Essential Oil from Psidium cattleianum Sabine (Myrtaceae) Fresh Leaves: Chemical Characterization and in vitro Antibacterial Activity Against Endodontic Pathogens
Pietro Chrystal, Alexandra Cristine Pereira, Cassia Cristina Fernandes, João Matias de Souza, Carlos Henrique Gomes Martins, Júlia Potenza, Antônio E. M. Crotti, Mayker Lázaro Dantas Miranda
Abstract
Endodontic infections result from oral pathogenic bacteria which reach and infect dental pulp, as well as surrounding tissues, through cracks, unrepaired caries and failed caries restorations. This study aims to determine the chemical composition of essential oil from Psidium cattleianum leaves (PC-EO) and to assess its antibacterial activity against endodontic bacteria. Antibacterial activity of PC-EO was evaluated in terms of its minimum inhibitory concentration (MIC) values by the broth microdilution method on 96-well microplates. Bacteria Porphyromonas gingivalis (MIC = 20 g/mL), Prevotella nigrescens (MIC = 62.5 g/mL), Fusobacterium nucleatum (MIC = 12.5 g/mL), Actinomyces naeslundii (MIC = 50 g/mL), Bacteroides fragilis (MIC = 12.5 g/mL), Aggregatibacter actinomycetemcomitans (MIC = 6.25 g/mL) and HIGHLIGHTS Viridiflorol, -caryophyllene, 1,8-cineole and -selinene were the major constituents found in PC-EO.