A Survey on Bacterial Contamination of Consumpted Foods in Belonging ‎Centers of Baqiyatallah University of Medical sciences

Introduction. Bacteria are the most important factors for food contamination and intoxications, ‎and more than 70% of these diseases are only due to a couple of important bacteria(‎Staphylococcus aureus, Eschersia coli, Listeria monocytogenes, Clostridium perfringenes and ‎Bacillus cereus).The aims of this study are determining of microbial contamination and survey of ‎Coli forms and pathogens bacteria in the consumpted foods and compaired to international ‎standards as well.‎ Material and Methods. In this descriptive study, 72 samples of 4 types of consumpted foods in ‎‎6 centers evaluated and tested with respect to bacteria contamination with the standards method ‎of American Public Health Association(APHA) and Food and Drug Administration(FDA).‎ Results. According to total bacteria and coli form count and contamination to pathogenic ‎bacteria, roast meat and fish are known as the most contaminated and safe foods respectively. From 18 tested samples, 7 sample (38.9%) and 10 samples (55.6%) contaminated with E.coli ‎and S.aureus respectively. None of 72 tested samples were also confirmed with respect to ‎Salmonella and Listeria monocytogenes.‎ Discussion. According to bacterial standard of cooked foods, some of prepared foods in the ‎belonging centers to Baqyatallah University were contaminated more than the recognized ‎standard level, that is possibilities of the university.‎