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KMID : 1025520000420030331
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Journal of Animal Science and Technology
2000 Volume.42 No. 3 p.331 ~ p.338
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A Study on the Growth lnhibition of Bacillus cereus by Lactobacilli
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Abstract
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The growth inhibition effect of Bacillus cereus by lactobacilli has been studied. As L. acidophilus HF 04 or L. acidophilus NCFM was co-incubated with B. cereus in skim milk, the germination and sporulation of B. cereus were inhibited without affecting the growth of L. acidophilus strains. The growth curve of lactobacilli reached stationary phase after IS hours of incubation and the number of B. cereus cells decreased drastically after 10 hours of incubation. The growth of B. cereus was not observed in the skim milk medium lower than pH 4.3. The organic acids produced by lactobacilli were confirmed to inhibit the growth of B. cereus. Acetic acid was more effective growth inhibitor of B. cereus LTDM03 in skim milk medium and thermoduric spores were not germinated after 10 hours of incubation in the skim milk medium adjusted to pH 4.63 by acetic acid.
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