@article{gul_siddiqui_arain_khan_khan_ishrat_2021,  title={Extraction, Partial Purification and Characterization of Bromelain from Pineapple (Ananas Comosus) Crown, Core and Peel Waste},  volume={64},  ISSN={1516-8913},  url={https://doi.org/10.1590/1678-4324-2021200639},  DOI={10.1590/1678-4324-2021200639},  journal={Brazilian Archives of Biology and Technology},  publisher={Instituto de Tecnologia do Paraná - Tecpar},  author={Gul, Anum and Siddiqui, Maryam and Arain, Habiba and Khan, Sadaf and Khan, Hanzala and Ishrat, Urooj},  year={2021},  pages={e21200639} }