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2019, Number 1

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Rev Cubana Farm 2019; 52 (1)

Extraction, description and antioxidant activity of essential oil from Eucalyptus globulus Labill

Torrenegra AME, Granados CC, León MG

Language: Spanish
References: 20
Page: 1-12
PDF size: 497.07 Kb.


ABSTRACT

Introduction: Humans have used plants as sources of natural medicines and it is known that nowadays approximately two-thirds of the population in developing countries uses them for the treatment of diseases. Medicinal plants are characterized by having active substances that can modify the functioning of biological systems by altering them or restoring organic functional balance.
Objectives: To evaluate the in vitro antioxidant activity of the Eucalyptus globulus Labill´s essential oil grown in the municipality of Pamplona-Norte de Santander, Colombia.
Methods: Essential oil was extracted from the leaves by hydrodistillation and assisted hydrodistillation by radiation with microwave. It was determined a relative density to 20°C, refractive index, solubility of the essential oils in ethanol (70% v/v) and optical rotation. Chemical composition was assessed using gas chromatography/mass spectrometer. The antioxidant activity was determined using the techniques of anti-free radicals activity by DPPH .and ABTS.+ methods.
Results: Yields ranged from 0.72 to 1.21% depending on the extraction method used. The results of the test of antioxidant activity showed that the essential oils of Eucalyptus globulus Labill obtained by both methods of extraction had promising results; in addition, these oils presented high levels of monoterpenes with recognized antioxidant activity, such as eucalyptol.
Conclusions: The essential oil of Eucalyptus globulus Labill is considered as promising to design master products with antioxidant activity.


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