Essential oil

Hydrophobic liquid containing volatile aroma compounds from plants

Essential oils, volatile oils, ethereal oils or aetheroleum are types of oils composed of hydrophobic volatile organic compounds, usually in liquid form, obtained from plant material, such as oil of clove from clove. An essential oil is "essential" in the sense that the oil contains the fragrance or "essence" of that plant. The term "essential" used here does not indicate that it is nutritionally required in the diet, as with essential amino acid or essential fatty acid.

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