1. Department
of Chemistry, Universidade Federal de Minas Gerais, Av. Pres. Antônio Carlos, 6627, Campus Pampulha, CEP 31270-901, Belo Horizonte, MG Brazil
2. Department
of Chemistry, Universidade Federal de Viçosa, Viçosa, Av. P. H. Rolfs s/n,
CEP 36570-000, Viçosa, MG Brazil
3. Department
of Life Science and Biotechnology, University of Ferrara, via L. Borsari
46, I-44121 Ferrara, Italy