Evaluation of milk borne pathogens and their antibacterial sensitivity

In the present study 200 different samples viz., raw milk,, boiled milk, pasteurized milk and skimmed milk were collected from local market of Durg, Rajnandgaon and Khiragad areas of Chattishgarh. All these milk samples were analysed for microbial count and antibiotic sensitivity test. Four types of bacteria were identified in 200 milk samples of three cities. The bacteria identified were Streptococcus, Staphylococcus, Bacillus and E. Coli. Highest mean count was detected in raw milk followed by pasteurized milk. In antibiotic sensitivity test, inhibition zone of Chloramphenicol and Ofloxacin was maximum against Streptococcus (26mm) and Staphylococcus sp.(30mm). The results indicated that analysed milk could contribute a potential risk for public health in the cases that if it was consumed or used in the production of dairy products without being pasteurized or being subjected to a sufficient heat process.