Control de la calidad microbiológica de la leche en la planta de lácteos Freskaleche S.A.

Abstract

The present work deals with the analyzes to evaluate the microbiological quality of raw, thermized milk and final product of the dairy company FRESKALECHE S.A., during a period from December 2021 to April 2022, to achieve the above it was necessary to carry out a standard procedure for the raw milk as: mesophilic and psychrophilic aerobic counts; Enterobacteriaceae and psychrophiles were counted in processed milk. Additionally, analyzes of thermophilic mesophilic spores and HHRS (highly heat-resistant spores) were performed on raw and processed milk samples, the presence of pathogens (Salmonella spp. and Listeria spp.) on surfaces was investigated, the environment and handlers to comply with internal quality standards for the company's quality control. During the process line, the effectiveness of ultra-pasteurization in milk was verified. Similarly, the evaluation of environments, handlers and pathogens yielded acceptable values for the respective counts, indicating good manufacturing practices during the processing of UHT milk.