The investigation of the presence of Staphyloccous aureus in the dairy product in Karbala city

Abstract

The pathogenic bacterium Staphylococcus aureus contaminated milk and milk products and causes food poisoning. Production, a variety of antibiotic resistance mechanisms, the ability to form biofilms. A total of 300 samples were collected and separated into six categories (imported milk, cow raw milk, imported dairy goods, locally produced dairy products factory, buffalo raw milk, and farm dairy products), from October 2022 to February 2023. The samples were taken at random from various cities around Karbala. S. aureus was isolated from the samples using bacteriological and biochemical techniques, 121(40.3) isolates of the 300 samples that were cultivated and identified, they were classified as S. aureus, and s.aureus were classified into MRSA and MSSA by using antibiotic susceptibility by methicillin antibiotic  was found MRSA,MSSA(40.49 and 59.50) respectively. The rate of biofilm production in overall S. aureus was 100%  and it was divided into three phase (strong, moderate and weak)formation the percentage of this phases among different milk and     milk products was , 74(62,5%) for strong formation, 28(22,08%) for moderate formation and 19(15,42%) for weak formation.