irradiation dose for radappertization was about 25 kGy, while 3~5 kGy of gamma irradiation was effective for radicidation.
Keywords
powdered raw grains and vegetables; gamma irradiation; hygienic quality;
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