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Evaluation of the quality of raw and cool milk using HACCP guidelines

The aim of this work was to evaluate the quality of raw and cool milk produced in the municipal district of Canguçu - RS by using guidelines of the HACCP system. Initially, a sampling plan according to norm ABC-STD-105 was set up, and letters for the reductase, mastitis and temperature parameters were developed. The milk samples were evaluated in terms of the parameters total count of aerobious mesophiles, psycotrophic, reductase, acidity, mastitis, cryoscopic index, proof of alcohol and antibiotic residues. The results made it possible to select four ways to obtain milk from twenty producers, determining a control limit for the reductase parameter of 321 minutes, using the equation Y = 2,35 x 10(7) - 7.01 x 10(4).X (r = -0.9284). From the existing relationship between the aerobious mesophiles and psycotrophic counts -Y = 2.35 x 10(7) (r = 0.8561), this equation Y = -8.73 x 10(4) + 0.3209 X and a control limit for psycrotrophic of 2.33 x 10(5) UFC.mL-1 was obtained. In conclusion, 80.0% of the samples are above the limit of established control for the reductase parameter, and it repeats in 65.0% of the samples in the psycotrophic count, showing that there are problems in the milk cooling and milking process stages which represent two critical points of control, contributing with the loss of quality of milk.

HACCP; quality; milk


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