| Abstract: |
One hundred forty random samples of raw milk from bulk tanks, dairy shops, street vendors, UHT milk, Kareish cheese, Domiati cheese .and yoghurt collected from different localities in Gharbia govemorate were bacteriologically examined for detection of colidentification of Escherichia coli.Results of bacteriological examination revealed that examined samples were highly contaminated with coliform organisms.The mean coliform counts (MPN / 100 ml or /g) in milk from bulk tanks, dairy shops, street vendors, UHT milk, Kareish cheese, Domiati cheese and yoghurt samples were 8.15 x 105, 3.08 x 1013, 1.23 x 1013 , 2.15 X 102, 5.62 X 1012,2.46 X 105 and 2.05 x 108,Escherichia coli could be detected in 15%, 30%, 35%, 60%, 30% , and 30% of the examined samples of raw milk from bulk tanks, from dairy shops, street vendors, Kareish cheese, Domiati cheese and yoghurt, respectively.The serological identification of the isolated E.coli strains using theavailable specific antisera revealed the identification of 28 strainsbelonging to 7 different serotypes : 01 (5 strains), 06 (l strain); 020 (3strains); 027 (6 strains); 086 (9strains); 086 a (one strain); 0167 (3 strains).
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