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 (Mar. 2026). DOI:https://doi.org/10.55227/ijhet.v4i6.663.