Results and Discussion
As shown in Figure 1, both spectrophotometric and CFU
assays provided similar results. A. fumigatus CF collected from
the 48 h stationary phase cultures almost completely inhibited
the growth of P. aeruginosa (control: 3.867x1011 ± 2.161x1011
CFU/ ml; CF: 9.333x106 ± 1.146x107 CFU/ ml; p=0.0071) but
that obtained from 24h old culture showed no significant
growth inhibition (control: 7.392x1010 ± 1.312x1011 CFU/ ml;
CF: 5.851x1010 ± 2.389x1010 CFU/ ml; p=0.540). A CFU assay of
P. aeruginosa cells treated with CF showed that the A. fumigatus
produced factor was bacteriostatic and no significant reduction
of CFUs was obtained for the CF-treated group compared to the
initial inoculum whereas the control group showed a CFU increase