Nurkholifaturrohmah, Perwitasari M, Putri IK, Beandrade MU. EFFECT OF ROASTING TIME ON CAFFEINE CONTENT IN ARABICA COFFEE BEANS BY ANALYTICAL METHOD HIGH PERFORMANCE LIQUID CHROMATOGRAPHY (HPLC). J. Mitra Kes [Internet]. 2026 Jun. 30 [cited 2026 Jul. 1];8(02):128-47. Available from: https://jmk.stikesmitrakeluarga.ac.id/index.php/jmk/article/view/456