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. Pharmasci [Internet]. 2025 Jan. 9 [cited 2026 Jun. 21];10(1):41-4. Available from: https://e-journal.akfarsurabaya.ac.id/index.php/jps/article/view/486