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Probiotic properties of Lactobacillus and Bifidobacterium strains isolated from porcine gastrointestinal tract

  • 2007-04
  • Applied Microbiology and Biotechnology 74(5)
    • P. Kim
    • M. Jung
    • Young-Hyo Chang
    • Saehun Kim
    • Seong-Jae Kim
    • Yong-Ha Park

Abstract

One strain of Lactobacillus salivarius, two strains of Lactobacillus reuteri and Lactobacillus amylovorus, and two strains of Bifidobacterium thermacidophilum with antagonistic effect against Clostridium perfringens were isolated from porcine gastrointestinal tract. Isolates were assayed for their ability to survive in synthetic gastric juice at pH 2.5 and were examined for their ability to grow on agar plate containing porcine bile extract. There was a large variation in the survival of the isolates in gastric juice and growth in the medium containing 0.3% (w/v) bile. L. salivarius G11 and L. amylovorus S6 adhered to the HT-29 epithelial cell line. Cell-free supernatant of L. amylovorus S6 showed higher antagonistic activity as effective as the antibiotics such as neomycin, chlortetracycline, and oxytetracycline against bacterial pathogens including C. perfringens, Salmonella typhimurium, Staphylococcus aureus, Vibrio cholerae, Edwardsiella tarda, and Aeromonas salmonicida subsp. salmonicida.

Research Insights

SupplementHealth OutcomeEffect TypeEffect Size
Lactobacillus amylovorusReduced Potential Pathogenic BacteriaBeneficial
Large
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