1. Chemistry Department; Institute of Exact Sciences, Universidade Federal de Minas Gerais; Belo Horizonte Minas Gerais Brazil
2. Department of Physiology and Biophysics; Institute of Biological Sciences, Universidade Federal de Minas Gerais; Belo Horizonte Minas Gerais Brazil
3. Pharmacy Department; Universidade Federal de São João del Rey; São João del Rey Minas Gerais Brazil
4. Department of Restorative Dentistry, Faculty of Dentristry; Universidade Federal de Minas Gerais; Belo Horizonte Minas Gerais Brazil