Sari SR, Wardhani R, Umar F, Husain DR, Iwansyah AC. Antibacterial activity of Shallots (
Allium xwakegi Araki.) cultivars in Palu Valley against
Salmonella Typhi ATCC 27870 through
in vitro and in silico evaluation.
IRANIAN JOURNAL OF MICROBIOLOGY 2024;
16:208-218. [PMID:
38854984 PMCID:
PMC11162162 DOI:
10.18502/ijm.v16i2.15354]
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Abstract
Background and Objectives
Shallots, recognized for their minimal toxicity, cost-effectiveness, and widespread availability, are increasingly considered a viable source of biological activity. This study evaluates the antibacterial efficacy of a specific shallot cultivar from Palu Valley, Indonesia, against Salmonella typhi, the pathogen responsible for typhoid fever.
Materials and Methods
Utilizing thin-layer chromatography (TLC-bioautography) and gas chromatography-mass spectroscopy (GC-MS), the study identifies active compounds in shallot ethanol extract and employs molecular docking to assess interactions between receptors and ligands.
Results
Findings indicate significant antibacterial activity, with a notable inhibition zone diameter of 31.5 mm at spot Rf 0.28 in TLC bioautography and an optimum concentration of 2% yielding an average clear zone diameter of 28.27 mm in the agar diffusion test. GC-MS analysis reveals 41 compounds, predominantly dodecanoic acid and 1,2,3-propanetriyl ester. Additionally, molecular docking reveals the lowest binding affinity (-7.3 kcal/mol) for Ergost-8-En-3-Ol, 14-Methyl-, (3.Beta,5. Alpha.) against DNA gyrase.
Conclusion
This study confirms Palu Valley shallot extract's potent antibacterial effect against Salmonella typhi, highlighting its therapeutic potential.
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