Análise de resíduo de fungicida Azoxistrobina em vinhos produzidos na fronteira oeste do RS empregando HPLC-DAD

Abstract

The Rio Grande do Sul is the largest producer of wines, grape juice and derivatives, which are produced on average 340 million liters of wine and must annually. Over the past three years, a new polo vineyard begins to emerge with investments in deploying vineyards V. vinifera. The viticulture is being implemented in other municipalities nontraditional alternative diversification of small farms, mostly in the Upper Uruguay, Rio Grande do Sul Obtaining good quality wines and international integration requires the realization of physicochemical analyzes, these are fundamental for the process monitoring and identification of possible changes. Between analyzes, highlights the determination of pesticide residues, from the processes of grape growing due to increased production. The objective of this study is to evaluate the presence of the fungicide azoxystrobin in samples of wines from the Border West of the RS using high performance liquid chromatography coupled with diode array detector (HPLC-DAD). The QuEChERS method (Quick, Easy, Cheap, Effective, Safe Rugedand) is the most consolidated and its use in food has been increasingly expanded. The techniques of gas chromatography (GC) and liquid chromatography (HPLC) are the main tools applied to the analysis of residues in food and beverages for allowing confirmation and determination of a large number of compounds are performed simultaneously. The developed method was applied to the determination of residues of azoxystrobin in 5 samples of red wine Cabernet Sauvignon from different brands from growing areas of Western Border in RS. According to data presented notes that were not detected (nd) fungicide residues, and that the samples are evaluated according to the Maximum Residue Level (MRL) established by the National Agency for Sanitary Surveillance (ANVISA) 500 mg kg- 1. Therefore, it can be concluded that the application of pesticides is being held within the one recommended by the Good Agricultural Practices.