Estudos sobre propriedades leiteiras, uso e detecção de agrotóxicos em amostras de leite bovino cru

Abstract

The use of chemical compounds for pest control in agriculture has existed for thousands of years, and over time, the food production chain has become dependent on the use of pesticides. However, their prolonged and indiscriminate use results in soil and water resource contamination, posing environmental and health risks to animals and humans, including neurological and metabolic diseases as well as cancer. In this context, this study investigated the presence of pesticides in raw bovine milk produced in Francisco Beltrão, Paraná, Brazil. The municipality's rural area was divided into nine micro-regions, selecting 10 properties from each, totaling 90 raw milk samples analyzed. Sample preparation was conducted using the QuEChERS (Quick, Easy, Cheap, Effective, Rugged, Safe) acetate method, followed by injection into the HPCL (High-Performance Liquid Chromatography) or HPLC (HighPerformance Liquid Chromatography) analyzer. Pesticide residues were detected in two samples. One sample contained cyproconazole at a concentration of 26.33 ± 0.58 µg/kg, while the other contained 2,4-D at a concentration of 1695.67 ± 73 µg/kg. Both samples exceeded the maximum residue limit for daily intake established by the Brazilian Health Regulatory Agency (ANVISA, 2003), indicating shortcomings in good agricultural practices and highlighting the need for stricter control over the use and commercialization of pesticides to ensure environmental safety and protect both animal and human health.