Phytochemical Assay and Antioxidant Activity against DPPH of Ethanol Extract from Kenaf Leaf (Hibiscus cannabinus L.). J. Trop. Pharm. Chem [Internet]. 2019 Jun. 30 [cited 2026 Mar. 7];4(5):203-8. Available from: http://jtpc.ff.unmul.ac.id/index.php/jtpc/article/view/273