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Verbenone
Verbenone is a natural organic compound classified as a terpene that is found naturally in a variety of plants. The chemical has a pleasant characteristic odor. Besides being a natural constituent of plants, it and its analogs are insect pheromones. In particular, verbenone when formulated in a long-lasting matrix has an important role in the control of bark beetles such as the mountain pine beetle and the Southern pine bark beetle. Chemistry Verbenone is a monoterpene, to be specific a bicyclic ketone terpene. It is the primary constituent of the oil of Spanish verbena, hence its name; it is also found in the oil of rosemary. It is nearly insoluble in water, but miscible with most organic solvents. Verbenone can be readily prepared synthetically by the oxidation of the more common terpene α-pinene: : Verbenone can then be converted into chrysanthenone through a photochemical rearrangement reaction: : Use for insect control The southern pine beetle (''Dendroctonus fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Verbenone By Oxidation Of Pinene
Verbenone is a natural organic compound classified as a terpene that is found naturally in a variety of plants. The chemical has a pleasant characteristic odor. Besides being a natural constituent of plants, it and its analogs are insect pheromones. In particular, verbenone when formulated in a long-lasting matrix has an important role in the control of bark beetles such as the mountain pine beetle and the Southern pine bark beetle. Chemistry Verbenone is a monoterpene, to be specific a bicyclic ketone terpene. It is the primary constituent of the oil of Spanish verbena, hence its name; it is also found in the oil of rosemary. It is nearly insoluble in water, but miscible with most organic solvents. Verbenone can be readily prepared synthetically by the oxidation of the more common terpene α-pinene: : Verbenone can then be converted into chrysanthenone through a photochemical rearrangement reaction: : Use for insect control The southern pine beetle ('' Dendroctonus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Levoverbenone
Levoverbenone is an expectorant. It is the L-isomer of verbenone Verbenone is a natural organic compound classified as a terpene that is found naturally in a variety of plants. The chemical has a pleasant characteristic odor. Besides being a natural constituent of plants, it and its analogs are insect pheromo .... References External links * Antitussives Enones Enantiopure drugs Monoterpenes Cycloalkenes {{respiratory-system-drug-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chrysanthenone Synthesis
Chrysanthenone (C10H14O) is a terpenoid. It can be produced from its isomer verbenone in a photochemical Photochemistry is the branch of chemistry concerned with the chemical effects of light. Generally, this term is used to describe a chemical reaction caused by absorption of ultraviolet (wavelength from 100 to 400 nm), visible light (400–7 ... rearrangement reaction. : References {{reflist External linksKovats - chrysanthenone Ketones Monoterpenes Cycloalkenes Cyclobutanes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chrysanthenone
Chrysanthenone (C10H14O) is a terpenoid. It can be produced from its isomer verbenone in a photochemical Photochemistry is the branch of chemistry concerned with the chemical effects of light. Generally, this term is used to describe a chemical reaction caused by absorption of ultraviolet (wavelength from 100 to 400 nm), visible light (400–7 ... rearrangement reaction. : References {{reflist External linksKovats - chrysanthenone Ketones Monoterpenes Cycloalkenes Cyclobutanes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alpha-Pinene
α-Pinene is an organic compound of the terpene class, one of two isomers of pinene. It is an alkene and it contains a reactive four-membered ring. It is found in the oils of many species of many coniferous trees, notably the pine. It is also found in the essential oil of rosemary (''Rosmarinus officinalis'') and '' Satureja myrtifolia'' (also known as ''Zoufa'' in some regions). Both enantiomers are known in nature; (1''S'',5''S'')- or (−)-α-pinene is more common in European pines, whereas the (1''R'',5''R'')- or (+)-α-isomer is more common in North America. The racemic mixture is present in some oils such as eucalyptus oil and orange peel oil. Reactivity : Commercially important derivatives of alpha-pinene are linalool, geraniol, nerol, a-terpineol, and camphene. α-Pinene 1 is reactive owing to the presence of the four-membered ring adjacent to the alkene. The compound is prone to skeletal rearrangements such as the Wagner–Meerwein rearrangement. Acids typ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perfume
Perfume (, ; french: parfum) is a mixture of fragrant essential oils or aroma compounds (fragrances), fixatives and solvents, usually in liquid form, used to give the human body, animals, food, objects, and living-spaces an agreeable scent. The 1939 Nobel Laureate for Chemistry, Leopold Ružička stated in 1945 that "right from the earliest days of scientific chemistry up to the present time, perfumes have substantially contributed to the development of organic chemistry as regards methods, systematic classification, and theory." Ancient texts and archaeological excavations show the use of perfumes in some of the earliest human civilizations. Modern perfumery began in the late 19th century with the commercial synthesis of aroma compounds such as vanillin or coumarin, which allowed for the composition of perfumes with smells previously unattainable solely from natural aromatics. History The word ''perfume'' derives from the Latin ''perfumare'', meaning "to smoke through". ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aromatherapy
Aromatherapy is based on the usage of aromatic materials including essential oils and other aroma compounds, with claims for improving psychological and physical well-being. It is offered as a complementary therapy or as a form of alternative medicine, the first meaning alongside standard treatments, the second instead of conventional, evidence-based treatments. Aromatherapists, people who specialize in the practice of aromatherapy, utilize blends of supposedly therapeutic essential oils that can be used as topical application, massage, inhalation or water immersion. There is no good medical evidence that aromatherapy can either prevent, treat or cure any disease. Placebo-controlled trials are difficult to design as the point of aromatherapy is the smell of the products. There is disputed evidence that it may be effective in combating postoperative nausea and vomiting. History The use of essential oils for therapeutic, spiritual, hygienic and ritualistic purposes goes ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbal Tea
Herbal teas, also known as herbal infusions and less commonly called tisanes (UK and US , US also ), are beverages made from the infusion or decoction of herbs, spices, or other plant material in hot water. Oftentimes herb tea, or the plain term ''tea'', is used as a reference to all sorts of herbal teas. Many herbs are used in herbal medicine. Some herbal blends contain actual tea (e.g., the Indian classic masala chai). The term "herbal" tea is often used in contrast to the so-called ''true'' teas (e.g., black, green, white, yellow, oolong), which are prepared from the cured leaves of the tea plant, '' Camellia sinensis''. Unlike true teas (which are also available decaffeinated), most tisanes do not naturally contain caffeine. There are a number of plants, however, that ''do'' contain caffeine or another stimulant, like theobromine, cocaine or ephedrine. Some have the opposite effect, acting as a sedative. Some common infusions have specific names such as , ''mate'' (ye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spice
A spice is a seed, fruit, root, bark, or other plant substance primarily used for flavoring or coloring food. Spices are distinguished from herbs, which are the leaves, flowers, or stems of plants used for flavoring or as a garnish. Spices are sometimes used in medicine, religious rituals, cosmetics or perfume production. For example, vanilla is commonly used as an ingredient in fragrance manufacturing. A spice may be available in several forms: fresh, whole dried, or pre-ground dried. Generally, spices are dried. Spices may be ground into a powder for convenience. A whole dried spice has the longest shelf life, so it can be purchased and stored in larger amounts, making it cheaper on a per-serving basis. A fresh spice, such as ginger, is usually more flavorful than its dried form, but fresh spices are more expensive and have a much shorter shelf life. Some spices are not always available either fresh or whole, for example turmeric, and often must be purchased in ground form. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Organic Compound
In chemistry, organic compounds are generally any chemical compounds that contain carbon-hydrogen or carbon-carbon bonds. Due to carbon's ability to catenate (form chains with other carbon atoms), millions of organic compounds are known. The study of the properties, reactions, and syntheses of organic compounds comprise the discipline known as organic chemistry. For historical reasons, a few classes of carbon-containing compounds (e.g., carbonate salts and cyanide salts), along with a few other exceptions (e.g., carbon dioxide, hydrogen cyanide), are not classified as organic compounds and are considered inorganic. Other than those just named, little consensus exists among chemists on precisely which carbon-containing compounds are excluded, making any rigorous definition of an organic compound elusive. Although organic compounds make up only a small percentage of Earth's crust, they are of central importance because all known life is based on organic compounds. Living t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laurel Wilt
Laurel wilt, also called laurel wilt disease, is a vascular disease that is caused by the fungus ''Raffaelea lauricola'', which is transmitted by the invasive redbay ambrosia beetle, ''Xyleborus glabratus''. The disease affects and kills members of the laurel family. The avocado is perhaps the most commercially valuable plant affected by laurel wilt. Symptoms Symptoms of laurel wilt include wilted stems and leaves and dark streaking in the wood. Laurel wilt can spread in at least two ways: one is via the beetle's natural reproduction and migration. A second way is through the sale and transport of beetle-infested wood, a result of redbay's use as firewood and for outdoor grilling. Life cycle ''R. lauricola'' is symbiotic with ''X. glabratus''. It reproduces clonally and is vertically transmitted originally evolving from a sexual population of mutualists. This combination of traits and ancestral traits is common, however Dreaden et al 2019 finds ''R. lauricola'' to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbalism
Herbal medicine (also herbalism) is the study of pharmacognosy and the use of medicinal plants, which are a basis of traditional medicine. With worldwide research into pharmacology, some herbal medicines have been translated into modern remedies, such as the anti-malarial group of drugs called artemisinin isolated from '' Artemisia annua'', a herb that was known in Chinese medicine to treat fever. There is limited scientific evidence for the safety and efficacy of plants used in 21st century herbalism, which generally does not provide standards for purity or dosage. The scope of herbal medicine commonly includes fungal and bee products, as well as minerals, shells and certain animal parts. Herbal medicine is also called phytomedicine or phytotherapy. Paraherbalism describes alternative and pseudoscientific practices of using unrefined plant or animal extracts as unproven medicines or health-promoting agents. Paraherbalism relies on the belief that preserving various ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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