title: Antilisterial Bacteriocin from Lactobacillus rhamnosus CJNU 0519 Presenting a Narrow Antimicrobial Spectrum.
abstract: A lactic acid bacterium presenting antimicrobial activity against a Lactobacillus acidophilus strain used for eradication of acid inhibition was isolated from a natural cheese. The 16S rRNA gene sequence of the isolate best matched with a strain of L. rhamnosus and was designated L. rhamnosus CJNU 0519. The antimicrobial activity of the partially purified bacteriocin of CJNU 0519 was abolished when treated with a protease, indicating the protein nature of the bacteriocin. The partially purified bacteriocin (rhamnocin 519) displayed a narrow antimicrobial activity against L. acidophilus, Listeria monocytogenes, and Staphylococcus aureus among several tested bacterial and yeast strains. Rhamnocin 519 in particular showed strong bactericidal action against L. monocytogenes.
authors.affiliation: Department of Biotechnology, Korea National University of Transportation, Jeungpyeong 368-701, Korea.
authors.forename: Ye-Jin
authors.initials: YJ
authors.lastname: Jeong
authors.affiliation: Department of Biotechnology, Korea National University of Transportation, Jeungpyeong 368-701, Korea.
authors.forename: Gi-Seong
authors.initials: GS
authors.lastname: Moon
keywords: Lactobacillus rhamnosus; Listeria monocytogenes; bacteriocin; narrow-range spectrum; probiotics