1. Institute of Chemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil;
2. Department of Natural Sciences and Mathematics, Púnguè University, Chimoio, Mozambique;
3. Goiano Federal Institute of Education, Science and Technology, Rodovia Geraldo Silva Nascimento, Urutaí, Goias, Brazil;
4. Technical School of Health, Federal University of Uberlandia, Uberlândia, Minas Gerais, Brazil