Anggraini RM, Angelina R, Pujaningsih FB, et al. Fourier Transform Infrared (ftir) Spectroscopic Analysis of Hydroxyapatite Scaffold Obtained from Channa striata and Scomberomorus commersoni Fish Bone. PROCA-UNJA. 2026;2(2):213-221. doi:10.22437/proca.v2i2.55512