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논문 기본 정보

자료유형
학술저널
저자정보
Shin, Myeong-Su (College of Veterinary Medicine, Chungbuk National University) Choi, Hyun-Jong (College of Veterinary Medicine, Chungbuk National University) Jeong, Kyeong-Hyeon (Korea Bio Science Research Institute of Organic Bio Tech Co. Ltd.) Lim, Jong-Cheol (Korea Bio Science Research Institute of Organic Bio Tech Co. Ltd.) Kim, Kyeong-Su (Korea Bio Science Research Institute of Organic Bio Tech Co. Ltd.) Lee, Wan-Kyu (College of Veterinary Medicine, Chungbuk National University)
저널정보
한국축산식품학회 한국축산식품학회지 한국축산식품학회지 제32권 제1호
발행연도
2012.1
수록면
31 - 39 (9page)

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초록· 키워드

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The purpose of this study was to isolate bacteriocin-producing bacteria with antagonistic activities against pathogens from the intestines of pigs for probiotic use. Lactobacillus sp. AP 116 possessing antimicrobial property was selected from a total of 500 isolates. The AP 116 strain showed a relatively broad spectrum of inhibitory activity against Listeria monocytogenes, Clostridium perfringens, Pediococcus dextrinicus, and Enterococcus strains using the spot-on-lawn method. Bacteriocin activity remained unchanged after 15 min of heat treatment at $121^{\circ}C$ and exposure to organic solvents; however, it diminished after treatment with proteolytic enzymes. Maximum production of bacteriocin occurred at $34^{\circ}C$ when a pH of 6.0 was maintained throughout the culture during fermentation. According to a tricine SDS-PAGE analysis, the molecular weight of the bacteriocin was approximately 5 kDa. The isolate tolerated bile salts and low pH, and also induced nitric oxide (NO) in mouse peritoneal macrophages. Bacteriocin and bacteriocin-producing bacteria, such as Lactobacillus sp. AP 116, could be potential candidates for use as probiotics as an alternative to antibiotics in the pig industry.

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