KSBB Journal

  • 제23권1호
  • /
  • Pages.65-69
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  • 2008
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  • 1225-7117(pISSN)
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  • 2288-8268(eISSN)
한국생물공학회 (The Korean Society for Biotechnology and Bioengineering)
권호 표지

Paenibacillus polymyxa JB115로부터 생산된 항균물질의 특성

Characteristics of the Antibacterial Substance Produced by Paenibacillus polymyxa JB115

  • 정희경 ((주)대구테크노파크 바이오산업지원센터) ;
  • 박승춘 (경북대학교 수의과대학) ;
  • 박병권 (전진바이오팜(주)) ;
  • 김상달 (영남대학교 응용미생물학과) ;
  • 남두현 (영남대학교 약학과) ;
  • 홍주헌 ((주)대구테크노파크 바이오산업지원센터)
  • 발행 : 2008.02.29
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초록

가축 질병의 제어를 위해 면역증강제인 베타글루칸 생성균으로 분리한 Paenibacillus polymyxa JB115의 배양액이 가축병원성 세균에 대한 항균성을 보임에 따라, 배양액의 동결건조 분말을 대상으로 항균물질의 특성을 조사하여 다기능 가축 사료첨가제로의 개발 가능성을 타진하였다. 그 결과, P. polymyxa JB115에서 생산된 항균물질은 E. coli, S. aureus, S. choleraesuis 및 P. aeruginosa 등 가축 병원성 세균들에 대해 살균 또는 정균 활성을 보였으며, 항균범위도 광범위하게 나타났다. 또한 이 물질은 높은 내열성과 pH 안정성을 지녀 배양액의 제형화에도 적합하였으며, 인공 담즙산 및 인공 위액에서도 안정하여 사료첨가제로 투여시 가축의 장내 병원세균에 대해서 항균 활성을 충분히 나타낼 수 있을 것으로 판단되었다. 상기의 결과로부터 P. polymyxa JB115의 배양액은 베타글루칸 이외에도 가축 병원성 세균에 대한 항균물질을 지니고 있어서, 다기능 사료첨가제로 개발 가능함을 확인하였다.

The culture broth of a ${\beta}$-glucan-producing bacterium, Paenibacillus polymyxa JB115, was confirmed to show the antibiosis against pathogenic bacteria of livestock disease. The antibacterial substance produced by P. polymyxa JB115 exhibited strong bactericidal or bacteriostatic effect on the growth of livestock pathogenic bacteria including Staphylococcus aureus, Salmonella choleraesuis, Escherichia coli and Pseudomonas aeruginosa. This antibacterial substance also showed high stabilities in broad pH range (pH 3-11) and in broad temperature range $(40-121^{\circ}C)$, which is good enough to apply spray-dry method for the formulation of culture broth. It was also found that the antibacterial substance was very stable in artificial gastric fluid and bile acid, which implies the anticipated antibacterial activity against gastrointestinal bacteria harmful for livestocks. In conclusion, the culture broth of P. polymyxa JB115 can be developed as a multifuctional feed additive containing immune-enhancing ${\beta}$-glucan as well as antibacterial agent against livestock pathogenic bacteria.

키워드

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