NDLI: Screening and selection of novel animal probiotics isolated from bovine chyme

Content Provider	Springer Nature Link
Author	Ozkan, Alper D. Han, Diren Umu, Ozgun C. O. Angun, Pinar Senturk, Berna Yasa, Oncay Tekinay, Turgay
Copyright Year	2012
Abstract	Probiotics, gut-colonizing microorganisms capable of conferring a number of health benefits to their hosts, are highly desirable as animal feed supplements. Members of the Gram-positive genus Bacillus are often utilized as probiotics, since endospores formed by those bacteria render them highly resistant to environmental extremes and therefore capable of surviving gastrointestinal tract conditions. In this study, 84 distinct bacterial colonies were obtained from bovine chyme and 29 isolates were determined as Bacillus species. These isolates were principally screened for their antimicrobial activity against a group of two Gram-positive and four Gram-negative bacteria, including known human and animal pathogens such as Salmonella enterica, Klebsiella pneumoniae, Pseudomonas aeruginosa, and Staphylococcus aureus. Seven strains displaying strong antimicrobial activity against the test cohort were further evaluated for other properties desirable from animal probiotics, including high spore-forming capacity and adhesiveness, resistance to pH extremes and ability to form biofilms. The isolates were found to resist simulated gastrointestinal conditions and most of the antibiotics tested. In addition, plasmid presence was checked and cytotoxicity tests were performed to evaluate the potential risks of antibiotic resistance transfer and unintended pathogenic effects on host, respectively. We propose that the bacterial isolates are suitable for use as animal probiotics.
Starting Page	1291
Ending Page	1300
Page Count	10
File Format	PDF
ISSN	15904261
Journal	Annals of Microbiology
Volume Number	63
Issue Number	4
e-ISSN	18692044
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2012-12-27
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Antimicrobial Bacillus Feed supplement Isolation Probiotics Microbiology Microbial Genetics and Genomics Microbial Ecology Fungus Genetics Medical Microbiology Applied Microbiology
Content Type	Text
Resource Type	Article
Subject	Applied Microbiology and Biotechnology

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