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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 94, No. 5, 1999, pp. 675-678
Bioline Code: oc99126
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 94, No. 5, 1999, pp. 675-678

 en Antibacterial Activity of Ocimum gratissimum L. Essential Oil
Celso Vataru Nakamura; Tania Ueda-Nakamura; Erika Bando; Abrahão Fernandes Negrão Melo; Díogenes Aparício Garcia Cortez & Benedito Prado Dias Filho

Abstract

The essential oil (EO) of Ocimum gratissimum inhibited Staphylococcus aureus at a concentration of 0.75 mg/ml. The minimal inhibitory concentrations (MICs) for Shigella flexineri, Salmonella enteritidis, Escherichia coli, Klebsiella sp., and Proteus mirabilis were at concentrations ranging from 3 to 12 μg/ml. The endpoint was not reached for Pseudomonas aeruginosa (>=24 mg/ml). The MICs of the reference drugs used in this study were similar to those presented in other reports. The minimum bactericidal concentration of EO was within a twofold dilution of the MIC for this organism. The compound that showed antibacterial activity in the EO of O. gratissimum was identified as eugenol and structural findings were further supported by gas chromatography/mass spectra retention time data. The structure was supported by spectroscopic methods.

Keywords
Ocimum gratissimum - essential oil - eugenol - antimicrobial activity

 
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