Evaluation of the Hygienic Quality of Raw Cow's Milk in Oujda City Morocco

摘要

The aim of this study is to determine the microbiological quality of raw cows' milk of Oujda city. Raw milk samples are collected randomly between June 2014 and May 2015 from 20 Mahlaba (dairies) for microbiological evaluation. The samples are analyzed to determine total mesophilic aerobic bacteria (TMAB), total coliform, fecal coliform, staphylococcus aureus, fecal streptococci, proteolytic bacteria and lactic acid bacteria. The results of bacterial count showed that there is a variation between allthe milk samples and a period effect is also observed. The mean counts of total mesophilic aerobic bacteria from all sale points are between 1.76X10° and 40.17X10" CFU/ml. Milk samples reveled counts total coliform and fecal coliform ranging from 0.58X105 to 11.10X105 CFU/ml and from 0.60X103 to 14.64X103 CFU/ml, respectively. Staphylococcus aureus are also detected in all samples with counts ranging from 0.35 x 10' to 3.08x 10'CFU/ml. Fecal streptococci are found in all milk samples, at counts ranging from 0.16 X102 to 2.18 X10* CFU/ml. And finally, proteolytic and lactic acid bacteria are between 0.3 x 10-'and 2.86X103 CFU/ml and 2.37X106 and 24.14 X106 CFU/ml respectively. These results indicate a lack of compliance with good manufacturing practice at milking, collection and transportation of raw milk.