Ocorrência de leite instável não ácido (LINA) no município de Itaqui-RS

Abstract

The objective of this work was to verify the occurrence unstable non acid milk (LINA) in raw milk samples produced informally in Itaqui-RS. Were collected 19 samples of milk in informal properties between July and October 2014. The samples were obtained simulating the common conditions of marketing, encoded and transported immediately to the laboratories of the Federal University of Pampa Itaqui Campus, where were carried out the physico-chemical analysis acidity, test the Alcohol, test of boiling. Were performed determinations of protein, fat and lactose, and the somatic cell count (SCC). Among the 19 samples analyzed 73.68% showed high acidity (>18g of lactic acid/100 mL), and 15.78% were diagnosed as LINA and only 10.52% were considered normal. The results of the proximal composition showed that the samples classified as LINA presented the fat and lactose higher than those found in normal milk, however, the protein content was lower than the other. The somatic cells showed a count above the permitted limits by Normative Instruction n° 62/2011 in 52,63 % of the samples.