Biotecnología en el Sector Agropecuario y Agroindustrial (Dec 2008)
VALORACIÓN DE LA CALIDAD HIGIÉNICA DE LA LECHE CRUDA EN LA ASOCIACIÓN DE PRODUCTORES DE LECHE DE SOTARÁ - ASPROLESO, MEDIANTE LAS PRUEBAS INDIRECTAS DE RESAZURINA Y AZUL DE METILENO RAW MILK HYGIENIC QUALITY ASSESSMENT IN THE MILK PRODUCERS ASOCIATION OF SOTARÁ - ASPROLESO, THROUGH INDIRECT TESTS OF REZASURIN AND METHYLENE BLUE
Abstract
Esta investigación permitió encontrar la relación entre las dos pruebas colorimétricas empleadas como métodos indirectos en la determinación de la calidad higiénica de la leche cruda, como son la prueba de Resazurina en una hora y el Tiempo de Reducción del Azul de Metileno. Para ello se analizaron 315 muestras por duplicado, conducentes a la realización de ambas pruebas de manera paralela, encontrándose diferencias significativas para los siguientes estadísticos: rangos con signo de Wilcoxon y t-student con PThis investigation allowed to find the relation between the two colorimetric tests used as indirect methods in the determination of the hygienic quality of raw milk, as it is, One hour Resazurin test and Methylene blue reduction time. To do that 315 samples in duplicate were analized, leading to the perform of both tests in a parallel way, allowing to find significant diferences for the next statistics: ranges with Wilcoxon signs and t-student with P<0.001. The obtained samples resulted from the pursuit along 6 months of the raw milk storage process in the milk producers Asociation of Sotara (ASPROLESO), located in Paispamba, Sotara´s town - Department of Cauca. Parallely to this research, raw milk transportation effect in the hygienic quality was determinate, through a comparative between the quality of the delivered milk to gathering vehicles in farms and the quality in the moment of the reception in the storage center (Cooling plant) in the municipality of Paispamba. For this assessment 280 samples coming from the 4 production and recolection zones of raw milk (Chapa, Piedra León,Ullocos and Paispamba) were analized. The Data obtained were analized by Marginal averages for the fourth routes. The researching allowed to identify that between both tests Resazurin and Methylene blue, Methylene blue reduction time resulted in a wider accuracy degree for the hygienic quality determination particularly because it demands a mayor requirement in the reports
