Zilhadia, Mabrurotul Mustafidah, Herdini, and Chairul Amin Muhammad. “Analysis of Porcine Gelatin in Hard Capsule Shells by Using A Combination of FTIR and Principal Component Analysis Methods”. Jurnal Sains Farmasi & Klinis 13, no. 1 (June 30, 2026): 84–89. Accessed July 25, 2026. https://jsfk.ffarmasi.unand.ac.id/index.php/jsfk/article/view/1996.