@article{oliveira_mahl_simões_silva_2012,  title={Chitosan as flocculant agent for clarification of stevia extract},  volume={22},  ISSN={0104-1428},  url={https://doi.org/10.1590/S0104-14282012005000066},  DOI={10.1590/S0104-14282012005000066},  number={4},  journal={Polímeros},  publisher={Associação Brasileira de Polímeros},  author={Oliveira, Silvia P. D. de and Mahl, Cynthia R. A. and Simões, Márcia R. and Silva, Classius F. da},  year={2012},  pages={401–406} }