Avaliação in vitro da sensibilidade do microbioma oral de cães labradores retrievers frente a extratos vegetais

Abstract

The aim of this research was to evaluate the antimicrobial activity in vitro ofspecies extracts on oral microbioma from 12 Labrador retriviers. The plants species are: Anacardium ocidentalis; Harpagophytum procumbens; Momordica charantia L.; Punica granatum; Psidium guajava L.; Stryphnodendron adstringens and Uncaria tomentose. Polar extracts from plant samples was used in this research. The qualitative and quantitative phytochemical assay was performed to classify the main metabolites classes existent. Then was settled the minimal inhibitory concentration of extracts by diffusion test using disco in Brain Heart Infusion Agar. Plants samples concentration used in this test was 250 mg/mL, 125 mg/mL, 62,5 mg/mL, 31,25 mg/mL, 5 mg/mL put on filter paper discos. Next, these discos were transfer to petri dishes with BHI Agar strewed together with saliva content oral microbioma from twelve dogs. After 12 hours of incubation in 32oC was analysed the results of inhibition halo from extract action on microbiome compared to inhibition halos of 0,12% chlorhexidine discos as a control. Variance analyses and Turkey’s test were employed to data interpretation with 5% significance. Punica granatum extract shows a large inhibition halo in concentrations of 250 mg/mL and 125 mg/mL where as, Psidium guajava had a large inhibition halo in concentrations of 250 mg/mL. Extracts from Anacardium ocidentalis, Uncaria tomentosa, Stryphnodendron adstringens, Momordica charantia L., had halos same as 0,12% chlorhexidine control. Under these circumstances, perhaps the antibacterial activity of extractsis associated with the presence of phenolic compounds, condensed tannin and flavonoids as show in phytochemical assay. In conclusion, the results show that oral microbioma from 12 dogs was more sensitivity using Punica granatum and Psidium guajava extacts, in concentrations of 125 mg/mL and 250 mg/mL, camapred to 0,12% chlorhexidine control. For these reasons, is possible see the importance of medicinal plants as a therapeutic resource and an applicability in veterinary odontology.