Evaluation on quality of raw fresh milk in Phu Dong commune, Gia Lam district, Ha Noi city

Abstract

A total of 80 raw milk samples collecting at the small scale farms and the milk collection stations in Phu Dong commune were used to evaluate some quality criterias and contamination of aerobic bacteria total, including Escherichia coli, Salmonella spp. and Staphylococcus aureus in milk. The studied result showed that the quality of milk collecting in Phu Dong commune reached the standards at average level on freshness, protein and fat contents, dry matter in milk in comparison with Viet Namese standards (TCVN). However, the milk samples contaminating with aerobic bacteria total, E.coli, Salmonella spp. and Staphylococcus aureus were 26/80 (32.5%), 15/80 (18.75%), 3/80 (3.75%) and 11/80 (13.75%), respectively. The isolated pathogen bacteria strains presented high virulence (86.67 - 100% of tested strains) killed the experimental white mice within 48 hours.