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Eugenol / ˈ j uː dʒ ɪ n ɒ l / is an allyl chain-substituted guaiacol, a member of the allylbenzene class of chemical compounds. [2] It is a colorless to pale yellow, aromatic oily liquid extracted from certain essential oils especially from clove , nutmeg , cinnamon , basil and bay leaf .
Oil of clove, also known as clove oil or eugenol, is an essential oil extracted from the clove plant, Syzygium aromaticum. [1] [2] Clove oil is commonly used in aromatherapy and for flavoring food, tea, and toothpaste. [2] [3] In alternative medicine, it may be used as a topical medication to relieve toothache.
The compound eugenol is responsible for most of the characteristic aroma of cloves. Eugenol comprises 72–90% of the essential oil extracted from cloves, and is the compound most responsible for clove aroma. [14] [53] Complete extraction occurs at 80 minutes in pressurized water at 125 °C (257 °F). [54]
Guaiacol is a precursor to various flavorants, such as eugenol. [15] An estimated 85% of the world's supply of vanillin comes from guaiacol. Because consumers tend to prefer natural vanillin to synthetic vanillin, methods such as microbial fermentation have been adopted.
Vanillin was first synthesized from eugenol (found in oil of clove) in 1874–75, less than 20 years after it was first identified and isolated. Vanillin was commercially produced from eugenol until the 1920s. [37] Later it was synthesized from lignin-containing "brown liquor", a byproduct of the sulfite process for making wood pulp. [12]
The internet is well-populated with so-called benefits of cloves, honey and orange. But we weren’t able to find much real research to show that the combination of these things could boost ...
Acetyleugenol is a phenylpropanoid compound found in cloves.It is the second in abundance to the related compound eugenol in certain extract preparations. [1] [2] Like eugenol, its found in several plants such as Acacia nilotica and Piper betle [3] [4] [5] and has similar antibacterial and antifungal properties on C. albicans and S. mutans. [6]
Liquid (eugenol, ~85%, olive oil ~15%) ZOE impression pastes are sold in two separate tubes. The first tube contains zinc oxide and vegetable or mineral oil, while the second tube contains eugenol and rosin. The vegetable or mineral oil acts as a plasticizer and helps to counteract the irritant action of eugenol.