ABSTRACT
Cinnamon is a common spice that has been used for several centuries by different cultures around the world. Like most other essential oils, cinnamon oils can be extracted using a large array of techniques. Such techniques and methods can be classified into two broad classes: conventional and advanced methods. Distillation is one of the oldest, simplest, and most widespread methods of extracting cinnamon essential oils, especially at commercial levels. In the cinnamon bark or leaf hydrodistillation process, water vapors are used as solvent driving, at boiling temperature, the cinnamon essential oil molecules. Supercritical fluid extraction is one of the innovative techniques used for cinnamon oil and other essential oil extraction. Two other relatively newer methods used to extract cinnamon oil mainly for small-scale and laboratory analyses are ultrasound-assisted extraction and microwave-assisted extraction.
