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Sogandi
Department of Pharmacy, Faculty of Pharmacy, Universitas 17 Agustus 1945 Jakarta
Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences

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Molecular Identification of Endophytic Bacteria Isolated From Allium cepa L. Waste as Antibiofilm Agent Against S.mutans Ekajayanti Kining; Dian Firdiani; Sogandi; Muh. Achyar Ardat
Jurnal Biodjati Vol 10 No 1 (2025): May
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/biodjati.v10i1.44587

Abstract

Streptococcus mutans is a key contributor to dental caries due to its ability to form resilient biofilms. Endophytic bacteria are a promising source of natural antibiofilm agents. This study aimed to isolate and characterize endophytic bacteria from red onion (Allium cepa L) waste with potential antibiofilm activity against S. mutans. This research employed an exploratory laboratory design with descriptive and quantitative approaches. Morphological and Gram-staining analyses were conducted alongside molecular identification through 16S rRNA sequencing. Antibacterial and antibiofilm assays were performed to evaluate the biological activity of isolate EA1. Absorbance values from biofilm inhibition and degradation tests were analyzed using descriptive statistics to calculate inhibition percentages. Isolate EA1 exhibited strong biofilm degradation (77% inhibition), moderate inhibition of biofilm formation (53%), and relatively lower antibacterial activity (30% growth inhibition). Molecular analysis confirmed its identity as a member of the Enterobacter genus, closely related to E. tabaci and E. asburiae. EA1 holds significant potential as a source of novel antibiofilm compounds for controlling S. mutans. Further investigation is needed to characterize its active metabolites and evaluate its clinical applicability.
Co-Authors Dian Firdiani Ekajayanti Kining Muh. Achyar Ardat