Firmansyah, Muchammad, Daniel, Daniel, AND Marliana, Eva. " POTENTIAL ANTIOXIDANT ACTIVITY OF METHANOL EXTRACT OF SINGKIL LEAF (Premna cordifolia Roxb.) USE DPPH METHOD: A MINI RIVIEW" PROSIDING SEMINAR NASIONAL KIMIA [Online], Volume 2 Number 1 (7 November 2023)