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Byeong Joo Seo Mi Ran Mun Rejish Kumar V. J Chul-Joong Kim Insun Lee Young-Hyo Chang Yong-Ha Park 《Veterinary research communications》2010,34(4):323-333
Lactic acid producing bacterial strain Probio-16 was isolated from the swine excrements under anaerobic conditions and characterized
by morphology and biochemical characteristics. The strain was further identified by 16S rRNA gene sequencing and phylogeneitc
analysis. The antimicrobial activity of the strain was assayed by testing for growth inhibition of thirteen pathogenic microorganisms.
The strain was tested for antiviral activity against porcine rotavirus in vitro in African green monkey epithelial cell line
TF-104. Antibiotic susceptibility of the strain against 13 antibiotics was tested using disk diffusion method. Phenotypically
and through 16S rRNA gene sequences, Probio-16 was identified and named as Lactobacillus reuteri Probio-16. This strain was resistant to pH 2.0, 5% porcine bile and exhibited antimicrobial activity against all the thirteen
enteric bacterial pathogens tested. Probio-16 supernatant inhibited porcine rotavirus in vitro in TF-104 cell lines. Except
for erythromycin and penicillin G at a concentration of 4 μg/ml, Probio-16 showed resistance to all other thirteen antibiotics
tested. This study indicates L. reuteri Probio-16 as a novel strain with its tolerance to low pH and bile, antimicrobial activity, antibiotic resistance and antiviral
activity against rotavirus, and an ideal probiotic candidate for animal and human application after the proper in vivo experiments. 相似文献
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V. J Rejish Kumar Seo Byeong Joo Mun Mi Ran Kim Chul-Joong Lee Insun Kim Hongik Park Yong-Ha 《Tropical animal health and production》2010,42(8):1855-1860
A total of 310 bacterial strains isolated from the porcine gastrointestinal tract were tested for their activity against transmissible
gastroenteritis (TGE) coronavirus and other enteric pathogens. Based on activity, the strains Probio-38 and Probio-37 were
selected as potential probiotics and identified as Lactobacillus plantarum Probio-38 and Lactobacillus salivarius Probio-37 respectively by 16S rRNA gene sequencing. Supernatants of these strains inhibited TGE coronavirus in vitro in ST
cells, without any cytopathic effect even after 72 h of incubation. Both the strains exhibited high survival in synthetic
gastric juice. The strains were resistant to 5% porcine bile and exhibited antimicrobial activity against all the 13 enteric
bacterial pathogens tested. These strains also exhibited resistance to most of the antibiotics analyzed. The inhibition of
transmissible gastroenteritis coronavirus and enteric bacterial pathogens as well as the bile tolerance, high survival in
gastric juice, and the antibiotic resistance indicate that the two isolated bacterial strains are ideal probiotic candidates
for animal application after proper in vivo experiments. 相似文献
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