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LWT- Food science and technology v.97, 2018년, pp.94 - 99  

Evaluation of probiotic Bacillus subtilis P229 isolated from cheonggukjang and its application in soybean fermentation

Jeon, Hye-Lin (Department of Food Science and Biotechnology of Animal Resources, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea ) ; Yang, Seo-Jin (Department of Food Science and Biotechnology of Animal Resources, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea ) ; Son, Sung-Ho (Department of Food Science and Biotechnology of Animal Resources, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea ) ; Kim, Won-Suck (College of Medical and Life Sciences, Silla University, Busan 46958, Republic of Korea ) ; Lee, Na-Kyoung (Department of Food Science and Biotechnology of Animal Resources, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea ) ; Paik, Hyun-Dong (Department of Food Science and Biotechnology of Animal Resources, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea ) ;
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    Abstract Bacillus subtilis P229 was isolated from cheonggukjang , a Korean soybean fermented food, and its probiotic properties and utility in starter cultures for soybean fermentation were investigated. B. subtilis P229 spores were stable when exposed to simulated gastric and bile conditions. B. subtilis P229 vegetative cells did not produce β-glucuronidase, were sufficiently susceptible to antibiotics, and adhered strongly to human intestinal epithelial cells. Moreover, this strain did not induce hemolysis or carry enterotoxin genes. B. subtilis P229 showed high levels of autoaggregation, and its coaggregation with pathogens depended on the species involved. It did not produce hazardous biogenic amines from histidine and ornithine. B. subtilis P229-fermented soybean extracts were prepared using 70% ethanol. Fermented-soybean extracts demonstrated greater antioxidant effects and total phenolic content than unfermented soybean extracts. These results suggest that B. subtilis P229 isolated from cheonggukjang shows potential as a probiotic and as a component of starter cultures for fermented soybean foods. Highlights Bacillus subtilis P229 was isolated from cheonggukjang. B. subtilis P229 spores were stable in gastric conditions. B. subtilis P229 did not induce hemolysis or carry enterotoxin genes. Soybean extracts fermented by B. subtilis P229 showed antioxidant effects. B. subtilis P229 could be used as potential probiotics and starter culture.


  • 주제어

    Probiotics .   Bacillus subtilis .   Spore .   Cheonggukjang .   Antioxidant activity.  

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