Determinación de las propiedades físicas, composición química y evaluación de la actividad biológica y antioxidante del aceite esencial de la especie Ocotea quixos Kosterm de la provincia de Morona Santiago.

Abstract

The essential oil of Ocotea quixos was obtained by hydrodistillation. The chemical composition of the essential oil was determined by gas chromatography coupled with mass spectrometry CG/EM and the flame ionization detector CG/FID. The biological activity was evaluated by broth microdilution method and the antioxidant activity by two spectrophotometric methods: ABTS+- assay, and the DPPH method. Oil physical properties were also determined which has a density of 0.927 g / cm3, refractive index of 1.5037 nD and optical activity + 3.683 °. Forty-five compounds were identified representing (90,50%) in the San Luis Community, (90,10%) in the Juyukamentsa Community, (91,16%) in the Wapú Community of the essential oil. The most representative components were: Methyl cinnamate-E (26,07%), 1,8-Cineole (34,38%), Caryophyllene-E (14,87%). The essential oil has not antibacterial activity against bacterial strains thus were not inhibited at the doses tested. The essential oil of this species do not showed antioxidant activity at various concentrations evaluated.