Hardi, Jaya. “Immobilization of Bromelain from Pineapple Core by Chitosan-Alginate and Its Application in Virgin Coconut Oil Production”. BioNatura Journal: Ibero-American Journal of Biotechnology and Life Sciences 2, no. 2 (June 15, 2025): 14. Accessed April 16, 2026. https://bionaturajournal.com/repositorio/index.php/bionatura/article/view/156.