Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Isolation of Microorganisms from Red Pepper Powder and their Radiosensitivity

고추가루중 미생물(微生物)의 분리(分離) 및 방사선 감수성(感受性)

  • Choi, Eon-Ho (Environmental Chemistry Laboratory, Korea Atomic Energy Research Institute) ;
  • Kim, Young-Bae (Environmental Chemistry Laboratory, Korea Atomic Energy Research Institute) ;
  • Lee, Su-Rae (Environmental Chemistry Laboratory, Korea Atomic Energy Research Institute)
  • 최언호 (한국원자력연구소 환경화학연구실) ;
  • 김영배 (한국원자력연구소 환경화학연구실) ;
  • 이서래 (한국원자력연구소 환경화학연구실)
  • Published : 1977.09.28
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Abstract

From samples of red pepper powder sold in Korea were isolated and identified 13 species of molds (Aspergillus amstelodami, Asp. chevalieri, Asp. clavatus, Asp. flavus, Asp. janus var. effusus, Asp. oryzae, Asp. oryzae var. brevis, Asp. repens, Asp. sydowi, Asp. thomii, Asp. tubingensis, Penicillium thomii, Scopulariopsis brevicaulis) and 5 species of bacteria (Bacillus pumilus, Bac. subtilis, Micrococcus luteus, M. varians, Staphylococcus aureus). Radiosensitivity of these microorganisms was examined to give $D_{10}$ values of $14{\sim}41\;krad$ for molds, $11{\sim}24\;krad$ for bacterial vegetative cells and $190{\sim}250\;krad$ for bacterial spores. The red pepper powder was contaminated with $2{\sim}3{\times}10^2$ mold counts/g and $3{\sim}6{\times}10^7$ bacterial counts/g, which would be sufficiently destroyed by irradiating 200 krad ${\gamma}-rays$.

시판(市販) 고추가루에서 13종의 곰팡이(Aspergillus amstelodami, Asp. clavatus, Asp. flavus, Asp. chevalieri, Asp. janus var. effusus, Asp. oryzae, Asp, oryzae var. brevis, Asp. repens, Asp. sydowi, Asp. thomii, Asp. tubingensis, Penicillium thomii, Scopulariopsis brevicaulis와 5종의 세균(Bacillus pumilus, Bac. subtilis, Micrococcus luteus, M. varians, Staphylococcus aureus)이 분리(分離), 동정(同定)되었다. 이들 미생물의 방사선 감수성(感受性)($D_{10}$ 값)을 보면 곰팡이는 $14{\sim}41\;krad$, 세균은 영양세포(營養細胞)가 $11{\sim}24\;krad$, 포자(胞子)가 $190{\sim}250\;krad$이었다. 햇 고추가루 중의 곰팡이 수는 1 g당 $2{\sim}3{\times}10^2$개, 세균은 $3{\sim}6{\times}10^7$개 이므로 200 krad의 방사선 조사(照射)로서 세균의 영양세포와 곰팡이 포자는 충분히 사멸(死滅)시킬 수 있다고 생각된다.

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