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Retnaningtyas, Y., Wulandari, L. and Fauzan Arrozi 2023. AKTIVITAS ANTIOKSIDAN FRAKSI AIR DAN FRAKSI ETER KOMBINASI EKSTRAK METANOL DAUN KOPI ARABIKA (Coffea arabica L.) DAN KULIT BATANG KAYU MANIS (Cinnamomum burmannii Nees ex BI.): Antioxidant Activity of Water and Ether Fraction Combination of Arabica Coffee Leaves (Coffea arabica L.) Extract and Cinnamon burmanii Bark (Cinnamomum burmannii Nees ex Bi.). Jurnal Tumbuhan Obat Indonesia. 16, 1 (Jul. 2023), 11–18. DOI:https://doi.org/10.31002/jtoi.v16i1.604.