PURBA , Hendri F P; SINAGA , Hotnida; HUSIN , Amir. The Effect of Centrifugation Speed on the Characteristics of Bromelin Enzyme Crude Extract from Flesh, Core and Peel Sipahutar Pineapple . Journal of Environmental and Development Studies, [S. l.], v. 5, n. 02, p. 54–60, 2024. DOI: 10.32734/jeds.v5i01.12510. Disponível em: https://talenta.usu.ac.id/jeds/article/view/12510. Acesso em: 21 may. 2026.