How are essential oils defined?

• A. Oils extracted using various forms of distillation from seeds, bark, roots, leaves, wood, and/or resin of plants.
• B. Oils that are dissolved in water to produce fragrance.
• C. Synthetic fragrances produced in laboratories.
• D. Oils obtained by pressing citrus peels only.

Answer: (A)

Essential oils are concentrated, volatile aromatic compounds drawn from plant materials. They come from parts such as leaves, bark, roots, seeds, wood, or resin, and are typically obtained through distillation methods like steam distillation (often called hydro-distillation) that capture the plant’s scent compounds. Some oils, especially those from citrus, can be produced by cold pressing, but they still represent plant-derived aromas rather than synthetic fragrances or water-based scents. This combination of plant source and extraction method is what defines an essential oil. Options that describe water-based fragrances, synthetic fragrances, or citrus-only pressing don’t capture the full, true definition.