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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 ...
An essential oil is a concentrated hydrophobic liquid containing volatile (easily evaporated at normal temperatures) chemical compounds from plants.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.
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 ...
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.
The name nard is derived from Latin nardus, from Ancient Greek νάρδος (nárdos). This word may ultimately derive either from Sanskrit नलद (nálada 'Indian spikenard'), or from Naarda, an ancient Assyrian city (possibly the modern town of Dohuk, Iraq). [4] The "spike" in the English name refers to the inflorescence or flowering stem ...
The use of the name probably originated from Captain James Cook's description of one of these shrubs that he used to make an infusion to drink in place of tea. [ 35 ] The commercial tea tree oil industry originated in the 1920s when Australian chemist Arthur Penfold investigated the business potential of a number of native extracted oils; he ...
This category includes all essential oils such as Tea tree oil, obtained by distillation from plant materials. It does not include specific constituents of those oils (e.g., limonene)- these should be listed under the appropriate sub-category of Category:Organic compounds
Chemical composition of essential oils could be affected by herbicides if the original plants are cultivated versus wild-harvested. [26] [27] Some oils can be toxic to some domestic animals, with cats being particularly prone. [28] Most oils can be toxic to humans as well. [29]