6 Acknowledgments

The authors thanks the National Council for Scientific and Technological Development (CNPq Grants 404357/2013-0) for financial support to the work execution. The first author thanks the Coordination of Improvement of Higher Education Personnel (CAPES) for the scholarship. The authors would also like to thanks Miriam Vieira De Albuquerque for her support during the experiment and Noellle B. Vanderlei dos Santos for her kind revisions of this manuscript.