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Microbiology and Biotechnology Letters

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Microbiol. Biotechnol. Lett. 2006; 34(1): 74-77

돼지 장내로부터 분리된 항생제 저항성 Pediococcus pentosaceus의 특성

Characterization of Pediococcus pentosaceus Isolated from Porcine Intestine

Mi-Sung Lee and Ki-Hong Yoon

School of Food Science & Biotechnology, Bioresouce and Application Research Center, Woosong University, 1School of Food Science & Biotechnology, Bioresouce and Application Research Center, Woosong University

Abstract

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A lactic acid bacterial strain resistant to several antibiotics such as oxytetracycline, tylosin, neomycin and sulfathiazole, which have been often used as a therapeutic agent in livestock, was isolated from the porcine gastrointestinal tract. The isolate YB-55 was identified as belonging to the genus Pediococcus with the highest similarity to P. pentosaceus on the basis of its 16S rRNA sequence and biochemical properties. The isolated strain showed viability of over 85% at pH 3.0 and was resistant to bile salt. The strain produced lactic acid of 12.3 g/L by jar fermentation and maintained its viability in the presence of antibiotics at dosage related therapeutic effect, suggesting P. pentosaceus YB-55 may of ffr potential as a probiotics for livestock.

Keywords: Pediococcus pentosaceus, identification, antibiotic resistance, lactic acid bacteria

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