SciELO - Scientific Electronic Library Online

 
vol.41 número4Echinococcus granulosus: comparación biológica de aislados de bovinos de regiones endémicas de Argentina y EspañaEl té de tilo como vehículo potencial de esporas de Clostridium botulinum en la transmisión del botulismo infantil índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Articulo

Indicadores

  • No hay articulos citadosCitado por SciELO

Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google

Bookmark


Revista argentina de microbiología

versión On-line ISSN 1851-7617

Resumen

LACIAR, A.; VACA RUIZ, M. L.; CARRIZO FLORES, R.  y  SAAD, J. R.. Antibacterial and antioxidant activities of the essential oil of Artemisia echegarayi Hieron. (Asteraceae). Rev. argent. microbiol. [online]. 2009, vol.41, n.4, pp. 226-231. ISSN 1851-7617.

Artemisia echegarayi Hieron. (Asteraceae) is commonly known in Argentina as “ajenjo”. Many studies report high efficacy of essential oils against food-borne pathogenic bacteria. The antimicrobial activity and minimal inhibitory concentration of A. echegarayi essential oil were evaluated against seven bacterial species of significant importance in food hygiene, by using the disc diffusion assay and the micro-well dilution method, respectively. Volatile components of the extract were analyzed by gas chromatography-mass spectrometry and major components were determined. Furthermore, the essential oil was tested for its antioxidant activity. The essential oil inhibited the growth of gram-positive and gram-negative tested bacteria, with the exception of Proteus mirabilis. A. echegarayi essential oil presented the lowest minimal inhibitory concentration against Listeria monocytogenes and Bacillus cereus. Two terpenes, thujone and camphor, were identified from this essential oil as the principal constituents responsible for antibacterial activity. The oil showed a free radical scavenging activity equivalent to 50% of the reference compound. These preliminary studies showed promising results since this essential oil may provide an alternative to promote its use as a natural food additive.

Palabras llave : Artemisia echegarayi; Essential oil; Antibacterial activity; Antioxidant activity.

        · resumen en Español     · texto en Inglés     · pdf en Inglés