Septi Wulandari, Mauritz Pandapotan Marpaung. PENATAPAN KADAR ALKALOID INFUSA BIJI KOPI ROBUSTA SANGRAI (Coffea canephora Pierre Ex. A Froehner) DENGAN SPEKTROFOTOMETRI UV-VIS. JK: JIMS [Internet]. 2022Dec.31 [cited 2025Apr.30];12(02):113 -19. Available from: https://sumsel.ipoinstitute.co.id/index.php/multiscience/article/view/352