Antimicrobial activities of the root, stem and leaf extracts of Argemone mexicana L.

Chinnappan Alagesaboopathi, Natarajan Kalaiselvi

Department of Botany, Government Arts College (Autonomous), Salem — 636 007. Tamilnadu, India

Key words: Argemone mexicana, antimicrobial activity, plant extracts, agar well diffusion method, medicinal plant, bacteria.

Abstract

The present study was designed to evaluate the antibacterial activity of the aqueous, acetone, ethanol and chloroform extracts of the leaves, stem and root of Argemone mexicana L. (Papaveraceae) using agar well diffusion method against four strains of bacterial species, namely, Escherichia coli, Klebsiella pneumoniae, Bacillus cereus and Staphylococcus aureus. Among various extracts studied, the ethanol stem extract showed greatest antibacterial activity against Klebsiella pneumoniae (22.86 mm); following by acetone extract (17.35 mm).

The highest inhibition zone observed for ethanol extract of A. mexicana root against Bacillus cereus was 20.05 mm. The maximum activity of ethanol leaf extract against Staphylococcus aureus was 19.12 mm. The research recommends that the extract of the plant parts possesses new wide spectrum antibacterial activities. The stem extract showed more inhibitory effect than the root and leaf extracts. This research suggests that natural produces obtained from A. mexicana L. may provide to the evolution of novel antimicrobial agents.

Get the original articles in Source: Volume 2, Number 5, May 2012 — IJB

Published By: International Journal of Biosciences (IJB)

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