Qualidade do leite produzido no estado de Goiás - ocorrência de resíduos de antimicrobianos e acidez titulável
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Data
2011-02-21
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Universidade Federal de Goiás
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Milk is considered one of the nutritionally complete foods, consumers and inspection organizations require that this product has innocuousness and good quality. The veterinary medicinal products, in particular antimicrobials have been widely used in stockfarming to treat and preventi diseases (mastitis). However, when they are used in an inappropriate manner, the presence of residues of antimicrobials such as sanitizers, antibiotics or chemotherapic drugs, endanger animals´ and humans´ health, predisposing the population to allergic reactions, carcinogenic activity, microbial resistance, in addition to causing economic losses to industries, producers and governments. Furthermore, the analysis of titratable acidity in milk is one of the parameters used by dairy industry for the indirect determination of its quality, being compulsory in the milk reception platforms the industries. In this study 992 samples (441 of raw, 327 of pasteurized and 224 of Ultra High Temperature (UHT) milk) were collected from April to November 2010 in the properties and places of commercialization, and analyzed in the State of Goias. The commercial kit Delvotest® SP-NP was used to carry out the antimicrobials research, a methodology according the federal law for the titratable acidity, and the software SPSS version 15.0 for data analysis. Out of the analyzed samples 8.47% (5.34% of raw milk, 1.92% of pasteurized milk and 1.21% UHT milk) were positive for the presence of antimicrobials residues. As for titratable acidity, 25.30% of the samples (12.10 % raw milk, 9.57% of pasteurized milk and 3.63% UHT milk) were not within standard values. Among these samples, 10.48% were below the recommendation and 14.82% were above. The analyzes results confirm that the quality of raw, pasteurized and UHT milk produced and consumed in Goias is not within the standard values recommended by federal law, as regards the presence of antimicrobial residue and titratable acidity, which represents risk to public health, besides causing economic losses in milk processing.
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SILVA, Thaysa dos Santos. Quality of milk produced in the state of Goias - occurrence of antimicrobial residues and acidity. 2011. 96 f. Dissertação (Mestrado em Ciências Agrárias - Veterinaria) - Universidade Federal de Goiás, Goiânia, 2011.