AVALIAÇÃO DE DADOS DE CONTROLE DE QUALIDADE FÍSICO-QUÍMICA E MICROBIOLÓGICA DE LEITE “IN NATURA”

Abstract

The objective of this study was to evaluate the physical-chemical and microbiological quality of cow milk in natura in the municipality of Uruana-GO. Three milk producers were selected and the physicochemical properties (fat, protein, lactose, Defatted Dry Extract- ESD and Total Dry Extract-EST) and microbiological (Somatic Cell Count- SCC and Total Bacterial Count- TBC) of fresh milk were evaluated in the period from 2019 to 2021. The data of the physicochemical and microbiological analyses were obtained through a selection of the set of information from the reports of Laticínios El Shaday EIRELI, the same were tabulated in Excel spreadsheet. Statistical analysis was performed evaluating the data by variance analysis (ANOVA) and Tukey test at 5% significance level for comparison and verification of deviations between means. The results of the physical-chemical analyses indicated that, in the three years evaluated during the study, the variations in fat, protein, lactose, TSS and ESD were minimal and within the values recommended by Brazilian legislation. For the microbiological analysis, most of the milk samples did not meet the SCC and TBC levels established by the Brazilian legislation, being above 500 thousand cells/mL and 300 thousand CFU/mL, respectively. Overall, there was an improvement trend in the microbiological quality of the milk over the period studied, with a progressive decrease, especially for producers P2 and P3, with a reduction of CBT of almost 80% throughout the study. The monitoring and technical assistance of milk producers, especially those with a lower technological level, should be a constant practice in order to achieve a better quality product that meets the Brazilian legislation.