Identification of toxic shock syndrome toxin-1 genes of Staphylococcus aureus isolated from local cheese and cows milk in Tabriz city

Subject Areas : Food Microbial Contamination

jalal  Shayegh ¹ (Faculty of Veterinary Medicine, Shabestar Branch, Islamic Azad University)
نسرین  پورشفیع ² (دانشجوی کارشناسی ارشد)
Hayedeh  Mobin ³ (Faculty of Medicine, Tabriz Branch, Islamic Azad University)

Received: 2015-07-28 Accepted : 2016-03-04 Published : 2016-11-01

Keywords: Staphylococcus aureus, Milk, Cheese, Tabriz, TSST-1,

Abstract :

Identification of toxic shock syndrome toxin-1 genes of Staphylococcus aureus isolated from local cheese and cows milk in Tabriz city Staphylococcus aureus is one of important food poising bacteria. The bacterium cause this poising by produce of the different toxin. The aim of this study was determine the presence of toxic shock syndrome gene (tst) of S. aureus isolated from milk and traditional cheese. For this purpose 51 isolates included isolates of bovine milk (23), buffaloes milk (5) and traditional cheese (23) collected and were studies in tst gene by PCR. Among mentioned isolates 2(3.9%) isolates were positive for the tst genes belong to bacteria were isolated from cheese. Results of this study showed low prevalence of tsst-1 producing gene on Dairy products in mentioned area in comparison with similar study. It maybe this isolates harbored the mentioned gene in their genome transmit by worker on food industry Key words: Staphylococcus aureus, TSST-1, milk, cheese, Tabriz.