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Isolation and characterization of potential probiotic lactobacilli from pig feces

✍ Scribed by Ji Hyun Yun; Ki Beom Lee; Youn Kyoung Sung; Eun Bae Kim; Hong-Gu Lee; Yun Jaie Choi

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
222 KB
Volume
49
Category
Article
ISSN
0233-111X

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✦ Synopsis

Abstract

This study examined four lactobacilli isolated from pig feces. Two hundred lactic acid bacteria strains were obtained from pig feces using selective culture media (with vancomycin and bromocresol green; termed LAMVAB agar). Microscopy, the catalase test, Gram‐staining, and RAPD‐PCR analysis were used to group the bacteria into 20 related clusters. Phenotypic analysis using the API 50 CH test and genotypic analysis of 16S rDNA sequences identified these clusters as representing single strains of each of Lactobacillus fermentum, Lactobacillus salivarius, Lactobacillus plantarum, and Lactobacillus reuteri. Bacterial survival under the conditions of low pH (2.0) and high concentration (5.0%, w/v) of bile salt was much better than that of the reference strain (Lactobacillus acidophilus ATCC 33199). The isolated bacteria were quite capable of inhibiting the growth of two pathogens, Escherichia coli K88 and Salmonella typhimurium. The high acid‐resistance, bile resistance and antagonism against pathogens, suggest that the four lactic acid bacteria isolated from pig feces could prove useful as piglet probiotics. (Β© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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