UJI AKTIVITAS ANTIOKSIDAN EKSTRAK DAUN SIRSAK (ANNONA MURICATA LINN) TERHADAP DPPH (1,1-DIPHENYL-2-PICRYLHYDRAZIL) - NISA NASPIAH; MUHAMMAD AMIR MASRUHIM; VICTORIA YULITA FITRIANI (Universitas Padjadjaran, 2013)