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IJSTR >> Volume 6 - Issue 10, October 2017 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Enterotoxin Producing Ability And Antimicrobial Susceptibility Of Coagulase-Negative Staphylococci Isolated From Goat Milk, Cheese And Salted Yoghurt In Turkey

[Full Text]



S. Pehlivanlar Onen, O. Aygun



Antimicrobial susceptibility, Coagulase-negative staphylococci, Enterotoxin, Goat milk.



The aim of this study was to determine enterotoxin producing ability and antimicrobial susceptibility of coagulase negative staphylococci (CNS) in goats’ bulk milk, cheese and salted yoghurt. CNS strains were identified by using GP card in VITEK 2 system. The presence of enterotoxins was determined by enzyme immunoassay test by using RIDASCREEN test kit. Antibiotic susceptibility in CNS strains was detected by using AST-P640 card in VITEK 2 system. A total of 100 CNS strains were isolated in 22 (55%) bulk milk samples and in 23 (57.5%) cheese samples. Staphylococcus spp. could not be isolated from salted yoghurt samples. The most encountered species were S. caprae (51.9%), S. chromogenes (11.5%) and S. xylosus (9.6%) from milk samples and S. saprophyticus (60.4%), S. xylosus (12.5%) and S. haemolyticus (8.3%) from cheese samples. Four CNS strains (4%) isolated from samples were capable of producing enterotoxin. While all isolates were resistant to at least one antibiotic, 74% of CNS strains showed resistance to two or more antibiotics. Enterotoxin production ability and high antibiotic resistance of the CNS strains isolated from goat bulk milk and cheese can lead to a risk for public health.



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