Thermophilic bacteria in market raw milk at Giza city

ABSTRACT

Fifty random samples of market raw milk, collected from different retail outlets in Giza city were examined for the presence of thermophilic bacteria. The obtained results revealed contamination of 84% of the examined samples with thermophiles, with a mean count of 8.50 X10[2] +/- 2.57 X 10[2] /ml. The highest frequency distribution [57.14%] lies within the range 10[2] - 10[3]. B.subtilis, B.stearothermophilus, B.pumilis, B.lichen formis, B.coagulans, B.alvei, Strept. thermophilus, L.bulgaricus and L.acidophilus could be isolated from the examined samples at different percentages [5-21.25%]. The economic and public heath importance of the isolated organisms, as well as the suggested control measures were discussed