Elimination of Microorganisms Contaminated in Red Ginseng Powder by Irradiation Processing

감마선 조사를 이용한 홍삼분말의 오염미생물 제거

  • Yook, Hong-Sun (Department of Food and Nutrition, Chungnam National University) ;
  • Kim, Seong-Ai (Department of Food and Nutrition, Chungnam National University) ;
  • Byun, Myung-Woo (Department of Food Irradiation, Korea Atomic Energy Research Institute) ;
  • Kwon, Joong-Ho (Department of Food Technology, Kyungpook National University)
  • Published : 1996.04.30

Abstract

Gamma irradiation was applied to red ginseng powder for improving its hygienic quality 7.5 kGy of gamma irradiation completely eliminated the microorganisms contaminated in red ginseng powder. And there was no growth of microorganisms after six months of storage at room temperature. The molds isolated from red ginseng powder were identified as Pen. commune, Asp. niger, Asp. versicolor and Asp. Unguis, the conidia of which showed the decimal reduction dose ($D_{10}$ value) of 0.37-0.50 kGy, 0.24-0.31 kGy, 0.25-0.36 kGy and 0.28-0.41 kGy and inactivation factor of 5.0-6.5, 7.4-9.3, 6.5-9.1 and 6.1-8.4, respectively The radiosensitivity of identified molds' conidia decreased in medium containing red ginseng extract.

Keywords

red ginseng powder;gamma irradiation;microorganisms