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.
