Fig. 3
From: Key lime (Citrus aurantifolia) inhibits the growth of triple drug resistant Helicobacter pylori
Effect of citral, 4-hexen-3-one, oleic acid, and palmitic acid on urease activities of standard H. pylori strain ATCC 43526 (a) and triple drug resistant (TDR) H. pylori strain (b). An increasing concentration of citral and 4-hexen-3-one attenuated more urease activities of H. pylori strain ATCC 43526 and TDR H. pylori strain (both P <0.001). However, palmitic acid and oleic acid showed no inhibition effects on urease activity (both P > 0.05)