2022. The Effect of Nano Extract Formulation on Antioxidant Activity of 70% Ethanolic Extract of Purple Sweet Potato’s Leaves (Ipomoea batatas L.) Antin-3 Variety: Pengaruh Formulasi Nano Ekstrak terhadap Aktivitas Antioksidan Ekstrak Etanol 70% Daun Ubi Jalar Ungu (Ipomoea batatas L.) Varieas Antin-3. Journal Pharmasci (Journal of Pharmacy and Science). 7, 1 (Feb. 2022), 43–47. DOI:https://doi.org/10.53342/pharmasci.v7i1.270.