Studies on enteroba cteriaceae in milk and some dairy products

One hundred and twenty random samples (50 of market raw milk, 35 each of processed cheese and yoghurt) were collected from dairy shops and street peddlers from different localities in Sharkia Governorate , Egypt.A survey was undertaken to determine the incidence ofEnterobacteriaceae and coliforms spp. in raw milk, processedcheese and yoghurtIncidence of Enterobacteriaceae spp. in raw milk samples are reported here, show that all milk samples were, found to contain. ’ 4 9Enterbacterzaceae spp. The count ranged from 1.5x10 - 2.6xlOwith a mean value of 1.2x1 08 ± 0.6x108 /ml. The highest frequencydistribution (620/0 )lies within the range 106 _108. All milk samples proved to be contaminated with coliformsby using (VRB)/n1!. The coliform ranged from 1.2x104 -2.1xl09 with a mean value of 9.4x107± 4.6x107 /ml. The highest frequency distribution (620/0) lies within the range 106 _108 while in case of (MPN)/ml, the level of. coliform count detected in milk samE. coli, Citrobacter freundii, Citrobacter diversus, Enterobacter cloacae Enterobacter aerogenes, Klebsiella pneumonae , Kelbsiella rinosclermatis and Kelbsiella ozoenae