Ernoviya, E., Afriadi, A. and Silfania, H.N. 2023. Analisis Senyawa Kafein pada Bubuk Kopi Jenis Arabika di Kota Takengon Menggunakan Analisis Kualitatif dan Kuatitatif: Analysis of Caffeine Compounds in Arabica Ground Coffee in Takengon City Using Qualitative and Quantitative Analysis. JOPS (Journal Of Pharmacy and Science). 6, 2 (Jun. 2023), 176–183. DOI:https://doi.org/10.36341/jops.v6i2.3371.