Inhibitory effects of propolis and essential oils on oral bacteria

  • Zoran Tambur Faculty of Stomatology, Pančevo, Univeristy Busines Academy in Novi Sad, Serbia
  • Biljana Miljković-Selimović University of Niš Faculty of Medicine, Niš, Serbia
  • Dolores Opačić Military Medical Academy, Belgrade, Serbia
  • Branislava Vuković Faculty of Stomatology, Pančevo, Univeristy Busines Academy in Novi Sad, Serbia
  • Adam Malešević Faculty of Stomatology, Pančevo, Univeristy Busines Academy in Novi Sad, Serbia
  • Luka Ivančajić City Institute of Public Health, Belgrade, Serbia
  • Ema Aleksić Faculty of Stomatology, Pančevo, Univeristy Busines Academy in Novi Sad, Serbia
Keywords: propolis, essential oils, oral cavity bacteria, antibacterial activity

Abstract

Introduction: Propolis is a natural composite balsam. In the past decade, propolis has been extensively investigated as an adjuvant for the treatment of periodontitis. This study aimed to investigate antimicrobial activities of propolis solutions and plant essential oils against some oral cariogenic (Streptococcus mutans, Streptococcus mitis, Streptococcus sanguis, Lactobacillus acidophilus) and periodontopathic bacteria (Actinomyces odontolyticus, Eikenella corrodens, Fusobacterium nucleatum).

Methodology: Determination of the minimum inhibitory concentration (MIC): The antimicrobial activity of propolis and essential oils was investigated by the agar dilution method. Serial dilutions of essential oils were prepared in plates, and the assay plates were estimated to contain 100, 50, 25 and 12.5 µg/mL of active essential oils. Dilutions for propolis were 50, 25, 12.5 and 6.3 µg/mL of active propolis solutions.

Results: Propolis solutions dissolved in benzene, diethyl ether and methyl chloride, demonstrated equal effectiveness against all investigated oral bacteria (MIC=12.5 µg/mL). Propolis solution dissolved in acetone displayed MIC of 6.3 µg/mL only for Lactobacillus acidophilus. At the MIC of 12.5 µg/mL, essential oils of Salvia officinalis and Satureja kitaibelii were effective against Streptococcus mutans and Porphyromonas gingivalis, respectively. For the latter, the MIC value of Salvia officinalis was twice higher.

Conclusions: The results indicate that propolis and plant essential oils appear to be a promising source of antimicrobial agents that may prevent dental caries and other oral infectious diseases.

Published
2021-07-31
How to Cite
1.
Tambur Z, Miljković-Selimović B, Opačić D, Vuković B, Malešević A, Ivančajić L, Aleksić E (2021) Inhibitory effects of propolis and essential oils on oral bacteria. J Infect Dev Ctries 15:1027-1031. doi: 10.3855/jidc.14312
Section
Brief Original Articles