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In vitro antibacterial activity of Eurycoma longifolia jack (Tongkat ali) root extract

Faisal, Ghasak Ghazi and Najmuldeen, Ghazi Faisal and Zakaria, Siti Mastura (2015) In vitro antibacterial activity of Eurycoma longifolia jack (Tongkat ali) root extract. The International Medical Journal Malaysia, 14 (1). pp. 77-81. ISSN 1823-4631

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Abstract

Introduction: Currently, researchers are aiming to explore herbal plants to replace synthetic drugs because herbal plants contain high active compounds and fewer side effects. Our study was done to determine the antibacterial activity of Eurycoma longifolia Jack (E. longifolia) root using ethanol based extract. Methods: Five types of pathogenic bacterial strains were used; Gram-positive (Staphylococcus aureus and Bacillus cereus) and Gram-negative (Escherichia coli, Salmonella typhi and Pseudomonas aeruginosa). Disc diffusion assay and Minimum Inhibitory Concentration (MIC) tests were used to determine the inhibition zone and turbidity of suspension which reflects the antibacterial activity of the extract. Results: The ethanolic extract of E. longifolia Jack root extract showed positive results against Gram-positive bacteria (S. aureus and B. cereus) and Gramnegative (S. typhi). B.cereus and S.typhi showed inhibition zone values of 11.76mm and 14.33mm at the extract concentration of 150mg/ml that were higher than the positive control values (9.00, 12.67mm) respectively. However, E. coli and P. aeruginosa did not show any inhibition by the ethanol-based extract. Conclusion: From the results we can conclude that E.Longifolia root extract possesses antibacterial activity that can be further explored to produce new medicinal products.

Item Type: Article (Journal)
Additional Information: 6388/43526
Uncontrolled Keywords: Eurycoma longifolia Jack, antibacterial, root extract
Subjects: R Medicine > R Medicine (General)
R Medicine > RB Pathology
Kulliyyahs/Centres/Divisions/Institutes: Kulliyyah of Dentistry
Depositing User: Assoc.Prof Ghasak Ghazi Al-Atrakchi
Date Deposited: 25 Jun 2015 10:03
Last Modified: 03 Aug 2017 16:28
URI: http://irep.iium.edu.my/id/eprint/43526

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