Abstract

Antimicrobial Activities of Extracts of Some Species of Mangrove Plants and A New Compound Isolated Towards Some Selected Strains

Karnati Rajeswari¹, T. Bhaskara Rao¹, G. V. R. Sharma² and R. Murali Krishna³

DOI : http://dx.doi.org/10.13005/ojc/330256

Abstract:

The bio-materials of four marine mangrove medicinal plants viz., Aegiceras Corniculatum (AGC), Excoecaria agallocha (EA), Rhizophora mucronata (RM) and Xylocarpus granatum (XG) are extracted with methanol and hexane. These extracts are submitted to the antibacterial activity towards the strains: Bacillus puvuilis, Bacillus subtilis, Bacillus coagulans, Staphylococcus aureus, Bacillus licheniformis, Corynebacterium diphtheria, Klebsiella pneumonia, Pseudomonas aeruginosa, Shigella flexneri, Sphingomonas paucimobilis, Escherichia coli and Vibrio cholera adopting Agar-well diffusion method. It is found that a new Flavone Compound isolated from hexane extract of EA is effective towards Bacillus puvuilis, Bacillus subtilis, Bacillus coagulans, Staphylococcus aureus, Bacillus licheniformis, Corynebacterium diphtheria, Klebsiella pneumonia, Pseudomonas aeruginosa, Shigella flexneri, Sphingomonas paucimobilis, Escherichia coli and Vibrio cholera strains while RM MeOH extract is effective towards the strains Bacillus puvuilis, Bacillus subtilis, Bacillus coagulans, Staphylococcus aureus, Bacillus licheniformis, Corynebacterium diphtheria, Klebsiella pneumonia, Pseudomonas aeruginosa, Shigella flexneri, Sphingomonas paucimobilis, Escherichia coli and Vibrio cholera . The XG MeOH extract is found to be effective towards the strains Bacillus puvuilis, Bacillus subtilis, Bacillus coagulans, Staphylococcus aureus, Bacillus licheniformis, Corynebacterium diphtheria, Klebsiella pneumonia, Pseudomonas aeruginosa, Shigella flexneri, Sphingomonas paucimobilis, Escherichia coli and Vibrio cholera strains while AGC MeOH extract is found to be effective towards the strains Bacillus puvuilis, Bacillus subtilis, Bacillus coagulans, Staphylococcus aureus, Bacillus licheniformis, Corynebacterium diphtheria, Klebsiella pneumonia, Pseudomonas aeruginosa, Shigella flexneri, Sphingomonas paucimobilis, Escherichia coli and Vibrio cholera. The order of effectiveness is found to be: EA Hexane > RM MeOH > XG MeOH > AG MeOH. Finally a new flavone compound is found to be more effective than the extracts.

Keywords:

Mangrove plants; extracts; flavone compound; antimicrobial activity on different strains

[ View HTML Full Text]

Back to TOC