Activities of the distilled water, ethanolic and chloroform extracts of
Daldina concentrica an ascomycetous fungus was investigated on
Escherichia coli , Proteus mirabilis , Pseudomonas aeruginosa ,
Bacillus cereus and Staphylococcus aureus ) using agar well
diffusion method. Ethanolic extract of Daldina concentrica showed
significantly antibacterial activity against all the test
microorganisms except Bacilllus cereus (P ≤0.05). Staphylococcus
aureus was the most sensitive organism to the extracts of this fungus
with 17.0mm zone of inhibition with ethanol extract. It was also shown
that chloroform extract of Daldinia concentrica possessed higher
anti-bacterial activity against the five tested microorganisms. The
effect of fresh tissues of the fungus on test bacteria indicated that
Proteus mirabilis was the only sensitive organism with 5.0mm zone of
inhibition while other bacteria were resistant. The implications of
these findings were discussed