Formulation and Physicochemical Characterization of Guava (Psidiumguajava L.) Leaf Extract-Loaded Chitosan Nanoparticles. JRKI [Internet]. 2026 May 31 [cited 2026 Nov. 6];8(2):189-98. Available from: http://jurnalfarmasi.or.id/index.php/jrki/article/view/999