Figure 4.

Effect of eugenol and cinnamaldehyde on the growth of H. pylori (ATCC26695) at low pH. ATCC26695 was exposed to eugenol at pH4 (solid lines) and pH7 (dotted lines) at concentrations (◆ or ◊) 4 μg/ml, (■ or □) 2 μg/ml, (ß or △) 1 μg/ml, (●) control. Detection limit was shown as a straight line. The controls were maintained with 0.1% DMSO.