Antimicrobial activity of some essential oils against Streptococcus agalactiae, an important pathogen for fish farming in Brazil. Issue 5 (3rd September 2018)

• Record Type: Journal Article
• Authors: Majolo, Cláudia; Pilarski, Fabiana; Chaves, Francisco Célio Maia; Bizzo, Humberto Ribeiro; Chagas, Edsandra Campos
• Is Part Of: Journal of essential oil research. Volume 30:Issue 5(2018)
• Page Start: 388
• Page End: 397
• Publication Date: 2018-09-03
• Subjects: Medicinal plants -- essential oil composition -- antimicrobial activity -- group B Streptococcus; Essences and essential oils -- Periodicals; Oils, Volatile -- Periodicals; Plant Oils -- Periodicals; 547.71
• DOI: 10.1080/10412905.2018.1487343
• Languages: English
• ISSNs: 1041-2905

Abstract

ABSTRACT: The antimicrobial activity of the essential oils from Lippia alba, Lippia sidoides, Mentha piperita, Ocimum gratissimum and Zingiber officinale was tested against Streptococcus agalactiae . The major compounds in the oils, identified by gas chromatography and mass spectrometry (GC/MS), were geranial (25.4%), neral (16.6%) and caryophyllene oxide (16.0%) in L. alba ; thymol (76.6%), p -cymene (6.3%) and β-caryophyllene (5.0%) in L. sidoides ; menthol (30.5%), menthyl acetate (14.6%), pulegone (14.2%) and menthone (12.9%) in M. piperita ; eugenol (43.3%), 1, 8-cineole (28.2%) and β-selinene (5.5%) in O. gratissimum ; and geranial (23.2%), neral (16.7%) and 1, 8-cineole (15.8%) in Z. officinale . All essential oils evaluated showed bactericidal action against S. agalactiae with minimum inhibitory concentration (MIC) ranging from 312.5–2, 500 μg mL −1 and minimum bactericidal concentration (MBC) ranging from 416.7–2, 500 μg mL −1 . In this study, L. sidoides essential oil showed the better results against S. agalactiae .