Antibacterial Activity and Phytochemical Study of Six Medicinal Plants used in Benin

Abstract

The ethanol extracts obtained from Psidium guajava, Flacourtia flavescens Boswellia dalzielii, Ficus exasperata, Pavetta corymbosa and Hybanthus enneaspermus, six species traditionally used in Benin to treat several infectious diseases, were evaluated for their in vitro antimicrobial activity against Staphylococcus aureus, Enteroccocus feacalis, Escherichia coli and Pseudomonas aeruginosa. The minimum inhibitory concentration of extracts was determinate using the microplate dilution method. The presence of major phytoconstituents was detected qualitatively. The diphenylpicrylhydrazine radical scavenging activity was also performed. The extracts exhibited antibacterial activities against the tested bacteria. Boswellia dalzielii, Psidium guayava, Pavetta corymbosa and Flacourtia flavescens exibited the lowest minimum inhibitory concentration values (0.313-2.5 mg mL(-1)). Pseudomonas aeruginosa was the lest sensitive microorganism with MIC values higher than 10 mg mL(-1). In antioxidant assay the crude extracts of B. dalzielii and P. corymbosa appeared to be as potent as quercetol with an inhibition percentage of 83 and 75.3% at 10 microg mL(-1) which is comparable to 75.9% for quercetol at the same concentration.

Chemical composition and biological activities of extracts and essential oil of Boswellia dalzielii leaves

“…To our knowledge, there is no work on successive extracts of B. dalzielii leaves. The only study of B. dalzielii (Anago et al 2011) showed that an ethanolic extract had an inhibition percentage of 83% at 10 mg/L.…”

Assessment of In vivo antioxidant properties of Dacryodes edulis and Ficus exasperata as anti-malaria plants

“…The inclusion of these plants amongst others used for malaria treatment is not unconnected with the antioxidative stress exhibited by the plants, which is directly linked with antioxidant potential of several phytochemicals of the plants species [4,7,12,[25][26][27][28] . Previous studies have shown that the plants was multipurpose species in African folk medicine in the treatment of several diseases conditions.…”

In vitro antimicrobial activities of Acalypha ornate leaf extracts on bacterial and fungal clinical isolates

“…Their study reported that 89 plant-derived drugs currently used in modern medicine were originally discovered by the study of traditional remedies and folk knowledge of indigenous people. Several studies reported that medicinal plants used in various localities possess antimicrobial activity and hence justify their use by the communities (Cheruiyot et al, 2009;Anago et al, 2011;Njume et al, 2011). Acalypha ornata (botanical family Euphorbiaceae) is used as an ornamental garden plant.…”