Sani, A. et al. 2019. EFFECT OF METAL ION Cu (II) and Mg (II) ON THE ACTIVITIES ANTIOXIDANT ANTHOCYANIN OF EXTRACT ETHANOL SKIN DRAGON FRUIT RED(Hylocereuspolyrhizus). Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta). 11, 1 (May 2019), 11–20. DOI:https://doi.org/10.20956/ica.v11i1.6400.