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KMID : 1007520080170010191
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Food Science and Biotechnology
2008 Volume.17 No. 1 p.191 ~ p.194
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Prophylactic Uses of Probiotics as a Potential Alternative to Antimicrobials in Food Animals
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Lee Hyeon-Yong
Xu Hua
Lee Hak-Ju
Lim Tae-Il
Choi Young-Beom
Ko Jeong-Rim
Ahn Ju-Hee
Mustapha Azlin
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Abstract
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The antagonistic activity of probiotic strains (Bifidobacterium animalis BB-12, Bifidobacterium bifidum A, Bifidobacterium longum B6, Lactobacillus acidophilus ADH, Lactobacillus paracasei ATCC 25598, and Lactobacillus rhamnosus GG) against nalidixic acid resistant (NAR) Escherichia coli O157:H7 MF1847, E. coli O157:H7 H2439, E. coli O157:H7 ATCC 43894, and E. coli O157:H7 C7927 was investigated using the agar-overlay, well diffusion, and broth culture tests. L. paracasei ATCC 25598 was the most effective probiotic strain in terms of in vitro antagonistic activity against NAR E. coli O157:H7, followed by L. rhamnosus GG, B. longum B6, and L. acidophilus ADH. The use of selected probiotic strains could be an effective pre-harvest intervention strategy to reduce the risk of NAR E. coli O157:H7 by maintaining a balanced microflora in animals and might provide many potential benefits in lieu of using antimicrobials.
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KEYWORD
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probiotic strain, antagonistic activity, Bifidobacterium, Lactobacillus, nalidixic acid
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