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KMID : 1156220050310020127
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Journal of Environmental Health Sciences
2005 Volume.31 No. 2 p.127 ~ p.133
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The Effects of Lactic Acid Bacteria on the Growth and Aflatoxin B₁ Production of Aspergillus parasiticus
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Lee Kyung-Min
Kim Jong-Gyu
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Abstract
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This study was performed to investigate the competitive effect of Leuconostoc mesenteroides and Lactobacillus plantarum on the growth and aflatoxin B1 production of Aspergillus parasiticus. Leu. mesenteroides and Lac. plantarum were grown with A. parasiticus in a modified APT broth at 28oC for 9 days. It was observed that the growth of A. parasiticus got lower when the two bacteria were inoculated simultaneously than when the mold grew alone. The pH of mixed culture of Leu. mesenteroides and Lac. plantarum showed significantly lower value than the pH of the pure culture of A. parasiticus (p<0.05). The acidity of the mixed culture group significantly increased compared with the control group (A. parasiticus alone group) (p<0.05). The aflatoxin B1 production was significantly decreased in the mixed culture group than in the A. parasiticus alone group(p<0.05). Leu. mesenteroides showed the more efficient effect than Lac. plantarum. These results indicate that the two lactic acid bacteria have inhibitory effect on the growth and aflatoxin B1 production of Aspergillus parasiticus.
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