Qualité hygiénique du lait de colportage prélevé des points de vente de la ville de Rabat / Hygienic quality of collected hawking milk outlets in the city of Rabat

Les Technologies de Laboratoire 01/2012; 7.

Des échantillons de lait cru, prélevés des points de vente de la ville de Rabat, ont été analysés en vue d'évaluer leur qualité hygiénique. La flore aérobie mésophile totale était élevée dans le lait cru de colportage (4.4 107UFC/mL). La charge moyenne en coliformes totaux et fécaux était de 3.8 105UFC/mL et 1.91 105UFC/mL . Les staphylocoques étaient absents dans tous les échantillons. La présence d’une flore de contamination (Klebsiella, Proteus mirabilis et E. coli) témoignent d’un manque d'hygiène au cours du circuit de colportage du lait cru. L'isolement et l'identification biochimique des 9 souches de bactéries lactiques a mis en évidence 3 espèces du genre Lactobacillus : Lactobacillus acidophilus, Lactobacillus amylovorus et Lactobacillus yamanashiensis.

Samples of raw milk were collected from retail outlets in the city of Rabat, were analyzed to assess the hygienic quality. Results indicated that counts of the aerobic plate count were particularly high in all the samples analyzed (4.4 107CFU/mL). Total and fecal coliforms were average of 3.8 105 CFU/mL and 1.91 105CFU/mL respectively. Staphylococcus were absent in all samples. The presence of germ contamination (Klebsiella, Proteus mirabilis and E coli) attest the poor hygienic quality of circuit hawking milk. Isolation and biochemical identification of nine strains of lactic bacteria revealed three species of Lactobacillus genus: Lactobacillus acidophilus, Lactobacillus amylovorus et Lactobacillus yamanashiensis.

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