Aini, K.M. et al. 2026. Article Review: Potential of Alkaloid Compounds from East Kalimantan Mangrove Plants as Antibacterial Agents. Hydrogen: Jurnal Kependidikan Kimia. 14, 1 (Feb. 2026). DOI:https://doi.org/10.33394/hjkk.v14i1.18775.