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VOLUME 18 , ISSUE 5 ( May, 2017 ) > List of Articles

RESEARCH ARTICLE

Antimicrobial Potential of Plant Extracts and Chemical Fractions of Sideroxylon obtusifolium (Roem. & Schult.) T.D. Penn on Oral Microorganisms

Thaíse PD Sampaio, Nathália AO Cartaxo-Furtado, Ana CD de Medeiros, Harley S Alves, Pedro L Rosalen, Jozinete V Pereira

Citation Information : Sampaio TP, Cartaxo-Furtado NA, de Medeiros AC, Alves HS, Rosalen PL, Pereira JV. Antimicrobial Potential of Plant Extracts and Chemical Fractions of Sideroxylon obtusifolium (Roem. & Schult.) T.D. Penn on Oral Microorganisms. J Contemp Dent Pract 2017; 18 (5):392-398.

DOI: 10.5005/jp-journals-10024-2053

Published Online: 00-05-2017

Copyright Statement:  Copyright © 2017; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim

The aim of this study is to evaluate the in vitro antimicrobial activity of plant extracts and chemical fractions of Sideroxylon obtusifolium T.D. Penn on Streptococcus mutans, Streptococcus oralis, Streptococcus salivarius, Streptococcus parasanguinis, and Candida albicans as well as to identify the chemical classes found in the bioactive extracts possessing better activity.

Materials and methods

Freeze-dried hydroalcoholic extracts of the bark and leaves (LC and LF respectively) and ethanol extracts of bark and leaves (EC and EF respectively) of S. obtusifolium were assessed for antimicrobial potential by determining the minimum inhibitory concentration (MIC), minimum bactericidal concentration, and minimum fungicidal concentration (MFC). The tests were performed by microdilution method (in triplicate) in three independent experiments. Phytochemical characterization was performed by quantification of total polyphenols, total flavonoids, and condensed tannins.

Results

The EC extract presented weak antimicrobial potential on the growth of S. mutans (MIC = 1000 µg/mL); all extracts showed moderate inhibitory activity on the growth of C. albicans (MIC = 500 µg/mL). The dichloromethane and n-butanol fractions of LF extracts showed moderate growth inhibitory activity (MIC = 250 µg/mL) on C. albicans and fungicide potential (MFC/MIC = 2). The phytochemical characterization revealed a predominance of total polyphenols (EC = 29.23%; LC = 25.98%) and condensed tannins (LC = 38.84%; LF = 17.78%).

Conclusion

The dichloromethane and n-butanol fractions of S. obtusifolium LF extract showed antifungal activity against C. albicans, with the potential for bioprospection of phytocompounds for the treatment of periodontal fungal diseases caused by this microorganism. The effect may be related to phytochemical compounds from the polyphenol and condensed tannin classes.

Clinical significance

Research for new oral microbial disease treatment alternatives in bioactive compounds from medicinal plants is of clinical relevance and scientific interest since many therapeutic antifungal agents do not obtain the effectiveness expected due to microbial resistance, or to adverse effects on human tissues.

How to cite this article

Sampaio TPD, Cartaxo-Furtado NAO, de Medeiros ACD, Alves HS, Rosalen PL, Pereira JV. Antimicrobial Potential of Plant Extracts and Chemical Fractions of Sideroxylon obtusifolium (Roem. & Schult.) T.D. Penn on Oral Microorganisms. J Contemp Dent Pract 2017;18(5):392-398.


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