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BMC Complementary Medicine and Therapies
Published in: BMC Complementary Medicine and Therapies 1/2018

Open Access 01-12-2018 | Research article

Antibacterial efficacy of leaf extracts of Combretum album Pers. against some pathogenic bacteria

Authors: Sunanda Burman, Kuntal Bhattacharya, Devaleena Mukherjee, Goutam Chandra

Published in: BMC Complementary Medicine and Therapies | Issue 1/2018

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Abstract

Background

Plant derived medicines show significant contributions to mankind in treating infections of pathogenic bacteria. Recently plants are used in pharmaceutical industries for novel drug preparations because to ensure efficacy and safety as synthetic antibiotics are threatened for their multidrug resistance. The present study aimed at finding antibacterial potential of aqueous and ethanolic leaf extracts of Combretum album.

Methods

Antibacterial activity was evaluated against seven bacterial strains by determining minimum inhibitory concentration (MIC) and zone of inhibition. Diameters of the zone of inhibition were compared with standard antibiotics. Preliminary phytochemical screening was done according to standard protocol. FTIR analysis was performed to identify the general phytochemical groups of compounds in the extract. All experiments were conducted in triplicate and values were expressed as the mean ± standard deviation. One-way analysis of variance (ANOVA) and Tukey tests were performed for statistical justification.

Results

Maximum zones of inhibition were found in case of ethanolic extracts in the following order Bacillus licheniformis (MTCC 530) > Pseudomonas aeruginosa (MTCC 2453) > Bacillus subtilis (MTCC 441) >, Pseudomonas fluorescens (MTCC 103) > Bacillus mycoides (MTCC 7343) > Escherichia coli (MTCC 739) > Pseudomonas putida (MTCC 1654) with zone of inhibition of 27.67 ± 0.33 mm diameter in B. licheniformis (MTCC 530). Qualitatively, the ethanol extract contains flavonoids, tannins and alkaloids. The results of FTIR analysis confirmed the presence of R-CH2-OH groups, aromatics, C-N stretching amine and NH stretching secondary amine. One way ANOVA and Tukey tests statistically justify the data (p ≤ 0.05).

Conclusions

All the tested leaf extracts showed promising antibacterial activity against both gram positive and gram negative bacteria. Phytochemical screening and FTIR analysis revealed the presence of tannins, alkaloids, R-CH2-OH groups, aromatics and flavonoids in ethanolic leaf extract qualitatively and these compounds could be responsible for antibacterial property of leaf extracts of C. album.
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Metadata
Title
Antibacterial efficacy of leaf extracts of Combretum album Pers. against some pathogenic bacteria
Authors
Sunanda Burman
Kuntal Bhattacharya
Devaleena Mukherjee
Goutam Chandra
Publication date
01-12-2018
Publisher
BioMed Central
Published in
BMC Complementary Medicine and Therapies / Issue 1/2018
Electronic ISSN: 2662-7671
DOI
https://doi.org/10.1186/s12906-018-2271-0

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