1. Institute of Natural Resources; Federal University of Itajubá; Av. Benedito Pereira dos Santos, 1303 37500-903 Itajubá SP Brazil
2. Department of Biochemical and Pharmaceutical Technology, Faculty of Pharmaceutical Sciences; University of São Paulo; Av. Prof. Lineu Prestes 580, Bl. 16 05508-900 São Paulo-SP Brazil
3. Department of Morphology and Animal Physiology; Universidade Federal Rural de Pernambuco-UFRPE; Av. Dom Manoel de Medeiros s/n 52171-900 Recife PE Brazil