Bacteriological evaluation of market raw milk

One hundred random samples of market raw milk were examined for theirsanitary condition.The results of keeping quality tests revealed that 9 (9%) out of examinedsamples were precipitated with alcohol, while 2 samples were clotted on boilingThe mean acidity percent was 0.17±0.03 with a muumum of OJ 3 and amaximum of 0.23.The results of Methylene blue reduction test showed that 46 % ofexamined raw milk samples were graded I (good), while 45% and 9% weregraded Il (fair) and III (bad) respectively.The bacteriological examination showed that the total colony count / ml.ranged from 5xl09to 2.84xl013, with a mean value of3.655xl012 ±0.67xlOI2.Coliforms could be detected in 94% of examined raw milk samples witha mean value of 4.98x 109 ± 1.62x 1 09.E.coli , Enterobacter cloacae , Ent. aerogenes, Klebsiella oxytoca, Kl.pneumonae and Citrobacter freundii could be detected in the examined rawmilk samples at varying percentages.