Abstract
The antimicrobial activity of oil and stem bark extracts of pentaclethra macrophylla benth was determined against staphylococcus aureus, streptococcus pneumonia, Eschericia coli, Haemophilus influenza, α-Haemolytic Streptococcus and Yeast, using hole diffusion method. The results revealed that the most inhibitory zone (25.0mm) was recorded in hexane oil extract against staphylococcus aureus and α-Haemolytic Streptococcus. The minimum inhibitory concentration (MIC) of the oil extract ranges between 7.8125-62.5mg/ml on all the test organisms and aqueous stem bark extract inhibited only Eschericia coli with minimum, inhibitory concentration (MIC) of 62.5mg/ml. However, the oil extract possessed more antimicrobial activity than the stem bark extract. These findings lend more knowledge to the use of pentaclethra macrophylla benth for medicinal purposes.
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