Fig. 2
From: Key lime (Citrus aurantifolia) inhibits the growth of triple drug resistant Helicobacter pylori
Effect of citral (a) and 4-hexen-3-one (b) on the growth of standard H. pylori strain ATCC 43526. Small spot without convexity and translucency is only trace of drop. Citral had inhibitory effect on standard H. pylori strain ATCC 43526, with MIC of 2–5 μg/ml. 4-Hexen-3-one also had inhibitory effect on standard H. pylori strain, with MIC of 20–50 μg/ml