Resumo

HUAYTALLA ALEMAN, Richard M et al. In vitro Inhibitory effect of ethanolic propolis extract at 15% and 30% against strains of Lactobacillus acidophilus. Rev. Estomatol. Herediana [online]. 2018, vol.28, n.1, pp.36-43. ISSN 1019-4355.  http://dx.doi.org/https://doi.org/10.20453/reh.v28i1.3281.

Objectives: To determine the efficacy in vitro of the antibacterial inhibitory effect of the ethanolic extracts of propolis in comparison to the chlorhexidine gluconate against strains of the Lactobacillus acidophilus. Material and methods: The type of investigation was experimental, prospective, analytical and longitudinal. It took place in the laboratory of microbiology at the private university Norbert Wiener during the year 2016. The population consisted of strains of Lactobacillus acidophilus commercial use and the sample consisted of 30 crops of this microorganism in petri plates with blood agar base and where disks embedded paper was placed with ethanol propolis extracts of 15% and 30%, chlorhexidine gluconate of 0.12% as a positive control and alcohol of 70% as a negative control. Underconditions of anaerobiosis at 30°C. Results: The obtained that the concentration at 15% and 30% ethanolicpropolis extract has a higher average effect inhibitor 8.15 mm and 11.75 mmat 48 hours and 11.40 mm and 14.25 mm at 72 hours respectively. In relation to the average inbition halo produced by the chlorhexidine gluconate 0.12% at 48 and 72 hours, which was 6.55 mm and 8.00 mm. Conclusions: The ethanolic extract of propolis30% is more effective in vitro than 0.12% chlorhexidine for the control of Lactobacillus acidophilus.

Palavras-chave : chlorhexidine; dental caries; Lactobacillus acidophilus; propolis.

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