Nadia, S., Julianty, S.M., Tambunan, I.J. and Fujiko, M. 2023. Testing the antioxidant activity of ethanol extract and pineapple skin juice (Ananas comosus (L) Merr) using the radical scavenger method. Journal of Pharmaceutical and Sciences. 6, 5-si (Dec. 2023), 422–431. DOI:https://doi.org/10.36490/journal-jps.com.v6i5-si.455.