Fractionation and Antibacterial Evaluation of the Surface Compounds from the Leaves of Combretum zeyheri on Selected Pathogenic Bacteria

Figure 4

The effect of (a) the extract, (b) CZSC151154, (c) CZSC155160, and (d) CZSC209213 on the growth curve of S. aureus. Concentration-dependent inhibition of growth of bacteria is shown by all the 3 fractions and the extract. Prolongation of the lag phase occurred compared with the control (S. aureus). The duration of the lag phase for ½ MIC for (a) was 11.1 hours, (b) was 10 hours, (c) was 11.5 hours, and (d) was 12.9 hours. The % inhibition of the ½ MIC values is shown in the graphs.

(a)

(b)

(c)

(d)