A lime (from French ''lime'', from

Arabic Arabic (, ' ; , ' or ) is a Semitic languages, Semitic language spoken primarily across the Arab world.Semitic languages: an international handbook / edited by Stefan Weninger; in collaboration with Geoffrey Khan, Michael P. Streck, Janet C ...

''līma'', from

Persian Persian may refer to: * People and things from Iran, historically called ''Persia'' in the English language ** Persians, the majority ethnic group in Iran, not to be conflated with the Iranic peoples ** Persian language, an Iranian language of the ...

''līmū'', "lemon") is a

citrus ''Citrus'' is a genus of flowering plant, flowering trees and shrubs in the rue family, Rutaceae. Plants in the genus produce citrus fruits, including important crops such as Orange (fruit), oranges, Lemon, lemons, grapefruits, pomelos, and lim ...

fruit, which is typically round,

green Green is the color between cyan and yellow on the visible spectrum. It is evoked by light which has a dominant wavelength of roughly 495570 Nanometre, nm. In subtractive color systems, used in painting and color printing, it is created by ...

in color, in

diameter In geometry, a diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle. It can also be defined as the longest chord of the circle. Both definitions are also valid for ...

, and contains

acid In computer science, ACID ( atomicity, consistency, isolation, durability) is a set of properties of database transactions intended to guarantee data validity despite errors, power failures, and other mishaps. In the context of databases, a sequ ...

juice vesicles The juice vesicles, also known as citrus kernels, (in aggregate, citrus pulp) of a citrus fruit are the membranous content of the fruit's endocarp. All fruits from the Citranae subtribe, subfamily Aurantioideae, and family Rutaceae have juice ves ...

. There are several species of citrus trees whose fruits are called limes, including the

Key lime The Key lime or acid lime (''Citrus'' × ''aurantiifolia'' or ''C. aurantifolia'') is a citrus hybrid ('' C. hystrix'' × '' C. medica'') native to tropical Southeast Asia. It has a spherical fruit, in diameter. The Key lime is usually picked ...

(''Citrus aurantiifolia''),

Persian lime Persian lime (''Citrus'' × ''latifolia''), also known by other common names such as seedless lime, Bearss lime and Tahiti lime, is a citrus fruit species of hybrid origin, known only in cultivation. The Persian lime is a triploid cross betwee ...

Makrut lime ''Citrus hystrix'', called the kaffir lime or makrut lime, (, ) is a citrus fruit native to tropical Southeast Asia. Its fruit and leaves are used in Southeast Asian cuisine, and its essential oil is used in perfumery. Its rind and crushed leav ...

, and

desert lime ''Citrus glauca'', commonly known as the desert lime, is a thorny shrub or small tree native to Queensland, New South Wales, and South Australia.Burkill, Isaac Henry. 1932. Gardens' Bulletin, Straits Settlements 5 (Index): 3. ''Citrus glauca''. ...

. Limes are a rich source of

vitamin C Vitamin C (also known as ascorbic acid and ascorbate) is a water-soluble vitamin found in citrus and other fruits and vegetables, also sold as a dietary supplement and as a topical 'serum' ingredient to treat melasma (dark pigment spots) an ...

, are sour, and are often used to accent the flavours of foods and beverages. They are grown year-round. Plants with fruit called "limes" have diverse genetic origins; limes do not form a

monophyletic In cladistics for a group of organisms, monophyly is the condition of being a clade—that is, a group of taxa composed only of a common ancestor (or more precisely an ancestral population) and all of its lineal descendants. Monophyletic gro ...

group.

Plants known as "lime"

The difficulty in identifying exactly which species of fruit are called lime in different parts of the English-speaking world (and the same problem applies to synonyms in other European languages) is increased by the botanical complexity of the

genus itself, to which the majority of limes belong. Species of this genus hybridise readily, and it is only recently that genetic studies have started to shed light on the structure of the genus. The majority of cultivated species are in reality hybrids, produced from the

citron The citron (''Citrus medica''), historically cedrate, is a large fragrant citrus fruit with a thick rind. It is said to resemble a 'huge, rough lemon'. It is one of the original citrus fruits from which all other citrus types developed throu ...

(''Citrus medica''), the

mandarin orange The mandarin orange (''Citrus reticulata''), also known as the mandarin or mandarine, is a small citrus tree fruit. Treated as a distinct species of orange, it is usually eaten plain or in fruit salads. Tangerines are a group of orange-coloured ...

(''Citrus reticulata''), the

pomelo The pomelo ( ), ''Citrus maxima'', is the largest citrus fruit from the family Rutaceae and the principal ancestor of the grapefruit. It is a natural, non-hybrid, citrus fruit, native to Southeast Asia. Similar in taste to a sweet grapefr ...

(''Citrus maxima'') and in particular with many lime varieties, the micrantha (''Citrus hystrix'' var. micrantha). *

Australian lime Australian limes are species of the plant genus ''Citrus'' that are native to Australia and Papua New Guinea. These species were formerly included in the genera ''Microcitrus'' and ''Eremocitrus''. They have been used as a food source by indigeno ...

s (former ''Microcitrus'' and ''Eremocitrus'') **

Australian desert lime ''Citrus glauca'', commonly known as the desert lime, is a thorny shrub or small tree native to Queensland, New South Wales, and South Australia.Burkill, Isaac Henry. 1932. Gardens' Bulletin, Straits Settlements 5 (Index): 3. ''Citrus glauca''. ...

(''Citrus glauca'') **

Australian finger lime ''Citrus australasica'', the Australian finger lime or caviar lime, is a thorny understorey shrub or small tree of lowland subtropical rainforest and rainforest in the coastal border region of Queensland and New South Wales, Australia. It has ed ...

(''Citrus australasica'') **

(''Citrus australis'') **

Blood lime Blood limes (or 'Australian Blood Lime') are a hybrid citrus fruit developed by the CSIRO project to investigate salt-resistant crops. While the limes proved suitable for high-salt conditions, they have seen no commercial development; the first ...

(red finger lime × (sweet orange × mandarin)) *

(''Citrus hystrix''); a papeda relative, is one of the three most widely produced limes globally. *

(''Citrus'' × ''aurantiifolia''='' Citrus micrantha'' × ''

Citrus medica The citron (''Citrus medica''), historically cedrate, is a large fragrant citrus fruit with a thick Peel (fruit), rind. It is said to resemble a 'huge, rough lemon'. It is one of the Citrus taxonomy#Citrons, original citrus fruits from which a ...

'') is also one of the three most widely produced limes globally. *

Philippine lime Calamansi (''Citrus'' × ''microcarpa''), also known as calamondin, Philippine lime, or Philippine lemon, is an economically important citrus hybrid predominantly cultivated in the Philippines. It is native to the Philippines, Borneo, Sumatra, ...

(''Citrus'' × ''microcarpa''), a

kumquat Kumquats (; zh, 金桔), or cumquats in Australian English, are a group of small fruit-bearing trees in the flowering plant family Rutaceae. Their taxonomy is disputed. They were previously classified as forming the now-historical genus ''For ...

× mandarin hybrid *

(''Citrus'' × ''latifolia'') a key lime × lemon hybrid, is the single most widely produced lime globally, with Mexico being the largest producer. *

Rangpur lime Rangpur, ''Citrus'' × ''limonia'' or ''Citrus reticulata'' × ''medica'', sometimes called the rangpur lime, mandarin lime or lemandarin, is a hybrid between the mandarin orange and the citron. It is a citrus fruit with a very acidic taste and an ...

(Mandarin lime, lemandarin, ''Citrus limonia''), a mandarin orange × citron hybrid *

Spanish lime ''Melicoccus bijugatus'' is a fruit-bearing tree in the soapberry family Sapindaceae, native or naturalized across the New World tropics including South and Central America, and parts of the Caribbean. Its stone-bearing fruits are edible. It is ...

(''Melicoccus bijugatus''); not a citrus * Sweet lime etc. (''Citrus limetta'', etc.); several distinct

citrus hybrids Citrus taxonomy refers to the botanical classification of the species, varieties, cultivars, and graft hybrids within the genus ''Citrus'' and related genera, found in cultivation and in the wild. Citrus taxonomy is complex and controversial. ...

* Wild lime (''

Adelia ricinella ''Adelia'' is a genus of flowering plants in the spurge family, Euphorbiaceae, subfamily Acalyphoideae. It is native to Latin America and the Caribbean, with one species extending northward into the southernmost part of Texas. The name is d ...

''); not a citrus * Wild lime (''Zanthoxylum fagara''); not a citrus *

Limequat The limequat is a citrofortunella hybrid that is the result of a cross between the Key lime and the kumquat, hybridized by Walter Tennyson Swingle in 1909. Description It is a small tree that grows into a contained bushy form. The leaves a ...

(lime × kumquat) Note that the tree species known in Britain as lime trees (''

Tilia ''Tilia'' is a genus of about 30 species of trees or bushes, native throughout most of the temperateness, temperate Northern Hemisphere. The tree is known as linden for the European species, and basswood for North American species. In Britain a ...

'' sp.), called ''linden'' in other dialects of English, are broadleaf temperate plants unrelated to the citrus fruits.

History

Most species and hybrids of

plants called "limes" have varying origins within tropical

Southeast Asia Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical United Nations geoscheme for Asia#South-eastern Asia, south-eastern region of Asia, consistin ...

and

South Asia South Asia is the southern subregion of Asia, which is defined in both geographical and ethno-cultural terms. The region consists of the countries of Afghanistan, Bangladesh, Bhutan, India, Maldives, Nepal, Pakistan, and Sri Lanka.;;;;;;;; ...

. They were spread throughout the world via migration and trade. The

makrut lime ''Citrus hystrix'', called the kaffir lime or makrut lime, (, ) is a citrus fruit native to tropical Southeast Asia. Its fruit and leaves are used in Southeast Asian cuisine, and its essential oil is used in perfumery. Its rind and crushed leav ...

, in particular, was one of the earliest citrus fruits introduced to other parts of the world by humans. They were spread into

Micronesia Micronesia (, ) is a subregion of Oceania, consisting of about 2,000 small islands in the western Pacific Ocean. It has a close shared cultural history with three other island regions: the Philippines to the west, Polynesia to the east, and ...

and

Polynesia Polynesia () "many" and νῆσος () "island"), to, Polinisia; mi, Porinihia; haw, Polenekia; fj, Polinisia; sm, Polenisia; rar, Porinetia; ty, Pōrīnetia; tvl, Polenisia; tkl, Polenihia (, ) is a subregion of Oceania, made up of ...

via the

Austronesian expansion The Austronesian peoples, sometimes referred to as Austronesian-speaking peoples, are a large group of peoples in Taiwan, Maritime Southeast Asia, Micronesia, coastal New Guinea, Island Melanesia, Polynesia, and Madagascar that speak Austron ...

(c. 3000–1500 BCE). They were also later spread into Middle East, and the Mediterranean region via the spice trade and the

incense trade route The Incense Trade Route was an ancient network of major land and sea trading routes linking the Mediterranean world with eastern and southern sources of incense, spices and other luxury goods, stretching from Mediterranean ports across the Levan ...

s from as early as ~1200 BCE. To prevent

scurvy Scurvy is a disease resulting from a lack of vitamin C (ascorbic acid). Early symptoms of deficiency include weakness, feeling tired and sore arms and legs. Without treatment, decreased red blood cells, gum disease, changes to hair, and bleeding ...

during the 19th century,

British sailors British may refer to: Peoples, culture, and language * British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies. ** Britishness, the British identity and common culture * British English, ...

were issued a daily allowance of citrus, such as

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 later switched to lime. The use of citrus was initially a closely guarded

military secret Secrecy is the practice of hiding information from certain individuals or groups who do not have the "need to know", perhaps while sharing it with other individuals. That which is kept hidden is known as the secret. Secrecy is often controvers ...

, as scurvy was a common scourge of various national navies, and the ability to remain at sea for lengthy periods without contracting the disorder was a huge benefit for the military. British sailors thus acquired the nickname "

Limey "Limey" (from lime / lemon) is a predominantly American slang nickname for a British person that has been around since the mid 19th century.

Production

In 2018, world production of limes (combined with

lemons 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 culina ...

for reporting) was 19.4 million

tonne The tonne ( or ; symbol: t) is a unit of mass equal to 1000 kilograms. It is a non-SI unit accepted for use with SI. It is also referred to as a metric ton to distinguish it from the non-metric units of the short ton ( United State ...

s. The top producers – India, Mexico, China, Argentina, Brazil, and Turkey – collectively accounted for 65% of global production (table).

Uses

Limes have higher contents of sugars and acids than lemons do. Lime juice may be squeezed from fresh limes, or purchased in bottles in both unsweetened and sweetened varieties. Lime juice is used to make

limeade Limeade is a lime-flavored drink sweetened with sugar. A typical method of preparation is to juice limes, and combine the juice with simple syrup or honey syrup, along with some additional water and perhaps more sugar or honey. Vodka or white ...

, and as an ingredient (typically as

sour mix Sour mix (also known as sweet and sour mix) is a mixer that is yellow-green in color and is used in many cocktails. It is made from approximately equal parts lemon and/or lime juice and simple syrup and shaken vigorously with ice. This produces a p ...

) in many

cocktail A cocktail is an alcoholic mixed drink. Most commonly, cocktails are either a combination of spirits, or one or more spirits mixed with other ingredients such as tonic water, fruit juice, flavored syrup, or cream. Cocktails vary widely across ...

Lime pickle Lime commonly refers to: * Lime (fruit), a green citrus fruit * Lime (material), inorganic materials containing calcium, usually calcium oxide or calcium hydroxide * Lime (color), a color between yellow and green Lime may also refer to: Botany ...

s are an integral part of

Indian cuisine Indian cuisine consists of a variety of regional and traditional cuisines native to India. Given the diversity in soil, climate, culture, ethnic groups, and occupations, these cuisines vary substantially and use locally available spices, he ...

, especially in

South India South India, also known as Dakshina Bharata or Peninsular India, consists of the peninsular southern part of India. It encompasses the Indian states of Andhra Pradesh, Karnataka, Kerala, Tamil Nadu, and Telangana, as well as the union territo ...

. In

Kerala Kerala ( ; ) is a state on the Malabar Coast of India. It was formed on 1 November 1956, following the passage of the States Reorganisation Act, by combining Malayalam-speaking regions of the erstwhile regions of Cochin, Malabar, South ...

, the

Onam Onam ( ) is an annual Indian harvest festival celebrated predominantly by the Hindus of Kerala. A major annual event for Keralites, it is the official festival of the state and includes a spectrum of cultural events. Onam commemorates Vamana ...

Sadhya Sadya ( ml, സദ്യ) is a meal of Kerala origin and of importance to all Malayalis, consisting of a variety of traditional vegetarian dishes usually served on a banana leaf in Kerala as lunch. Sadya means banquet in Malayalam. Sadya is ...

usually includes either

lemon pickle Preserved lemon or lemon pickle is a condiment that is common in the cuisines of Indian subcontinent and Morocco. It's also found in 18th-century English cuisine. It is also known as "country lemon" and ''leems''. Diced, quartered, halved, or ...

or lime pickle. Other Indian preparations of limes include sweetened lime pickle, salted pickle, and lime chutney. In

cooking Cooking, cookery, or culinary arts is the art, science and craft of using heat to Outline of food preparation, prepare food for consumption. Cooking techniques and ingredients vary widely, from grilling food over an open fire to using electric ...

, lime is valued both for the acidity of its juice and the floral aroma of its

zest Zest may refer to: Common usage * Zest (ingredient), the outer peel of a citrus fruit ** Zester, a tool for preparing zest ** Twist (cocktail garnish), a piece of zest * Zest (positive psychology), a component of character Brands * Zest (brand ...

. It is a common ingredient in authentic Mexican,

Vietnamese Vietnamese may refer to: * Something of, from, or related to Vietnam, a country in Southeast Asia ** A citizen of Vietnam. See Demographics of Vietnam. * Vietnamese people, or Kinh people, a Southeast Asian ethnic group native to Vietnam ** Overse ...

and

Thai Thai or THAI may refer to: * Of or from Thailand, a country in Southeast Asia ** Thai people, the dominant ethnic group of Thailand ** Thai language, a Tai-Kadai language spoken mainly in and around Thailand *** Thai script *** Thai (Unicode block ...

dishes.

Lime soup Lime commonly refers to: * Lime (fruit), a green citrus fruit * Lime (material), inorganic materials containing calcium, usually calcium oxide or calcium hydroxide * Lime (color), a color between yellow and green Lime may also refer to: Botany ...

is a traditional dish from the Mexican state of Yucatan. It is also used for its

pickling Pickling is the process of preserving or extending the shelf life of food by either anaerobic fermentation in brine or immersion in vinegar. The pickling procedure typically affects the food's texture and flavor. The resulting food is cal ...

properties in

ceviche Ceviche () is a Peruvian dish typically made from fresh raw fish cured in fresh citrus juices, most commonly lime or lemon. It is also spiced with '' ají'', chili peppers or other seasonings, and julienned red onions, salt, and cilantro are al ...

. Some

guacamole Guacamole (; (informally shortened to ''guac'' in the United States since the 1980s) is an avocado-based dip, spread, or salad first developed in Mexico. In addition to its use in modern Mexican cuisine, it has become part of international cuisi ...

recipes call for lime juice. The use of dried limes (called

black lime Dried lime, also known as: black lime; ''noomi basra'' (Iraq); ''limoo amani'' (Iran); and ''loomi'' (Oman), is a lime that has lost its water content, usually after having spent a majority of its drying time in the sun. They are used whole, sl ...

or ''limoo'') as a flavouring is typical of

Persian cuisine Iranian cuisine () refers to the culinary practices of Iran. Due to the historically common usage of the term "Persia" to refer to Iran in the Western world,Yarshater, EhsaPersia or Iran, Persian or Farsi, ''Iranian Studies'', vol. XXII no. 1 ( ...

Iraqi cuisine Iraqi cuisine (Arabic: المطبخ العراقي Kurdish: خواردنی عێراقی) or Mesopotamian cuisine is a Middle Eastern cuisine that has its origins from Sumerians, Akkadians, Babylonians, Assyrians and the other groups of the re ...

, as well as in

Eastern Arabian cuisine Eastern Arabian cuisine, also called Khaleeji cuisine ( ar, المطبخ الخليجي), is the traditional Arabic cuisine variant that is shared by the population in Eastern Arabia and areas around the Persian Gulf. Seafood is a very significan ...

'' baharat'' (a

spice mix Spice mixes are blended spices or herbs. When a certain combination of herbs or spices is called for in a recipe, it is convenient to blend these ingredients beforehand. Blends such as chili powder, curry powder, herbes de Provence, garlic salt ...

ture that is also called ''kabsa'' or ''kebsa''). Key lime gives the character flavoring to the American dessert known as

Key lime pie Key lime pie is an American dessert pie. It is made of lime, egg yolks, and sweetened condensed milk. It may be served with no topping, topped with a meringue topping made from egg whites, or with whipped cream; it may be cooked in a pie crust ...

. In Australia, desert lime is used for making

marmalade Marmalade is a fruit preserve made from the juice and peel of citrus fruits boiled with sugar and water. The well-known version is made from bitter orange. It is also made from lemons, limes, grapefruits, mandarins, sweet oranges, bergamo ...

. Lime is an ingredient in several

highball A highball is a mixed alcoholic drink composed of an alcoholic base spirit and a larger proportion of a non-alcoholic mixer, often a carbonated beverage. Examples include the Seven and Seven, Scotch and soda, gin and tonic, screwdriver (a.k.a ...

s, often based on gin, such as

gin and tonic A gin and tonic is a highball cocktail made with gin and tonic water poured over a large amount of ice. The ratio of gin to tonic varies according to taste, strength of the gin, other drink mixers being added, etc., with most recipes calling f ...

, the gimlet and

the Rickey The Rickey is a highball made from gin or bourbon, lime juice, and carbonated water. Little or no sugar is added to the rickey. It was created with bourbon in Washington, D.C. at Shoomaker's bar by bartender George A. Williamson in the 1880s, ...

. Freshly squeezed lime juice is also considered a key ingredient in

margarita A margarita is a cocktail consisting of Tequila, triple sec, and lime juice often served with salt on the rim of the glass. The drink is served shaken with ice (on the rocks), blended with ice (frozen margarita), or without ice (straight up). T ...

s, although sometimes

lemon juice 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 culina ...

is substituted. It is also found in many

rum Rum is a liquor made by fermenting and then distilling sugarcane molasses or sugarcane juice. The distillate, a clear liquid, is usually aged in oak barrels. Rum is produced in nearly every sugar-producing region of the world, such as the Ph ...

cocktails such as the

Daiquiri The daiquiri (; es, daiquirí ) is a cocktail whose main ingredients are rum, citrus juice (typically lime juice), and sugar or other sweetener. The daiquiri is one of the six basic drinks listed in David A. Embury's classic '' The Fine Ar ...

, and other tropical drinks. Lime extracts and lime

essential oils 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 ...

are frequently used in

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. Th ...

s, cleaning products, and

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 ...

Nutrition and phytochemicals

Raw limes are 88% water, 10%

carbohydrate In organic chemistry, a carbohydrate () is a biomolecule consisting of carbon (C), hydrogen (H) and oxygen (O) atoms, usually with a hydrogen–oxygen atom ratio of 2:1 (as in water) and thus with the empirical formula (where ''m'' may or ma ...

s and less than 1% each of

fat In nutrition science, nutrition, biology, and chemistry, fat usually means any ester of fatty acids, or a mixture of such chemical compound, compounds, most commonly those that occur in living beings or in food. The term often refers spec ...

and

protein Proteins are large biomolecules and macromolecules that comprise one or more long chains of amino acid residues. Proteins perform a vast array of functions within organisms, including catalysing metabolic reactions, DNA replication, respo ...

(table). Only

content at 35% of the

Daily Value The Reference Daily Intake (RDI) used in nutrition labeling on food and dietary supplement products in the U.S. and Canada is the daily intake level of a nutrient that is considered to be sufficient to meet the requirements of 97–98% of health ...

(DV) per 100 g serving is significant for nutrition, with other

nutrients A nutrient is a substance used by an organism to survive, grow, and reproduce. The requirement for dietary nutrient intake applies to animals, plants, fungi, and protists. Nutrients can be incorporated into cells for metabolic purposes or excre ...

present in low DV amounts (table). Lime juice contains slightly less

citric acid Citric acid is an organic compound with the chemical formula HOC(CO2H)(CH2CO2H)2. It is a colorless weak organic acid. It occurs naturally in citrus fruits. In biochemistry, it is an intermediate in the citric acid cycle, which occurs in ...

than

juice (about 47 g/L), nearly twice the citric acid of

grapefruit The grapefruit (''Citrus'' × ''paradisi'') is a subtropical citrus tree known for its relatively large, sour to semi-sweet, somewhat bitter fruit. The interior flesh is segmented and varies in color from pale yellow to dark pink. Grapefruit is ...

juice, and about five times the amount of citric acid found in

orange Orange most often refers to: *Orange (fruit), the fruit of the tree species '' Citrus'' × ''sinensis'' ** Orange blossom, its fragrant flower *Orange (colour), from the color of an orange, occurs between red and yellow in the visible spectrum * ...

juice. Lime pulp and peel contain diverse

phytochemical Phytochemicals are chemical compounds produced by plants, generally to help them resist fungi, bacteria and plant virus infections, and also consumption by insects and other animals. The name comes . Some phytochemicals have been used as poisons ...

s, including

polyphenol Polyphenols () are a large family of naturally occurring organic compounds characterized by multiples of phenol units. They are abundant in plants and structurally diverse. Polyphenols include flavonoids, tannic acid, and ellagitannin, some of ...

s and

terpene Terpenes () are a class of natural products consisting of compounds with the formula (C5H8)n for n > 1. Comprising more than 30,000 compounds, these unsaturated hydrocarbons are produced predominantly by plants, particularly conifers. Terpenes ...

s, many of which are under

basic research Basic research, also called pure research or fundamental research, is a type of scientific research with the aim of improving scientific theories for better understanding and prediction of natural or other phenomena. In contrast, applied resear ...

for their potential properties in humans.

Toxicity

Contact with lime peel or lime juice followed by exposure to

ultraviolet Ultraviolet (UV) is a form of electromagnetic radiation with wavelength from 10 nanometer, nm (with a corresponding frequency around 30 Hertz, PHz) to 400 nm (750 Hertz, THz), shorter than that of visible light, but longer than ...

light may lead to

phytophotodermatitis Phytophotodermatitis, also known as berloque dermatitis or margarita photodermatitis, is a cutaneous phototoxic inflammatory reaction resulting from contact with a light-sensitizing botanical agent followed by exposure to ultraviolet light (from ...

, which is sometimes called margarita

photodermatitis Photodermatitis, sometimes referred to as sun poisoning or photoallergy, is a form of allergic contact dermatitis in which the allergen must be activated by light to sensitize the allergic response, and to cause a rash or other systemic effects o ...

or lime disease (not to be confused with

Lyme disease Lyme disease, also known as Lyme borreliosis, is a vector-borne disease caused by the ''Borrelia'' bacterium, which is spread by ticks in the genus ''Ixodes''. The most common sign of infection is an expanding red rash, known as erythema migran ...

). Bartenders handling limes and other citrus fruits while preparing cocktails may develop phytophotodermatitis. A class of organic chemical compounds called

furanocoumarin The furanocoumarins, or furocoumarins, are a class of organic chemical compounds produced by a variety of plants. Most of the plant species found to contain furanocoumarins belong to a handful of plant families. The families Apiaceae and Rutacea ...

s are reported to cause phytophotodermatitis in humans. Limes contain numerous furanocoumarin compounds, including

limettin Citropten is a natural organic compound with the molecular formula C11H10O4. It is found in the essential oils of citrus such as lime, lemon, and bergamot essential oil, bergamot. References

Coumarins Resorcinol ethers {{organic-compound ...

(also called

citropten Citropten is a natural 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), ...

bergapten Bergapten (5-methoxypsoralen) is a naturally-occurring organic chemical compound produced by numerous plant species, especially from the carrot family Apiaceae and the citrus family Rutaceae. For example, bergapten has been extracted from 24 ...

isopimpinellin Isopimpinellin is a natural product synthesized by numerous plant species, especially species in the carrot family Apiaceae. The compound can be found in celery, garden angelica, parsnip, fruits and in the rind and pulp of limes. Several studies ...

, xanthotoxin (also called

methoxsalen Methoxsalen, sold under the brand name Oxsoralen among others, is a medication used to treat psoriasis, eczema, vitiligo, and some cutaneous lymphomas in conjunction with exposing the skin to ultraviolet (UVA) light from lamps or sunlight. Methox ...

), and

psoralen Psoralen (also called psoralene) is the parent compound in a family of naturally occurring organic compounds known as the linear furanocoumarins. It is structurally related to coumarin by the addition of a fused furan ring, and may be considered ...

. Bergapten appears to be the primary furanocoumarin compound responsible for lime-induced phytophotodermatitis. Lime peel contains higher concentrations of furanocoumarins than lime pulp (by one or two orders of magnitude), and so lime peels are considerably more

phototoxic Phototoxicity, also called photoirritation, is a chemically induced skin irritation, requiring light, that does not involve the immune system. It is a type of photosensitivity. The skin response resembles an exaggerated sunburn. The involved chemi ...

than lime pulp.

s appear to be more phototoxic than

References

External links

* * {{DEFAULTSORT:Lime (Fruit) * Citrus Citrus hybrids Cocktail garnishes Crops Sour fruits