Abstract Title:

Antibacterial Activities of Clove (Syzygium aromaticum) Extracts Against Three Food Borne Pathogens: Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa.

Abstract Source:

Mymensingh Med J. 2019 Oct ;28(4):779-791. PMID: 31599241

Abstract Author(s):

S Mostaqim, S K Saha, U Hani, S K Paul, M Sharmin, S Basak, S A Begum, U Salma, M S Shahabuddin

Article Affiliation:

S Mostaqim


Evaluation of the in vitro antibacterial activity of aqueous and ethanolic extracts isolated from Clove (Syzygium aromaticum) buds against three food borne pathogens, gram-positive Staphylococcus aureus and gram-negative Escherichia coli&Pseudomonas aeruginosa. This interventional study was carried out during the period of July 2018 to June 2019 in the Department of Pharmacology and Therapeutics with the collaboration of Department of Microbiology, Mymensingh Medical College, Mymensingh, Bangladesh. The antibacterial activity was tested at different concentrations of both extracts of spice by using disc diffusion&broth dilution method. The extracts were prepared by using solvents aqueousðanol. The test microorganisms were also tested for their activity against a standard antibiotic Gentamicin (80mg) by broth dilution method and the result was compared with that of Aqueous and Ethanolic extracts. Aqueous and ethanolic extracts of clove had inhibitory activity against the test bacteria. Among different concentrations of the ACE, 500μg/ml&above concentration showed inhibitory effect against Staphylococcus aureus&Escherichia coli and 700μg/ml&above concentration showed inhibitory effect against Pseudomonas aeruginosa. In case of ECE, 500μg/ml&above concentration showed inhibitory effect against aforesaid bacteria. In disc diffusion method, S. aureus was found to be most susceptible to ACE (30.5mm)&Pseudomonas aeruginosa was found to be most susceptible to ECE (38mm). Minimum inhibitory concentrations (MIC) of ECE were lower than ACE for the test bacteria except Staphylococcus aureus where MICs of ACE&ECE were the same. This result was also compared against a standard antibiotic Gentamicin where the MICs of Gentamicin were lower in comparison to MICs of ACE&ECE. The present study showed that aqueous and ethanolic extracts of Clove demonstrated antibacterial effects against food borne pathogens.

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