The studies of volatile, non-volatile and direct-diffusible
metabolites were conducted in three replicates repeated twice. The
cultures were incubated at 27-28oC. Growth rates were recorded
daily by measuring colony diameter according to Lilly and Barnett
(1951). The inhibition percentage was obtained using the formula
1% = [(C2-C1)/ C2)] x 100 (Edington et al., 1971).