Essential oils are volatile liquids that are physically extracted from plant parts such as seeds, barks, leaves, stems, roots, flowers and fruits. Each essential oil emits its own distinctive scent and is characterised by different chemical properties. These chemicals from the plants are natural and not adulterated or diluted with synthetics.
Depending on the types of the botanical plants, essential oils can be extracted via distillation, expression or solvent extraction.
The method of extraction is selected based on the suitability and the yield of the essential oils from the plants. Incorrect methods or solvent used in extraction may result in destroying the natural chemicals in the plants, compromising on the quality of the essential oils. Also, some extraction methods are cost-ineffective and may results in unaffordable prices of the essential oil. Hence, it is important for the manufacturer or distiller to select an appropriate method of extraction.
Essential oils are commonly extracted via the following methods:
- Steam Distillation
- Cold Pressing (Expression)
- Solvent Extraction
You can learn more about these extraction methods in Common Ways to Extract Essential Oils.