Analysis of Genetic Diversity of Bifidobacterium spp. Isolated from Korean Adults Fecal Samples

한국 성인 분변 시료에서 분리한 비피더스균의 유전자 다양성 분석

  • Published : 2004.02.01

Abstract

Twelve strains of Bifidobacterium spp. were isolated from the feces of healthy Korean 20∼30 years. The identification of genera from isolates were performed by the microscopic observation and fructose-6-phosphate phosphoketolase (F6PPK) activity which is the key enzyme to distinguish the Bifidobacterium spp. from other anaerobic bacteria. To determine the antibacterial resistance patterns, minimum inhibitory concentration (MIC) of several antibiotics (including anti-tuberculosis agents) was determined. Five of the isolate!, showed the high degree of resistance to vancomycin. To investigate the genetic diversity between isolates and type strain of Bifidobacterium spp. from KCTC, we peformed the RAPD-fingerprinting. Using a total set of four primers, it is possible to distinguish the isolates and Bifidobacterium spp. from KCTC. Thus, Bifidobacterium strains isolated from our samples may be a new species or strains of Bifidobacteriurn genera, and have the potential as a probiotics.

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