In vivo Antagonistic Effect of Lactobacillus helveticus CU 631 against Salmonella enteritidis KU101 infection

  • Bae, Jin-Seong (Department of Animal Science and technology, Chung-Ang University) ;
  • Byun, Jung-Ryul (Department of Animal Science and technology, Chung-Ang University) ;
  • Yoon, Yung-Ho (Department of Animal Science and technology, Chung-Ang University)
  • Received : 2002.06.18
  • Accepted : 2002.11.21
  • Published : 2003.03.01


In vivo antagonistic effect of Lactobacillus helveticus CU 631 and Lactobacillus spp. against typical enteritis causing pathogen Salmonella enteritidis KU 101 have been determined, which showed an increase in survival rate and the decline in viable cell numbers of pathogen in liver and spleen at sacrifice. A signifcant difference in the antagonistic effect against KU 101 were observed, which was species and/or strain dependent of Lactobacillus (p<0.01), the survival rate of the mice in the Salmonella infection by feeding L. helveticus CU 631 has been shown to be 157%, whereas those of L. rhamnosus GG ATCC 53103, L. acidophilus ATCC 4356, L. johnsonii C-4 were 137%, 132%, 119% respectively on the basis of lactobacilli non-associated control KU101 fed mice to be 100%. Viable cells of S. enteritidis KU101 in the liver and in the spleen at sacrifice were decreased in Lactobacillus spp. fed group with no significant difference. The higher level of total secretory IgA concentration in the intestinal fluid of lactobacilli fed mice than control mice have been observed. In vitro antagonistic activity of Lactobacillus spp. against KU101 have been determined, a prominent antagonistic activity of CU 631 against KU 101 were demonstrated.


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