Abstract
A total of fifty random samples of yoghurt collected from vendors and wholesale markets in El-Behera Governorate to assess their microbiological quality. The pH was determined and microbiological assessments were conducted in order to ascertain, the Coliforms count, Enterococci count, Staphylococcus aureus count and yeast count and mould count in the samples. The results revealed that the mean values of pH was 4.06 ± 0.068, the mean value of coliform, Enterococci, Staphylococcus aureus, yeast and mould counts were 5.6 x 104 ± 3.68 x 10 3, 5.8 x 104 ± 5.43 x 103, 5.5 x 104 ± 3.45 x 103, 5.6 x 104 ± 4.9 x103 and 5.3 x 104 ± 3.33 x103 respectively, with respective incidences of 58, 42, 28 and 40%. The findings suggest that the yogurt traded in whole sale market in El-Behera governorate has poor microbiological quality control. This poses danger to public health. Therefore, attention of the appropriate government agencies and manufacturers is needed to ensure that sale of yogurt by vendors is done in most appropriate condition and in a mobile refrigerator to maintain adequate temperature, thereby reduce contamination.

Key words: Microbiological Quality, Yoghurt, Enterococci, Staphylococcus aureus