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Farnesol
Farnesol is a natural 15-carbon organic compound which is an acyclic sesquiterpene alcohol. Under standard conditions, it is a colorless liquid. It is hydrophobic, and thus insoluble in water, but miscible with oils. Farnesol is produced from 5-carbon isoprene compounds in both plants and animals. Phosphate-activated derivatives of farnesol are the building blocks of possibly all acyclic sesquiterpenoids. These compounds are doubled to form 30-carbon squalene, which is the precursor for steroids in plants, animals, and fungi. Farnesol and its derivatives are important starting compounds for natural and artificial organic synthesis. Uses Farnesol is present in many essential oils such as citronella, neroli, cyclamen, lemon grass, tuberose, rose, musk, balsam, and tolu. It is used in perfumery to emphasize the odors of sweet, floral perfumes. It enhances perfume scent by acting as a co-solvent that regulates the volatility of the odorants. It is especially used in lilac perf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vachellia Farnesiana
''Vachellia farnesiana'', also known as ''Acacia farnesiana'', and previously ''Mimosa farnesiana'', commonly known as sweet acacia, huisache, or needle bush, is a species of shrub or small tree in the legume family, Fabaceae. Its flowers are used in the perfume industry. Description The plant is deciduous over part of its range, but evergreen in most locales. Growing from multiple trunks, it reaches a height of . The bark is whitish gray. The base of each leaf is accompanied by a pair of thorns on the branch. The dark brown fruit is a seed pod. Taxonomy Taxonomic history It was first described by Europeans under the name ''Acacia Indica Farnesiana'' in 1625 by Tobias Aldini from plants grown in Rome in the Farnese Gardens from seed collected in Santo Domingo, in what is now the Dominican Republic, which germinated in 1611. Aldini included an illustration of the plant, which he contrasted with an illustration of the first known ''Acacia''; ''Acacia nilotica''. This first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sesquiterpene
Sesquiterpenes are a class of terpenes that consist of three isoprene units and often have the molecular formula C15H24. Like monoterpenes, sesquiterpenes may be cyclic or contain rings, including many unique combinations. Biochemical modifications such as oxidation or rearrangement produce the related sesquiterpenoids. Sesquiterpenes are found naturally in plants and insects, as semiochemicals, e.g. defensive agents or pheromones. Biosynthesis and examples The reaction of geranyl pyrophosphate with isopentenyl pyrophosphate results in the 15-carbon farnesyl pyrophosphate (FPP), which is an intermediate in the biosynthesis of sesquiterpenes such as farnesene. Cyclic sesquiterpenes are more common than cyclic monoterpenes because of the increased chain length and additional double bond in the sesquiterpene precursors. In addition to common six-membered ring systems such as the ones found in zingiberene and bisacurone, cyclization of one end of the chain to the other en ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Farnese Gardens
The Farnese Gardens ( it, Orti Farnesiani sul Palatino), or "Gardens of Farnese upon the Palatine", are a garden in Rome, central Italy, created in 1550 on the northern portion of Palatine Hill, by Cardinal Alessandro Farnese. They were the first private botanical gardens in Europe; the first botanical gardens of any kind in Europe were started by Italian universities in the mid-16th century, only a short time before. Alessandro Farnese was appointed Cardinal Deacon of the Roman Catholic Church in 1534 at the age of 14, by Paul III, his grandfather, who had been elected to the papacy two months previously. He is remembered for being an antiquarian who assembled the greatest collection of Roman sculpture assembled in private hands since antiquity, the famous Farnese Collection. In 1550, when Farnese acquired a northern portion of Palatine hill (historically the oldest of Rome's seven hills) he had ruins from a Roman palace of Tiberius at the northwest end of the hill top filled ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neroli
Neroli oil is an essential oil produced from the blossom of the bitter orange tree (''Citrus aurantium subsp. amara'' or ''Bigaradia''). Its scent is sweet, honeyed and somewhat metallic with green and spicy facets. Orange blossom is also extracted from the same blossom and both extracts are extensively used in perfumery. Orange blossom can be described as smelling sweeter, warmer and more floral than neroli. The difference between how neroli and orange blossom smell and why they are referred to with different names, is a result of the process of extraction that is used to obtain the oil from the blooms. Neroli is extracted by steam distillation and orange blossom is extracted via a process of enfleurage (rarely used nowadays due to prohibitive costs) or solvent extraction. Production The blossoms are gathered, usually by hand, in late April to early May. The oil is extracted by steam distillation. Tunisia, Morocco, and Egypt are the leading producers of Neroli. History ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pheromone
A pheromone () is a secreted or excreted chemical factor that triggers a social response in members of the same species. Pheromones are chemicals capable of acting like hormones outside the body of the secreting individual, to affect the behavior of the receiving individuals. There are '' alarm pheromones'', ''food trail pheromones'', '' sex pheromones'', and many others that affect behavior or physiology. Pheromones are used by many organisms, from basic unicellular prokaryotes to complex multicellular eukaryotes. Their use among insects has been particularly well documented. In addition, some vertebrates, plants and ciliates communicate by using pheromones. The ecological functions and evolution of pheromones are a major topic of research in the field of chemical ecology. Background The portmanteau word "pheromone" was coined by Peter Karlson and Martin Lüscher in 1959, based on the Greek φερω ''pheroo'' ('I carry') and ὁρμων ''hormon'' ('stimulating'). Pheromone ... [...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. Livin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dictionary
A dictionary is a listing of lexemes from the lexicon of one or more specific languages, often arranged alphabetically (or by radical and stroke for ideographic languages), which may include information on definitions, usage, etymologies, pronunciations, translation, etc.Webster's New World College Dictionary, Fourth Edition, 2002 It is a lexicographical reference that shows inter-relationships among the data. A broad distinction is made between general and specialized dictionaries. Specialized dictionaries include words in specialist fields, rather than a complete range of words in the language. Lexical items that describe concepts in specific fields are usually called terms instead of words, although there is no consensus whether lexicology and terminology are two different fields of study. In theory, general dictionaries are supposed to be semasiological, mapping word to definition, while specialized dictionaries are supposed to be onomasiological, first identifyin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alcohol (chemistry)
In chemistry, an alcohol is a type of organic compound that carries at least one hydroxyl () functional group bound to a saturated carbon atom. The term ''alcohol'' originally referred to the primary alcohol ethanol (ethyl alcohol), which is used as a drug and is the main alcohol present in alcoholic drinks. An important class of alcohols, of which methanol and ethanol are the simplest examples, includes all compounds which conform to the general formula . Simple monoalcohols that are the subject of this article include primary (), secondary () and tertiary () alcohols. The suffix ''-ol'' appears in the IUPAC chemical name of all substances where the hydroxyl group is the functional group with the highest priority. When a higher priority group is present in the compound, the prefix ''hydroxy-'' is used in its IUPAC name. The suffix ''-ol'' in non-IUPAC names (such as paracetamol or cholesterol) also typically indicates that the substance is an alcohol. However, some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
House Of Farnese
The House of Farnese family (, also , ) was an influential family in Renaissance Italy. The titles of Duke of Parma and Piacenza and Duke of Castro were held by various members of the family. Its most important members included Pope Paul III, Alessandro Farnese (a cardinal), Alexander Farnese, Duke of Parma and Piacenza (a military commander and Governor of the Spanish Netherlands), and Elisabeth Farnese, who became Queen of Spain and whose legacy was brought to her Bourbon descendants. A number of important architectural works and antiquities are associated with the Farnese family, either through construction or acquisition. Buildings include the Palazzo Farnese in Rome and the Villa Farnese at Caprarola, and ancient artifacts include the Farnese Marbles. History Origins The family could trace its origins back to around AD 984 and took its name from one of its oldest feudal possessions - ''Castrum Farneti''. There has been some debate as to the origins of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Odoardo Farnese (cardinal)
Odoardo Farnese (6 December 1573 – 21 February 1626) was an Italian nobleman, the second son of Alessandro Farnese, Duke of Parma and Maria of Portugal, known for his patronage of the arts. He became a Cardinal of the Roman Catholic Church in 1591, and briefly acted as regent of the Duchy of Parma and Piacenza for his nephew Odoardo from 1622 to 1626. Cardinal Odoardo is probably best known today for commissioning the Bolognese artist Annibale Carracci to fresco the Camerino in the Palazzo Farnese in Rome. Carracci undertook this from 1595 to 1597, just prior to starting his decoration of the more famous and elaborate Farnese Gallery in the same palace. The Camerino The Camerino was Farnese's private study. The subject of the central scene in the ceiling is '' The Choice of Hercules''. The scene is surrounded by a painted frame, an example of '' quadro riportato'', which gives the illusion of a framed oil painting hung on the ceiling when in reality both the scene and its f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linalool
Linalool () refers to two enantiomers of a naturally occurring terpene alcohol found in many flowers and spice plants. Linalool has multiple commercial applications, the majority of which are based on its pleasant scent (floral, with a touch of spiciness). A colorless oil, linalool is classified as an acyclic monoterpenoid. In plants, it is a metabolite, a volatile oil component, an antimicrobial agent, and an aroma compound. Linalool has uses in manufacturing of soaps, fragrances, food additives as flavors, household products, and insecticides. Esters of linalool are referred to as linalyl, e.g. linalyl pyrophosphate, an isomer of geranyl pyrophosphate. The word ''linalool'' is based on ''linaloe'' (a type of wood) and the suffix '. In food manufacturing, it may be called ''coriandrol''. Occurrence Both enantiomeric forms are found in nature: (''S'')-linalool is found, for example, as a major constituent of the essential oils of coriander ('' Coriandrum sativum'' L.) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
