Antibacterial Activity of Red Galangal (A. purpurata) Extract on the Growth of E. tarda Bacteria

This study aimed to analyze the antibacterial activity of red galangal extract (Alpinia purpurata) against growth E. tarda. aims this was determine compounds and effectiveness (A. tarda bacteria. Antibacterial test carried out by MIC disc test. The used doses 1 ppm, 10 100 500 1000 ppm with incubation for 24 hours. 200 300 400 a positive control 5 chloramphenicol negative without treatment. Photochemical contains flavonoid compounds, alkaloids, tannins, triterpenoids, saponins. results showed that highest inhibitory diameter 7.55 mm at dose bacteriostatic because it decreased its zone after 48 hours incubation. 56.56%