Isolation of a Bacterium with Potent Antibacterial Activity against Swine Atrophic Rhinitis Bacteria and Antibacterial Activities

돼지 위축성 비염균에 대한 항균성을 나타내는 세균의 분리 및 항균활성

  • 이종수 (배재대학교 유전공학과·생물의약연구센타) ;
  • 강석휘 (중앙가축전염병연구소 부설 파천연구소) ;
  • 서승보 (배재대학교 유전공학과·생물의약연구센타) ;
  • 김재호 (배재대학교 유전공학과·생물의약연구센타)
  • Published : 2002.06.01

Abstract

A bacterium(Y-5) which has potent antibacterial activity against swine atrophic rhinitis bacteria (Bordetella bronchiseptica, Pasteurella multocida) was isolated from soil and identified as a strain of Bacillus sp. Y-5 upon investigation of the morphological and physiological characteristics. The culture broth obtained from incubation of the Y-5 strain at $30^{\circ}C$ for 21 h in tryptose-bouillon agar medium (pH 6.0) showed active antibacterial activity against Bordetella bronchiseptica and the culture broth that of $30^{\circ}C$, pH 6.5, 18 h showed active antibacterial activity against Pasteurella multocida.

돼지의 만성 호흡기 질환인 위축성 비염을 방제할 수 있는 생물공학적 방법을 개발하고자 먼저 자연계에서 돼지 위축성 비염의 원인균에 대한 항균활성이 강한 세균을 분리하여 동정하고 몇 가지 항균특성을 조사하였다. 자연계에서 항균성 물질 생산 균주로 분리한 1080주의 세균 가운데 돼지 위축성 비염의 원인균인 Bordetella bronchiseptica 와 Pasteurella multocida에 대하여 강한 항균활성을 갖는 Y-5 균주를 최종 선정한 후 동정한 결과 Bacillus sp. Y-5로 추정되었다. Y-5 균주를 pH 6.0으로 조절된 육즙배지에서 $30^{\circ}C$, 21시간 배양하였을 때 Bordetella bronchiseptica에 대하여 가장 높은 항균활성을 보였고, Y-5 균주를 $30^{\circ}C$, pH 6.5에서 18시간 배양 하였을 때 Pasteurella multocida에 대하여 가장 강한 항균활성을 보였다.

Keywords

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