Journal of Radiation Industry (방사선산업학회지)

Korean Society of Radiation Industry (한국방사선산업학회)
권호 표지

Effect of Gamma Irradiation on Microbial Populations in the Dried Raw Materials and Saengsik Powder

감마선 조사에 따른 원료분말 및 생식의 미생물 제어 효과

  • Choi, Soo-Jeong (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Park, Jae-Nam (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Song, Beom-Seok (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Yoon, Young-Min (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Han, In-Jun (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Park, Jong-Heum (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Kim, Jae-Kyung (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Byun, Eui-Baek (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Lee, Ju-Woon (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Hong, Seong-Gil (Erom R&D Center) ;
  • Yook, Hong-Sun (Department of Food and Nutrition, Chungnam National University) ;
  • Kim, Jae-Hun (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute)
  • 최수정 (한국원자력연구원 첨단방사선연구소) ;
  • 박재남 (한국원자력연구원 첨단방사선연구소) ;
  • 송범석 (한국원자력연구원 첨단방사선연구소) ;
  • 윤영민 (한국원자력연구원 첨단방사선연구소) ;
  • 한인준 (한국원자력연구원 첨단방사선연구소) ;
  • 박종흠 (한국원자력연구원 첨단방사선연구소) ;
  • 김재경 (한국원자력연구원 첨단방사선연구소) ;
  • 변의백 (한국원자력연구원 첨단방사선연구소) ;
  • 이주운 (한국원자력연구원 첨단방사선연구소) ;
  • 홍성길 ((주)이롬 생명과학연구원) ;
  • 육홍선 (충남대학교 식품영양학과) ;
  • 김재훈 (한국원자력연구원 첨단방사선연구소)
  • Received : 2013.11.18
  • Accepted : 2013.11.25
  • Published : 2013.11.30

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Abstract

This study was conducted to evaluate the effect of gamma irradiation on the microbial populations of dried raw materials (9 products) and Saengsik powder. The samples were gammairradiated at doses of 2, 4, 6 and 8 kGy and the microbiological populations were evaluated. The total numbers of bacteria and Bacillus cereus in non-irradiated dried-raw materials for Saengsik powder was 1.3~3.4 and $1.7{\sim}2.4log\;CFU\;g^{-1}$. However, gamma irradiation reduced the microbiological populations in all samples, and Saengsik powder were sterilized at more than 6 kGy. Moreover, Clostridium perfringens were not observed in all samples within detection limit (<$1log\;CFU\;g^{-1}$). Therefore, the results of this study suggest that gamma irradiation at 6 kGy is sufficient to sterilize Saengsik powder, and thus, irradiated Saengsik powder at 6 kGy fulfills the microbiological requirements for sterilized food.

Keywords

Acknowledgement

Supported by : 한국연구재단