Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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White Rice Fermented by Clostridium butyricum IDCC 9207 as an Alternative to Antibiotic having Antibacterial and Immunostimulatory Activity

항생제 대체제로서 Clostridium butyricum IDCC 9207 백미 발효물의 항균작용과 장관 면역증진효과

  • Lee, Seung-Hun (ILDONG Research Laboratories, ILDONG Pharmaceutical Co., Ltd.) ;
  • Kim, Seong-Beom (ILDONG Research Laboratories, ILDONG Pharmaceutical Co., Ltd.) ;
  • Kang, Jae-Hoon (ILDONG Research Laboratories, ILDONG Pharmaceutical Co., Ltd.) ;
  • Kang, Dae-Jung (ILDONG Research Laboratories, ILDONG Pharmaceutical Co., Ltd.)
  • Received : 2011.06.27
  • Accepted : 2011.08.16
  • Published : 2011.08.31
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Abstract

The antagonistic activities against animal entero-pathogenic bacteria were investigated with 444 natural substances fermented by various probiotics. A white rice product fermented (FWR) by Clostridium butyricum IDCC 9207 with a high growth inhibition of Salmonella typhimurium KCTC 2054 and Escherichia coli O157:H7 was selected. Also, a FWR was shown to suppress 8 among 21 pathogenic bacteria. In a mouse model with salmonella (${\times}10^9$ CFU/mouse) infection, 5 samples (200 ${\mu}{\ell}$/mouse/day) were fed to mice (n = 25) for 18 days. A fermented white rice containing C. butyricum IDCC 9207 (FWRCb9207) among 5 samples significantly inhibited the growth of salmonella, while in the control group (PBS, tetracycline) the number of salmonella increased. And the treatment with FWRCb9207 was found to increase the secretory immunoglobulin A (sIgA) level in the feces of salmonella-infected mice. The results obtained in this study suggest that a FWRCb9207 might be utilized as a feed additive in pigs and poultry diets.

이 연구는 천연소재 probiotics 발효물을 대상으로 가축의 장내 유해세균으로 알려진 S. typhimurium KCTC 2054와 E. coli O157:H7의 생장을 억제시키는 유효 발효물을 선발하여 특성을 연구하는 데 있다. 실험 샘플 444개 중 유해 세균에 대한 항균력이 가장 우수한 것으로 C. butyricum IDCC 9207 백미 발효물(FWR)을 최종 선발하였다. C. butyricum IDCC 9207이 함유된 백미 발효물 (FWRCb9207)을 S. typhimurium KCTC 2054로 감염시킨 ICR-mice에 일정기간 투여하였을 때, salmonella의 생육이 억제됨을 확인하였으며, 장관에서 분비되는 secretory immunoglobulin A (sIgA)의 양이 증가됨을 확인하였다. FWRCb9207은 기존의 생균제 보다 빠른 정장효과를 나타낼 수 있으며, 발효물보다 생균보강을 통해 정장작용의 기간을 늘릴 수 있는 것이 장점이다. 또한 FWRCb9207의 급여를 통해 사료로부터 쉽게 감염되는 S. typhimurium, S. gallinarum, S. pullorum, S. choleraesuis ssp. choleraesuis 등의 유해세균 증식을 효과적으로 억제시키고 면역력을 증진시킴으로써 가축의 증체율을 높였다. 이러한 FWRCb9207의 synbiotic effects는 궁극적으로 기존 항생제를 대체함으로써 항생제 오남용으로 발생되는 문제점을 해소할 수 있을 것으로 기대된다.

Keywords

References

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