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2023. Antioxidan Activity from Methanol Extract of Kratom Leaves (Mitragyna speciosa) Maseration Result Using The DPPH Method: Aktivitas Antioksidan Ekstrak Metanol Daun Kratom (Mitragyna speciosa) Hasil Maserasi Menggunakan Metode DPPH. Journal Pharmasci (Journal of Pharmacy and Science). 8, 2 (Jul. 2023), 137–142. DOI:https://doi.org/10.53342/pharmasci.v8i2.357.