Figure 5
Antibacterial activity of coriander extracts in disc diffusion assays. Graph showing mean halo diameters +/- SEM obtained from three separate disc diffusion assays to determine the effect of coriander extracts made with various solvents on the growth of E. coli. Significance levels obtained from two-tailed t tests are denoted by stars: * = Significant, P < 0.05; ** = highly significant, P < 0.01; *** = very highly significant, P < 0.001. Significance levels for coriander essential oil were not determined.