Tembesu (Fagraea fragrans Roxb) has been reported to have antibacterial activity, anti inflammation, antifungal, antioxidant, antiage, anticancer, antiviral and antiflasmodial, but there have been no reported on isolating and antibacterial activity of alkaloid compound from the steam bark of this plant. Based on it, this research aimes to isolate alkaloid compound and determine the antibacteria…