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Antibacterial properties of selected Malaysian Tualang honey against Pseudomonas aeruginosa and Streptococcus pyogenes

Authors
  • Al-Kafaween, Mohammad Abdulraheem1
  • Al-Jamal, Hamid Ali Nagi1
  • Hilmi, Abu Bakar Mohd1
  • Elsahoryi, Nour Amin2
  • Jaffar, Norzawani1
  • Zahri, Mohd Khairi1
  • 1 Department of Biomedicine, Faculty of Health Sciences, Universiti Sultan Zainal Abidin, Terengganu, Malaysia
  • 2 Department of Nutrition, Faculty of Pharmacy and Medical Sciences, University of Petra, Amman, Jordan
Type
Published Article
Journal
Iranian Journal of Microbiology
Publisher
Tehran University of Medical Sciences
Publication Date
Dec 01, 2020
Volume
12
Issue
6
Pages
565–576
Identifiers
DOI: 10.18502/ijm.v12i6.5031
PMID: 33613911
PMCID: PMC7884280
Source
PubMed Central
Keywords
Disciplines
  • Original Article
License
Unknown

Abstract

Background and Objectives: Tualang honey (TH) is a Malaysian multifloral jungle honey. In recent years, there has been a marked increase in the number of studies published in medical databases regarding its potential health benefits. The study aimed to investigate the effect of TH against Pseudomonas aeruginosa and Streptococcus pyogenes . Materials and Methods: The effect of TH on both bacteria was investigated using MIC, MBC, growth curve, time-kill curve, scanning electron microscopy (SEM) and RT-qPCR. Results: The MIC of TH against P. aeruginosa and S. pyogenes was 18.5% (w/v) and 13% (w/v) respectively and MBC was 25% (w/v) for both bacteria. Spectrophotometric readings of at least 90% inhibition yielded MIC90 values of TH, 18.5% (w/v) and 15% (w/v) for P. aeruginosa and S. pyogenes respectively. A time–kill curve demonstrated a bactericidal with a 4-log reduction estimated within 8 hours. Using SEM, loss of structural integrity and marked changes in cell shape were observed. RT-qPCR analysis showed that TH reduced the pattern of gene expression in both bacteria, with a trend toward reduced expression of the virulence genes of interest. Conclusion: This study suggests that TH could potentially be used as an alternative therapeutic agent for microbial infection particularly against these two organisms.

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