| Hygiene of fish feed I. Effect of gamma radiation on the pathogenic bacteria of fish |
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Se-ra Kim1, Jong-hwan Lee1, Sung-kee Jo2, Myung-woo Byun2, Sung-ho Kim1 |
1College of Veterinary Medicine, Chonnam National University
2Food Irradiation Team, KAERI |
| 어류양식용 사료의 위생화 I. 어류유래 병원성 세균에 대한 방사선 조사의 효과 |
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김세라1, 이종환1, 조성기2, 변명우2, 김성호1 |
1전남대학교 수의학대학
2한국원자력연구소 방사선식품공학팀 |
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| Abstract |
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The gamma-radiation sensitivity of three kinds of pathogenic bacteria to fish was investigated. $D_{10}$ values (irradiation dose required to inactivate 90% of the population) of Edwardsiella tarda, Vibrio anguillarum and Streptococcus faecalis were 0.08, 0.10 and 0.44 kGy, respectively. The inactivation factors were 4.50 - 24.30 and 6.75 - 36.45 at radiation doses of 2 and 3 kGy. Raw moist pellets were inoculated with Edwardsiella tarda, Vibrio anguillarum or Streptococcus faecalis. Inoculated feed samples were packaged in air and irradiated at 5 kGy. This dose was effective in controlling the inoculated and general bacteria in fish feed. We consider gamma-radiation to be an effective method to sterilize pathogenic bacteria in fish feed. |
| Key Words:
gamma-radiation, Edwardsiella tarda, Vibrio anguillarum, Streptococcus faecalis, fish feed |
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