Suprijono A, Indriastuti F, Hesti WS AA. Comparison Activity Test of Antioxidant of Water Extract Coffee Robusta (Coffea canephora) and Water Extract Coffee Arabica (Coffea arabica) with the Method DPPH (1,1-difenil-2-pikrilhidrazil). ijlsar [Internet]. 2024 Jul. 30 [cited 2024 Nov. 21];3(07):633-7. Available from: https://ijlsar.org/index.php/ijlsar/article/view/325