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KMID : 1200820210210040825
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Oriental Pharmacy and Experimental Medicine
2021 Volume.21 No. 4 p.825 ~ p.834
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Antimicrobial activity and antioxidant properties of Brucea mollis Wall. ex Kurz: a medicinal plant of Northeast India
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Das Prapty
Hasnu Sneha
Lahkar Lipika
Mahanta Saurov
Borthakur Sashin Kumar
Tanti Bhaben
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Abstract
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Brucea mollis Wall. ex Kurz is a potent medicinal plant occurring on hill slopes of Karbi Anglong district of Assam. The species is popularly known to have antimalarial activity in traditional medicine by a few ethnic communities of Northeastern regions. In the present study, an attempt was made to study the antimicrobial and antioxidant activity of B. mollis. The antibacterial and antifungal activity of plant extracts was screened by the disc diffusion method of Kirby-Bauer sensitivity test against Bacillus subtilis, Staphylococcus aureus, Pseudomonas aeruginosa, Serratia marcescens, Aspergillus fumigatus and Aspergillus niger. Among all the extracts (leaf ethanol, leaf methanol, callus ethanol, and callus methanol), the callus ethanol extracts was found to exhibit better antimicrobial activity against all the bacterial strains at 20?mg/ml concentration. Callus ethanol extracts exhibited maximum inhibition 17.33?±?0.33?mm against B. subtilis. In case of antifungal activity, leaf methanol extracts exhibited 17.66?±?0.33?mm against A. fumigatus and leaf ethanol extracts exhibited 18.33?±?0.33?mm inhibition against A. niger at 20?mg/ml. The minimum inhibitory concentration (MIC) of the both leaves and callus against the bacterial and fungal strains exhibited lowest 0.156?mg/ml MIC against (A) niger from leaf methanol extract; against (B) subtilis, S. aureus and A. fumigatus from callus ethanol extract and against S. marcescens from callus methanol extract. Moreover, DPPH, Hydrogen peroxide (H2O2) radical scavenging activity, reducing power assay, total phenolic, and flavonoid content were investigated. Both the extracts showed antioxidant activity in a dose-dependent manner and ethanolic extract exhibited better antioxidant properties than methanolic extract.
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KEYWORD
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Antimicrobial activity, Aantioxidant properties, Medicinal plant, Brucea mollis, MIC
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