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Antimicrobial Agents and Chemotherapy, 05 1997, 1046-1052, Vol 41, No. 5
MH Coconnier, V Lievin, MF Bernet-Camard, S Hudault and AL Servin
The spent culture supernatant of the human Lactobacillus acidophilus strain
LB produces an antibacterial activity against a wide range of gram-negative
and gram-positive pathogens. It decreased the in vitro viability of
Staphylococcus aureus, Listeria monocytogenes, Salmonella typhimurium,
Shigella flexneri, Escherichia coli, Klebsiella pneumoniae, Bacillus
cereus, Pseudomonas aeruginosa, and Enterobacter spp. In contrast, it did
not inhibit lactobacilli and bifidobacteria. The activity was heat stable
and relatively sensitive to enzymatic treatments and developed under acidic
conditions. The antimicrobial activity was independent of lactic acid
production. Activity against S. typhimurium SL1344 infecting human cultured
intestinal Caco-2 cells was observed as it was in the conventional
C3H/He/oujco mouse model with S. typhimurium C5 infection and oral
treatment with the LB spent culture supernatant.
Copyright © 1997 by the American Society for Microbiology. All rights reserved.
Antibacterial effect of the adhering human Lactobacillus acidophilus strain LB
CJF 94.07 INSERM, UFR de Pharmacie Paris XI, Chatenay-Malabry, France.
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