@article{novaes_jozala_mazzola_júnior_2014,  title={The influence of pH, polyethylene glycol and polyacrylic
               acid on the stability of stem bromelain},  volume={50},  ISSN={1984-8250},  url={https://doi.org/10.1590/S1984-82502014000200017},  DOI={10.1590/S1984-82502014000200017},  number={2},  journal={Brazilian Journal of Pharmaceutical Sciences},  publisher={Universidade de São Paulo, Faculdade de Ciências Farmacêuticas},  author={Novaes, Letícia Celia de Lencastre and Jozala, Angela Faustino and Mazzola, Priscila Gava and Júnior, Adalberto Pessoa},  year={2014},  month={Apr},  pages={371–380} }