Fractionation and Antibacterial Activity of the Methanol Extract of White Champaka Flowers (Magnolia alba (DC.) Figlar) - Ulil Amna; Irma Setia Fitri; Halimatussakdiah Halimatussakdiah; Mastura Mastura; Syarifah Yanti Astryna (Biology, Medicine, & Natural Product Chemistry, 2026)