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KMID : 1134820100390081126
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Journal of the Korean Society of Food Science and Nutrition
2010 Volume.39 No. 8 p.1126 ~ p.1131
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Antiobesity Effect of the Bacillus subtilis KC-3 Fermented Soymilk in 3T3-L1 Adipocytes
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Kim Ji-Young
Jeong Eun-Jung
Moon Suk-Hee
Park Kun-Young
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Abstract
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The antiobesity effect of soymilks fermented with Bacillus subtilis KC-3 (KCCM 42923) from cheonggukjang was compared with other sources of B. subtilis KCCM 11316 and B. subtilis MYCO. The antiobesity effect was investigated by measuring the release of leptin, Oil red O staining, glycerol secretions and adipogenic transcription factor by reverse transcription-polymerase chain reaction (RT-PCR) in the 3T3-L1 adipocytes. Fermented soymilk with B. subtilis KC-3 (F-KC) led to decrease levels of leptin secretion and increase levels of glycerol secretion in the cells. In addition, F-KC reduced contents of Oil red O dye in the 3T3-L1 adipocytes. Also, mRNA expression levels of both SREBP-1c (sterol regulatory element-binding protein 1-c) and PPAR-γ (peroxisome proliferator-activated receptor-γ), which are adipogenic transcription factor, in cells treated with F-KC were markedly down regulated. These results demonstrate that the Bacillus subtillis fermented soymilk (F-KC) decreased lipid content in 3T3-L1 adipocytes by inhibiting lipogenesis. All B. subtilis fermented soymilks had shown antiobesity activities, however, F-KC exhibited the strongest antiobesity effect in the 3T3-L1 adipocytes. Our study suggests that especially F-KC increased the potential of antiobesity effects.
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KEYWORD
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fermented soymilk, Bacillus subtilis, antiobesity, 3T3-L1
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