Antibacterial screening of Phoenix dactylifera L. (Date palm) seed extracts on some bacterial isolates associated with dental caries
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Date
2020
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Publisher
Faculty of Biological Sciences, University of Nigeria, Nsukka, Nigeria.
Abstract
Dental diseases refer to conditions of deterioration and disintegration of the oral cavity due to the
activities of pathogenic microbes. This study was carried out to determine the antibacterial activity of
aqueous and ethanol extracts of Phoenix dactylifera L. (Date palm) seed on selected bacteria isolates
associated with dental caries namely Staphylococcus aureus, Streptococcus mutans and
Lactobacillus casei. Bioactive components of the seed were extracted using water and ethanol as
solvents. The antibacterial activity of the extracts was examined by agar well diffusion method. The
minimum inhibitory and bactericidal concentrations (MIC and MBC) were also determined using
standard methods. All extracts were active against the tested isolates at the concentrations examined.
L. casei was the most susceptible organism followed by S. mutans. S. aureus was the least
susceptible. Ethanolic extract was more effective than aqueous extract at all the concentrations tested
in the study. The MIC of aqueous and ethanolic extracts was 20 mg/ml while the MBC was 80 mg/ml
respectively against all the bacterial isolates tested. It can be concluded that the aqueous and
ethanolic extracts of the seed possess antibacterial potential against all the test organisms and could
be useful in treatment of dental diseases and other related diseases caused by the bacteria isolates
tested in the study.