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Antagonistic inhibitory effects of probiotics against pathogenic microorganisms in vitro

Probiotics의 병원성미생물에 대한 길항적 억제효과

  • Yuk, Young Sam (Department of Biomedical Laboratory Science, Dankook University) ;
  • Lee, Young ki (Department of Biomedical Laboratory Science, Dankook University) ;
  • Kim, Ga-Yeon (Department of Dental Hygiene, Dankook University)
  • 육영삼 (단국대학교 임상병리학과) ;
  • 이영기 (단국대학교 임상병리학과) ;
  • 김가연 (단국대학교 치위생학과)
  • Received : 2019.10.15
  • Accepted : 2019.12.06
  • Published : 2019.12.31

Abstract

To investigate the antagonistic inhibitory effects in a mixed culture between probiotics and various pathogenic microorganisms, 140 probiotics were identified using a 16 rRNA sequencing phylogenetic analysis method, and various probiotics strains were isolated from Korean kimchi from January to December 2016. The antagonistic inhibition test of a mixed culture of four probiotics (Enterococcus faecalis, Lactobacillus plantarum, Lactobacillus rhamnosus, and Lactobacillus reuteri) with excellent antimicrobial activity and six pathogenic microorganisms (Candida albicans, Salmonella Enteritidis, E. coli O157:H7, Shigella flexneri, Staphylococcus aureus, and Pseudomonas aeruginosa)showed that the growth of most probiotics strains increased normally after culture, but growth was inhibited almost completely in most pathogenic microorganisms, except for S. Enteritidis. This antagonistic inhibitory effect in vitro was attributed to the low pH of the lactic acid and organic acid produced during fermentation. As a result, four probiotics strains isolated from Korean Kimchi are very likely to be developed as therapeutic agents for female yeast infections and colon and skin care. In the future, these therapeutic agents will help improve public health related to probiotics.

Probiotics와 다양한 병원성 미생물간의 혼합배양에서의 길항적 억제효과를 조사하기 위해 2016년 1월부터 12월까지 국내 김치로부터 다양한 probiotics 균주를 분리하여 16S rRNA sequencing을 통한 계통학적 분석을 통해 140주의 프로바이오틱스를 동정하였다. 이중 항균력이 우수한 probiotics 4종(Enterococcus faecalis, Lactobacillus plantarum, Lactobacillus rhamnosus, and Lactobacillus reuteri )과 병원성 미생물 6종 (Candida albicans, Salmonella Enteritidis, E. coli O157:H7, Shigella flexneri, Staphylococcus aureus, and Pseudomonas aeruginosa)간의 혼합배양에서의 길항적 억제시험에서 probiotics 균주들은 대부분 배양 후에 균수가 정상적으로 크게 증가했지만 C. albicans를 포함하여 대부분의 병원성미생물들은 S. Enteritidis 를 제외하고 거의 완전하게 성장이 억제되었다. 이러한 in vitro 에서의 길항적 억제효과는 생성된 젖산과 유기산등의 낮은 pH에 의한 효과인 것으로 생각된다. 이상의 결과로 한국 김치에서 분리된 probiotics 균주 4종은 여성질염, 대장 및 피부관리 관련 치료제로써의 개발 가능성이 매우 큰 것으로 생각되며 향후 이러한 치료제는 probiotics 관련 국민건강 및 보건향상에 크게 기여할 것으로 생각된다.

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