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Essential oils often have an odor and are therefore used in food flavoring and perfumery. They are usually prepared by fragrance extraction techniques (such as distillation, cold pressing, or Solvent extraction). Essential oils are distinguished from aroma oils (essential oils and aroma compounds in an oily solvent), infusions in a vegetable ...
Essential oils are also known as volatile oils, ethereal oils, aetheroleum, or simply as the oil of the plant from which they were extracted, such as oil of clove. An essential oil is essential in the sense that it contains the essence of the plant's fragrance —the characteristic fragrance of the plant from which it is derived. [ 1 ]
These oils are extracted from plants that are cultivated solely for producing oil-based biofuel. [note 5] These, plus the major oils described above, have received much more attention as fuel oils than other plant oils. Copaiba, an oleoresin tapped from species of genus Copaifera. Used in Brazil as a cosmetic product and a major source of ...
The word 'attar' is believed to have been derived from the Persian word itir, [3] which is in turn derived from the Arabic word 'itr (عطر), meaning 'perfume'. [4] [5]The earliest recorded mention of the techniques and methods used to produce essential oils is believed to be that of Ibn al-Baitar (1188–1248), an Al-Andalusian (Muslim Iberia) physician, pharmacist and chemist.
Essential oils are usually extracted by distillation. Maceration is also used as a means of extracting essential oils. [5] In this process, used, for example, to extract the onion, garlic, wintergreen and bitter almond essential oil, the plant material is macerated in warm water to release the volatile compounds in the plant.
Similarly, the fruit juice and oils can be used in the treatment of liver disease, gastrointestinal disorders, chronic wounds or other dermatological disorders. [86] Hoodia gordonii: Hoodia: The plant is traditionally used by Kalahari San (Bushmen) to reduce hunger and thirst. It is marketed as an appetite suppressant. [87] Hydrastis canadensis ...