“Preparation And Evaluation Of Hydrogel From Super Red Dragon Fruit Skin Extract (Selenicereus Costaricensis)”. JPK : Jurnal Proteksi Kesehatan 13, no. 2 (January 8, 2025): 185–192. Accessed January 18, 2026. https://jurnal.pkr.ac.id/JPK/article/view/947.