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Bisabolenes are a group of closely related natural chemical compounds which are classified as
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 modificat ...
s. Bisabolenes are produced from farnesyl pyrophosphate (FPP) and are present in the
essential oil 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 o ...
s of
bisabol Opopanax is the commercial name of ''bisabol'' or ''bissabol'', the fragrant oleo- gum-resin of '' Commiphora guidottii''. It has been a major export article from Somalia since ancient times, and is called ''hebbakhade'', ''habaghadi'' or ''habak ...
, and of a wide variety of other plants including
cubeb ''Piper cubeba'', cubeb or tailed pepper is a plant in genus ''Piper (plant), Piper'', cultivated for its fruit and essential oil. It is mostly grown in Java (island), Java and Sumatra, hence sometimes called Java pepper. The fruits are gathere ...
,
lemon The lemon (''Citrus limon'') is a species of small evergreen trees in the flowering plant family Rutaceae, native to Asia, primarily Northeast India (Assam), Northern Myanmar or China. The tree's ellipsoidal yellow fruit is used for culin ...
, and
oregano Oregano (, ; ''Origanum vulgare'') is a species of flowering plant in the mint family Lamiaceae. It was native to the Mediterranean region, but widely naturalised elsewhere in the temperate Northern Hemisphere. Oregano is a woody perennial pla ...
. Various derivates also function as
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 behavio ...
s in different
insect Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body ( head, thorax and abdomen), three pairs ...
s, such as stink bugs and
fruit flies Fruit fly may refer to: Organisms * Drosophilidae, a family of small flies, including: ** ''Drosophila'', the genus of small fruit flies and vinegar flies ** ''Drosophila melanogaster'' or common fruit fly ** ''Drosophila suzukii'' or Asian fruit ...
. Bisabolenes are produced by several fungi, though their biological role in that group of organisms remains unclear. Three
isomer In chemistry, isomers are molecules or polyatomic ions with identical molecular formulae – that is, same number of atoms of each element – but distinct arrangements of atoms in space. Isomerism is existence or possibility of isomers. Iso ...
s are known, α-, β-, and γ-bisabolene, which differ by the positions of the
double bond In chemistry, a double bond is a covalent bond between two atoms involving four bonding electrons as opposed to two in a single bond. Double bonds occur most commonly between two carbon atoms, for example in alkenes. Many double bonds exist betw ...
s.


Uses

Bisabolenes are intermediates in the
biosynthesis Biosynthesis is a multi-step, enzyme-catalyzed process where substrates are converted into more complex products in living organisms. In biosynthesis, simple compounds are modified, converted into other compounds, or joined to form macromolecules. ...
of many other natural chemical compounds, including hernandulcin, a natural sweetener. β-Bisabolene has a balsamic odor and is approved in Europe as a food additive. Bisabolene has been identified as a biologically producible precursor to a
diesel fuel Diesel fuel , also called diesel oil, is any liquid fuel specifically designed for use in a diesel engine, a type of internal combustion engine in which fuel ignition takes place without a spark as a result of compression of the inlet air and t ...
alternative and/or cold weather additive bisabol''ane''.


See also

* Alpha-bisabolene synthase * (S)-beta-bisabolene synthase * (E)-gamma-bisabolene synthase * (Z)-gamma-bisabolene synthase


References

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External links


Beta-bisabolene
NIST The National Institute of Standards and Technology (NIST) is an agency of the United States Department of Commerce whose mission is to promote American innovation and industrial competitiveness. NIST's activities are organized into physical sci ...
Chemistry WebBook listing Sesquiterpenes Hydrocarbons Cyclohexenes