“Testing the Activity of Chitosan Nanohydrogel from Belut Sawah (Monopterus Albus) Extract As a Future Anti-Aging Candidate”. JURNAL FARMASIMED (JFM) 8, no. 1 (November 13, 2025): 331–338. Accessed January 9, 2026. https://ejournal.medistra.ac.id/index.php/JFM/article/view/3127.