1. Department of Chemistry, Institute of Exact Sciences, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais 31270-901, Brazil
2. Federal Laboratory of Animal and Plant Health and Inspection of Minas Gerais, Ministry of Agriculture, Livestock and Food Supply of Brazil, Av. Rômulo Joviano, s/no, Olaria, Pedro Leopoldo, Minas Gerais 33250-220, Brazil
3. Veterinary School, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais 31270-901, Brazil