Influência do sistema lactoperóxidase na qualidade do queijo de coalho de leite de cabra

Abstract

The production chain goat milk in Brazil is one of the sectors with growth potential for the economy. The Northeast region stands out in the production of goat's milk, placing the country as the largest producer in South America. However, places socioeconomic conditions are an obstacle for animal husbandry and treatment of milk, causing a decrease in the quality and validity term commercial goat milk and its derivatives, which causes economic losses and offers risk to the consumer. In this context, the use of the activation of the lactoperoxidase system (SLP) to inhibit the growth of pathogenic and spoilage bacteria is presented as an efficient alternative for improving the quality of goat milk and production of derivatives such as cheese curd. The objective of this study was to evaluate the influence of SLP activation in quality and validity commercial cheese curd of goat milk. Comparisons were made through the physical, chemical and microbiological analyzes of the curd cheese from goat's milk produced from raw and pasteurized goat milk, with and without activation of SLP and submitted after manufacturing and storage at room temperature and refrigeration. It was observed that the SLP activation presented significant effect (p> 0.05) in reducing the population of aerobic mesophilic bacteria, psychotropic bacteria, Staphylococcus positive coagulase and total coliform, compared to treatments where the SLP has not been activated. Therefore, these results confirm that the SLP activation in goat milk immediately after milking, is an important alternative to maintain the quality of the raw material in the absence of refrigeration for processing and association SLP pasteurization and cold storage enhances the quality of the cheese curd, extending the period of validity of the commercial product.