Kusuma, D.W. et al. 2026. Chemical Characterization of Gambir (Uncaria gambir Roxb.) Extract by Uv–Vis Spectrophotometry and HPLC, and Its Antibacterial Activity. Jurnal Riset Kimia. 17, 2 (Sep. 2026), 21–40. DOI:https://doi.org/10.25077/jrk.v17i2.949.