Biopolymers and Biomaterials Laboratory, Araraquara University – UNIARA, Araraquara, SP, Brazil São Carlos Institute of Physics, University of São Paulo, São Carlos, SP, Brazil Interdisciplinary Laboratory of Advanced Materials, Centro de Ciências da Natureza – CNN, Universidade Federal do Piauí – UFPI, Teresina, PI, Brazil Company: Seven Indústria de Produtos Biotecnológicos Ltda, Ibiporã, PR, Brazil 5 Chemistry Department, Federal University of São Carlos (UFSCar), São Carlos, SP, Brazil To whom correspondence should be addressed., Brazil