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Comparative evaluation of biofilm suppression by plant extracts on oral pathogenic bacteria

Geethashri Anand, Ravishankar Basaviah, Veena Shetty.


Microbial colonization as biofilm is one of the reasons for the emergence of drug resistant strains. In the oral cavity, drug resistant strains limit the efficacy of oral hygiene practices. Enterococcus faecalis and Staphylococcus aureus have been reported as drug resistant bacteria and producing oral biofilms in oral cavity. In this study we demonstrate the efficacy of aqueous extract of Azadirachta indica, Mangifera indica, Piper betel and Pepper nigrum for antibiofilm activity against E. faecalis and S. aureus. The aqueous extracts were obtained by cold percolation method. The antibiofilm activity of plants extract was evaluated at 30, 15 and 7.5 mg/ml concentration. The percentage yield of extract was maximum in P. nigrum. The aqueous extract of A. indica significantly suppressed E. faecalis and S. aureus biofilm at 7.5 mg/ml at p

Key words: Oral pathogens biofilm, Medicinal plants, Enterococcus faecalis, Staphylococcus aureus, Azadirachta indica, Mangifera indica, Piper betel, Piper nigrum

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