Determinación de la incidencia de adulterantes e inhibidores de leche cruda almacenada en diez centros de acopio de la provincia del Azuay

Abstract

In the present research we determined the incidence of adulterants and inhibitors of raw milk in ten collection centers with 2000 to 10,000 liters reception capacity covering 7 Counties in the Province of Azuay. We collected a total of 90 samples taken on 3 visits to each center during the months of July and August. In each sample the presence of antibiotics, peroxides and neutralizing was analyzed using rapid diagnostic tests in the laboratory of Food Safety of AGROCALIDAD Azuay. For the detection of antibiotics we used the tri sensor kit with a sensitivity of analysis globally validated according to the maximum levels allowed by the CODEX ALIMENTARIUS, and it is used by the Agency for official control and can detect three families of antibiotics: Beta-lactams, Sulfonamides and Tetracycline. Detection of the presence of peroxides was done using the test M-Quant that can measure a range between 0,5 to 25 mg/l of H2O2. The presence of neutralizing was determined using the method of Alizarin stablished on STANDARD INEN 9: Requirements Raw Milk. We tested 141.500 liters of raw milk, which showed that 64,7% of the total of liters sampled during the study, are unfit for human consumption, as provided in the Standard INEN 0009: 2012 and CODEX The incidence of antibiotics was 13,3% of positive beta-lactams cases and no presence of sulfonamides and tetracycline. 16, 4% of raw milk was adulterated with peroxide and 60% with neutralizing.