1. Department of Food Science; Federal University of Lavras; CP 3037, 37200-000 Lavras MG Brazil
2. Department of Chemistry; Federal University of Lavras; Minas Gerais Brazil
3. Department of Environmental Engineering; Federal University of Lavras; Minas Gerais Brazil
4. Foods Department, Faculty of Pharmacy; Federal University of Minas Gerais; Belo Horizonte MG Brazil