J. Vet. Sci. 2017; 18(1): 95-99  
Probiotic properties and adsorption of Enterococcus faecalis PSCT3-7 to vermiculite
Jin-Yoon Kim1, Elias Gebru Awji2,†, Na-Hye Park1, Ji-Yong Park1, Jong-Choon Kim3, Sam-Pin Lee4, Joo-Won Suh5,*, Seung-Chun Park1,*
1Laboratory of Veterinary Pharmacokinetics and Pharmacodynamics, College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Korea
2Lovelace Respiratory Research Institute, Albuquerque, NM 87108, USA
3Laboratory of Veterinary Toxicology, College of Veterinary Medicine, Chonnam National University, Gwangju 61186, Korea
4Department of Food Science and Technology, Keimyung University, Daegu 42601, Korea
5Center for Nutraceutical and Pharmaceutical Materials, Department of Bioscience and Bioinformatics, Myongji University, Yongin 17058, Korea
Correspondence to: Joo-Won Suh, Seung-Chun Park
Tel: +82-53-950-5964; Fax: +82-53-950-5955; E-mails: parksch@knu.ac.kr (SC Park), jwsuh@mju.ac.kr (JW Suh)
Present address: Department of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA
Received: January 18, 2016; Revised: May 9, 2016; Accepted: June 8, 2016; Published online: March 30, 2017.
The probiotic properties of Enterococcus (E.) faecalis PSCT3-7, a new strain isolated from the intestines of pigs fed dietary fiber containing 50% sawdust, were investigated. E. faecalis PSCT3-7 tolerated a pH range of 3 to 8 and 0.3% bile salts, and it inhibited the growth of Salmonella Typhimurium in a concentration-dependent manner. In addition, E. faecalis showed resistance to several antibacterial agents. Vermiculite, a nutrient and microbial carrier, increased the bile tolerance of the strain. Scanning electron microscope images revealed good adsorption of E. faecalis PSCT3-7 onto vermiculite. E. faecalis PSCT3-7 represents a potential probiotic candidate to administer with vermiculite to swine.
Keywords: Enterococcus faecalis, Salmonella Typhimurium, lactic acid bacteria, probiotics, swine

© 2017 The Korean Society of Veterinary Science.