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Bergamot orange
Citrus bergamia
Citrus bergamia - Köhler–s Medizinal-Pflanzen-184.jpg
Scientific classification
  • Citrus aurantium subsp. bergamia (Risso & Poit.) Wight & Arn. ex Engl.
  • Citrus aurantium var. bergamia Loisel

Citrus bergamia, the bergamot orange (pronounced), is a fragrant citrus fruit the size of an orange, with a yellow or green color similar to a lime, depending on ripeness.

Genetic research into the ancestral origins of extant citrus cultivars found bergamot orange to be a probable hybrid of lemon and bitter orange. Extracts have been used as an aromatic ingredient in food, tea, snus, perfumes, and cosmetics. Use on the skin can increase photosensitivity, resulting in greater damage from sun exposure.

Citrus bergamia is commonly confused with Citrus hystrix, which is often called the Thai Bergamot. The citrux hystrix looks distinctively different and is used to advertise products based on citrus bergamia.


The word bergamot is etymologically derived from the Italian word bergamotto, ultimately of Turkish origin: bey armudu or bey armut ("lord's pear" or "lord pear").


Citrus bergamia is a small tree that blossoms during the winter. The juice tastes less sour than lemon, but more bitter than grapefruit.


Bergamot fruit contains flavonoid phytochemicals, such as neoeriocitrin, naringin, neohesperidin, ponceritin, melitidin, mitrocin, miriflin, and brutieridin. Bergamot leaves contain different indole alkaloids, such as N,N,N-trimethyltryptamine.


The bergamot orange is unrelated to the herbs known as bergamot, wild bergamot, bergamot mint, or bergamint – Monarda didyma, Monarda fistulosa, and Eau de Cologne mint (the taxonomy of which is disputed). Those are all in the mint family, and are named for their similar aroma.

Citrus bergamia has also been classified as Citrus aurantium subsp. bergamia (i.e. a subspecies of bitter orange).

Citrus bergamia is sometimes confused with (but is not the same as):

Citrus bergamia is often confused with Citrus hystrix or the makrut lime. This is due to the makrut lime also being called a Thai bergamot. Though the two fruits look quite different, there is still widespread misinformation on what Citrus bergamia looks like.


An unripe bergamot orange from Calabria, Italy

The bergamot is a citrus fruit native to southern Italy. Production is mostly limited to the Ionian Sea coastal areas of the province of Reggio di Calabria in Italy, to such an extent that it is a symbol of the entire city. Most of the bergamot comes from a short stretch of land there, where the temperature is favourable. The fruit is also produced in Argentina, Brazil, Algeria, the Ivory Coast, Morocco, Tunisia, Turkey, and South-East Asia.

Citrus bergamot is commercially grown in southern Calabria (province of Reggio), southern Italy. It is also grown in southern France and the Ivory Coast for the essential oil and in Antalya in southern Turkey for its marmalade. The fruit is not generally grown for juice consumption. However, in Mauritius where it is grown on a small-scale basis, it is largely consumed as juice by the locals.

One hundred bergamot oranges yield about three ounces (85g) of bergamot oil.

Bergamot - Sour Orange (Tree) - Waddell, Maricopa County, Arizona, USA - January 2013
Bergamot orange tree in Maricopa County, Arizona

Adulteration with cheaper products such as oil of rosewood and bergamot mint has been a problem for consumers. To protect the reputation of their produce, the Italian government introduced tight controls, including testing and certificates of purity. The Stazione Sperimentale per le Industrie delle Essenze e dei Derivati dagli Agrumi (Experimental Station for Essential Oil and Citrus By-Products) located in Reggio di Calabria, was the quality control body for the essential oil Bergamotto di Reggio Calabria DOP. During World War II, Italy was unable to export to countries such as the Allied powers. Rival products from Brazil and Mexico came on to the market as a substitute, but these were produced from other citrus fruits such as sweet lime.


Tea and other uses

Bergamot preserves
Bergamot marmalade

An essence extracted from the aromatic skin of this sour fruit is used to flavour Earl Grey and Lady Grey teas, as well as confectionery (including Turkish delight). Bergamot is one of the most common "casings" (flavorings) added to Swedish snus, a form of smokeless tobacco product.


Bergamot oil is one of the most commonly used ingredients in perfumery. It is prized for its ability to combine with an array of scents to form a bouquet of aromas that complement each other. Bergamot is a major component of the original Eau de Cologne composed by Jean-Marie Farina at the beginning of the 18th century in Germany. The first use of bergamot oil as a fragrance ingredient was recorded in 1714, and can be found in the Farina Archive in Cologne. However, much "Bergamot oil" is today derived instead from eau de Cologne mint, also known as bergamot mint, which is a variety of water mint and is unrelated to citrus.


In several patch test studies, application of some sources of bergamot oil directly to the skin of guinea pigs was shown to have a concentration-dependent phototoxic effect of increasing redness after exposure to ultraviolet light (due to the chemical bergapten, and possibly also citropten, bergamottin, geranial, and neral). This is a property shared by many other citrus fruits and other members of Rutaceae including Rue. Bergapten has also been implicated as a potassium channel blocker; in one case study, a patient who consumed four litres of Earl Grey tea per day (which contains bergamot essential oil as a flavouring) suffered muscle cramps.

Bergamot is also a source of bergamottin.

Skin effects

Bergamot orange - Cross section
Bergamot orange

Used in cosmetics and perfume products, bergamot may cause skin irritation. In the past, psoralen extracted from bergamot oil was used in tanning accelerators and sunscreens. Known to be photocarcinogenic since 1959, the substances nonetheless were used in tanning activators until 1995, contributing to many cases of melanoma and death.


As of 2017, clinical research conducted on bergamot oil has been of poor quality, with no conclusions about its possible biological effects. Consuming bergamot oil as a component of tea may cause muscle cramps. Use on the skin may be unsafe, particularly for children and pregnant women, and may cause rashes resulting from photodermatotoxicity.

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