Zulfaidah NT, Kurniawati E, Putri GH, Widiani F. The Effect of Variation in Solvent Concentration on Caffeine Content in Green Arabica Coffee Bean Extract (Coffea arabica) using UV-Vis Spectrophotometry . J. Food Pharm. Sci [Internet]. 2024Dec.28 [cited 2025Jan.5];12(3):266-72. Available from: https://journal.ugm.ac.id/v3/JFPS/article/view/17983