Obtenção de um dentifrício contendo extrato seco por aspersão padronizado de Libidibia ferrea com atividade antimicrobiana contra patógenos bucais

Abstract

Libidibiaferreaknownpopularlyas “Jucá”or“pau-ferro”isused in traditional medicineto treatbruises, breathing problems, anemia anddiabetes.Pharmacological studiesdemonstrateanti-inflammatory action, anti-ulcer, antimicrobialandanticarcinogenicagainst pathogensin the oral cavity. Suchspeciesarecatalogedin the National FormularyandHerbal Medicineslistedin the National Listof Medicinal Plantsof Interestto SUS. The aim of this workis obtain a dentifriceprepared with a spray dried extract of LibidibiaferreaMartiusvar. ferreapresented antimicrobial activityagainstoral pathogens. Firstly the studies werecarried out with spraydried extractobtained from thebarkand seedless fruitofL.ferrea and it was identified theminimum inhibitoryconcentration (MIC) of both dried extracts evaluated. The studiesdemonstrated thatthebark spray dried extractshowed betterantimicrobial activity, being chosenfor incorporation inplasticsformulations. Thedosage formsselectedfor dry extractincorporation were gel and pastes, the proportionsof 2.5%and 5% (w/w) in the geland5% to10% (w / w) in the paste,boththe pharmaceuticalforms it was obtainedwithcarboxymethylcellulose. The antimicrobial activityof allformulations was evaluated against the strainsof Streptococcusoralis, Streptococcus salivarius, Streptococcus mutans, Lactobacillus caseiand Candidaalbicansemploying themicrodilution method. The results showedthatall formulationsoftoothpastescontainingdryextractshowedantimicrobial activity againstoral pathogensevaluated, and thisactivity was higher ingel formulationscontaining 2.5% of DEalsogreater than thedry extractwhen assessedin isolation, demonstratingpossibleactivity of somecomponentsof the formulations, which when analyzed separately, it was verified thatthesodium lauryl sulfatewasthe onlypharmaceuticaladjuvantto demonstrateantimicrobial activity by diffusion methodon solid medium, withinhibition zonesrangingfrom 12 to 28mm.Thus, the study demonstrates thatthere may be asynergism betweenpharmaceuticaladjuvant and substances present into the L. ferrea spray dried extractused in this work.