Isolation, characterization and antioxidant activity assay flavonoid compound from methanol extract of the stem bark gamboge {Garcinia xanthochymus) has been done. The extraction was done by maceration, separation and purification of isolated compound by chromatography technique. Antioxidant activity assay from isolation compound used DPPH (1,1 diphenylpycrii hidrazyl) method with variated conc…