2015, Number 4
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Rev Cubana Farm 2015; 49 (4)
Extraction, characterization and antioxidant activity of essential oil from Plectranthus amboinicus L
León MG, Osorio FMR, Torrenegra ME, Gil GJ
Language: Spanish
References: 34
Page: 708-718
PDF size: 155.21 Kb.
ABSTRACT
Objectives: to extract, to characterize and to determine the antioxidant activity of
the essential oil of French Oregano (
Plectranthus amboinicus L) grown in the
northern part of the Department of Bolívar, Colombia.
Methods: essential oil was extracted by distillation and radiation microwaveassisted
hydrodistillation, from the leaves; relative density at 20°C, refractive
index; solubility of the essential oils in ethanol (70% v/v) and optical rotation were
determined. The chemical composition was assessed using gas chromatography/
mass spectrometer. The antioxidant activity was determined using the techniques
of antiradical activity by the DPPH., ABTS.+ and ORAC methods.
Results: yields ranged from 0.05 to 0.78%, depending on the extraction method
used. The results of the test of antioxidant activity showed that the essential oils of
French oregano (
Plectranthus amboinicus L) obtained by both methods of extraction
had promising results; in addition, these oils had high contents of ,oxygenated
monoterpeneswith recognized antioxidant activity, such as carvacrol and thymol.
Conclusions: the essential oil of French oregano (
Plectranthus amboinicus L) is
considered as promising to design products with antioxidant activity.
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