Preventive Nutrition and Food Science

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Effect of Gamma Irradiation on the Microflora of Commercial Ready-To-Use (RTU) Salads during Cold Storage

  • Kim, Jang-Ho (Radiation Food Science and Biotechnology Team, Korea Atomic Energy Research Institute) ;
  • Lee, Ju-Woon (Radiation Food Science and Biotechnology Team, Korea Atomic Energy Research Institute) ;
  • Lee, You-Seok (Radiation Food Science and Biotechnology Team, Korea Atomic Energy Research Institute) ;
  • Oh, Sang-Hee (Radiation Food Science and Biotechnology Team, Korea Atomic Energy Research Institute) ;
  • Byun, Myung-Woo (Radiation Food Science and Biotechnology Team, Korea Atomic Energy Research Institute)
  • Published : 2004.09.01
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Abstract

Since ready-to-use (RTU) products are not fully cooked, the shelf-life of the product is comparably short and the products are easily spoiled when contaminated with food-borne pathogens. Low-dose gamma irradiation of 0.5, 1, or 2 kGy effectively reduced the total aerobic bacterial counts in 2 Korean manufactured RTU products by 1.63 to 2.95 log CFU/g during cold storage. Irradiation at 2 kGy reduced the psychrotrophic bacterial counts in most of the samples to below the limit of detection (< log CFU/g). Irradiation at 0.5 kGy completely eliminated Escherichia coli from the commercial RTU samples.

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References

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