Preparation and Characterization of Betel Leaves (Piper betle Linn) Extract Nanoparticle with Ionic Gelation Method. Journal of Tropical Pharmacy and Chemistry , [S. l.], v. 5, n. 1, p. 15–20, 2020. DOI: 10.30872/j.trop.pharm.chem.v5i1.98. Disponível em: https://jtpc.ff.unmul.ac.id/index.php/jtpc/article/view/98. Acesso em: 19 apr. 2025.