Food Science and Biotechnology

  • 제17권4호
  • /
  • Pages.723-727
  • /
  • 2008
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  • 1226-7708(pISSN)
  • /
  • 2092-6456(eISSN)
한국식품과학회 (Korean Society of Food Science and Technology)
권호 표지

Effect of Gamma Irradiation on the Growth and Patulin Production of Penicillium griseofulvum in an Apple Model System

  • Yun, Hye-Jeong (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Lim, Sang-Yong (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Yang, Su-Hyung (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Lee, Woo-Yiel (Department of Pharmaceutical Engineering, Konyang University) ;
  • Kwon, Joong-Ho (Department of Food Science and Technology, Kyungpook National University) ;
  • Lim, Byung-Lak (H&BT KOREA Co., Ltd.) ;
  • Kim, Dong-Ho (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute)
  • 발행 : 2008.08.31
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초록

The effect of gamma irradiation on the prevention of breeding a patulin-producing mold and reducing patulin content was evaluated in an apple model system. Penicillium griseofulvum, a patulin-producing standard mold strain was artificially inoculated into apples and a gamma irradiation was performed. The $D_{10}$-values of the conidia of P. griseofulvum in an aqueous suspension and the apple model system were calculated at 0.28 and 0.48 kGy, respectively. The viable cell counts of the inoculated conidia in the apples showed 2 decimal point reductions at a dose of 1 kGy. Breeding and growth of the survived conidia was prevented during 10 weeks of post-irradiation storage period, especially at $4^{\circ}C$. The concentration of patulin in the non-irradiated apples was gradually increased and reached about 950 ppm at $25^{\circ}C$ and 410 ppm at $4^{\circ}C$, but the production of patulin was not observed during storage after 1 kGy of gamma irradiation.

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