“Authentication of Turmeric Powder from Sudan I, QuinolineYellow and Methanyl Yellow by FTIR Method Combined With Chemometric: Autentikasi Serbuk Kunyit Dari Sudan I, Kuning Quinoline Dan Kuning Metanil Dengan Metode FTIR Yang Dikombinasi Dengan Kemometrik”. Journal Pharmasci (Journal of Pharmacy and Science) 10, no. 1 (January 9, 2025): 41–44. Accessed August 8, 2026. https://e-journal.akfarsurabaya.ac.id/index.php/jps/article/view/486.