A process that uses heat to separate the liquid and vaporous molecules from the more fixed or solid components of a substance, specifically the process of vaporizing volatile components so that they may be captured and condensed into a liquid. Also a term used for the condensed liquid of this process. A volatile and aromatic liquid or semi-solid obtained through expression or distillation of a single botanical species. A method used to obtain citrus oils and fruit juices. The expressed or cold pressed essential oils are obtained from the fruit peel, the juices are obtained from the fruit.
Expression yields essential oils which sometimes contain non-volatile components.
A name given to vegetable oils that unlike essential oils, are fatty, dense and non-volatile. Some examples are olive oil, sweet almond oil, apricot kernel oil, sesame oil, and grapeseed oil. A system of health care based on a concept of the whole person as one whose body, mind, spirit, and emotions are in balance with the environment. Often includes conventional and alternative medicines used to treat the body as a whole. Due to its lower concentration of active components, floral waters have been used internally for a variety of maladies.