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All Journal Journal of Coastal and Ocean Sciences
Wiya, Siti Ada
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology Physics

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Sensitivity Test of Pedada (Sonneratia alba) Leaf Extract Against the Growth of Staphylococcus aureus, Escherichia coli, and Aeromonas hydrophila Bacteria Wiya, Siti Ada; Wahyuni, Sri; Mursawal, Asri; Nursyirwani, Nursyirwani
Journal of Coastal and Ocean Sciences Vol. 6 No. 2 (2025): May
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.6.2.114-118

Abstract

Sonneratia alba (Pedada) is one of the potential mangroves as a natural antibacterial because it contains secondary metabolites, such as flavonoids, saponins, steroids, tannins, and terpenoids. This study aimed to determine the inhibitory power of Pedada leaf extract in inhibiting the growth of Staphylococcus aureus, Escherichia coli, and Aeromonas hydrophila. The research method used is experimental, including sample preparation, extraction, and sensitivity tests using the Kirby-Bauer disc method. This study used 100%, 50%, 25%, and 12.5% extract doses, positive control (Oxytetracycline), and negative control (a quade). The results showed that Pedada leaf extract could inhibit the growth of pathogenic bacteria; 100% concentration was the concentration with the widest inhibition zone diameter of S. aureus 15.48 mm, E. coli 13.37 mm, and A. hydrophila 13.88 mm. Based on this study's results, the best extract concentration for inhibiting bacterial growth is 100% concentration
Co-Authors Mursawal, Asri Nursyirwani, Nursyirwani Sri Wahyuni