Wahana Ayu Saputri, Tatiana Siska Wardani and Anna Fitriawati (2026) “Antibacterial Activity Test Of Extract, N-Hexane Fraction, Ethyl Acetate And Water Of Kesum Leaves (Polygonum Minus H) Against Escherichia Coli ATCC 25922 Bacteria”, International Journal of Health Engineering and Technology, 4(6). doi: 10.55227/ijhet.v4i6.663.