CONTROLE DE QUALIDADE EM DIFERENTES ESTAÇÕES DO ANO DO LEITE IN NATURA NO MUNICÍPIO DE RUBIATABA-GO

Abstract

This study had the objective of evaluating the physicochemical and microbiological quality of raw milk in Rubiataba city, Goiàs state. Fifty milk farmers were randomically selected and physicochemical (fat, protein, lactose, Total Dry Extract (TDE), Nonfat Dry Extract (UDE)), microbiological analysis (Somatic Cells Count (SCC) and Total Bacteria Count (TBC) and were evaluated from 2020 to 2024 in different seasons of year. The data were collected from Rubiataba Dairy Plant's reports of milk quality control. They were then organized in Excel, and statistical analysis was performed using the ANOVA and Tukey tests at a significance level of 5% to verify differences. The physicochemical analysis showed minimal variations in fat, protein, lactose, EST and ESD over the five years, all within the limits established by Brazilian regulations. Highlighting an increase in milk protein levels during the fall of 2020 to 2024. However, for microbiological analysis, the majority of milk samples exceeded legal limits, with SCC and TBC above 500,000 cells/mL and 300,000 CFU/mL, respectively. Continuous monitoring and technical support, especially for low-tech producers, are essential to improve these parameters.