Putri MK, Dellima BREM. Analisis Kadar Kafein dalam Green Bean dan Roasted Bean Kopi Robusta (Coffea canephora) Temanggung Menggunakan Spektrofotometer UV: Analysis of Caffeine Levels in Green Bean and Roasted Bean of Robusta Coffee (Coffea canephora) Temanggung Using UV Spectrophotometer. J. Sains Kes. [Internet]. 2022 Dec. 31 [cited 2026 Apr. 17];4(6):577-84. Available from: https://jsk.jurnalfamul.com/index.php/jsk/article/view/1253