DIAN FATIMATUS SALWA; TATIANA SISKA WARDANI; BANGKIT RISKA PERMATA. Antibacterial Activity Test Of Extracts And Fractionsn-Hexane, Ethyl Acetate, And Pineapple Peel Water (Ananas Comosus(L.) Merr.) Against Bacteria Propionibacterium Acnes ATCC 6919. International Journal of Health Engineering and Technology, [S. l.], v. 4, n. 6, 2026. DOI: 10.55227/ijhet.v4i6.655. Disponível em: https://afdifaljournal.com/journal/index.php/ijhet/article/view/655. Acesso em: 3 jun. 2026.