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Saffron () is a spice derived from the flower of '' Crocus sativus'', commonly known as the "saffron crocus". The vivid crimson stigma and styles, called threads, are collected and dried for use mainly as a
seasoning Seasoning is the process of supplementing food via herbs, spices, salts, and/or sugar, intended to enhance a particular flavour. General meaning Seasonings include herbs and spices, which are themselves frequently referred to as "seasonings". Ho ...
and colouring agent in food. Although some doubts remain on its origin, it is believed that saffron originated in Iran. However, Greece and Mesopotamia have also been suggested as the possible region of origin of this plant. Saffron crocus slowly propagated throughout much of Eurasia and was later brought to parts of North Africa,
North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...
, and Oceania. Saffron's taste and iodoform-like or hay-like fragrance result from the
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
picrocrocin Picrocrocin is a monoterpene glycoside precursor of safranal. It is found in the spice saffron, which comes from the crocus flower. Picrocrocin has a bitter taste, and is the chemical most responsible for the taste of saffron. During the drying ...
and
safranal Safranal is an organic compound isolated from saffron, the spice consisting of the stigmas of crocus flowers (''Crocus sativus''). It is the constituent primarily responsible for the aroma of saffron. It is believed that safranal is a degradat ...
. It also contains a
carotenoid Carotenoids (), also called tetraterpenoids, are yellow, orange, and red organic compound, organic pigments that are produced by plants and algae, as well as several bacteria, and Fungus, fungi. Carotenoids give the characteristic color to pumpki ...
pigment,
crocin Crocin is a carotenoid chemical compound that is found in the flowers of crocus and gardenia. Crocin is the chemical primarily responsible for the color of saffron. Chemically, crocin is the diester formed from the disaccharide gentiobiose and ...
, which imparts a rich golden-yellow hue to dishes and textiles. Its recorded history is attested in a 7th-century BC Assyrian botanical treatise, and has been traded and used for thousands of years. In the 21st century, Iran produces some 90% of the world total for saffron. At US$5,000 per kg or higher, saffron has long been the world's costliest spice by weight.


Etymology

A degree of uncertainty surrounds the origin of the English word "saffron". It might stem from the 12th-century Old French term ''safran'', which comes from the Latin word , from the Arabic (زَعْفَرَان), ''za'farān'', which comes from the Persian word ''zarparan'' meaning "gold strung" (implying either the golden stamens of the flower or the golden color it creates when used as flavor).


Species


Description

The domesticated saffron crocus, ''Crocus sativus'', is an autumn- flowering perennial plant unknown in the wild. It probably descends from the eastern Mediterranean autumn-flowering ''Crocus cartwrightianus'' which is also known as "wild saffron" and originated in Crete or Central Asia. '' C. thomasii'' and '' C. pallasii'' are other possible sources. As a genetically monomorphic clone, it slowly propagated throughout much of Eurasia. It is a sterile triploid form, which means that three homologous sets of chromosomes make up each specimen's genetic complement; ''C. sativus'' bears eight chromosomal bodies per set, making for 24 in total. Being sterile, the purple flowers of ''C. sativus'' fail to produce viable seeds; reproduction hinges on human assistance: clusters of corms, underground, bulb-like, starch-storing organs, must be dug up, divided, and replanted. A corm survives for one season, producing via vegetative division up to ten "cormlets" that can grow into new plants in the next season. The compact corms are small, brown globules that can measure as large as in diameter, have a flat base, and are shrouded in a dense mat of parallel fibres; this coat is referred to as the "corm tunic". Corms also bear vertical fibres, thin and net-like, that grow up to above the plant's neck. The plant sprouts 5–11 white and non-
photosynthetic Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities. Some of this chemical energy is stored in c ...
leaves known as
cataphyll In plant morphology, a cataphyll (sometimes also called a ''cataphyllum'' or cataphyll leafJackson, Benjamin, Daydon; A Glossary of Botanic Terms with their Derivation and Accent; Published by Gerald Duckworth & Co. London, 4th ed 1928) is a reduce ...
s. These membrane-like structures cover and protect 5 to 11 true leaves as they bud and develop on the crocus flower. The latter are thin, straight, and blade-like green foliage leaves, which are , in diameter, which either expand after the flowers have opened ("hysteranthous") or do so simultaneously with their blooming ("synanthous"). ''C. sativus'' cataphylls are suspected by some to manifest prior to blooming when the plant is irrigated relatively early in the growing season. Its floral axes, or flower-bearing structures, bear
bract In botany, a bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis or cone scale. Bracts are usually different from foliage leaves. They may be smaller, larger, or of ...
eoles, or specialised leaves, that sprout from the flower stems; the latter are known as
pedicels In botany, a pedicel is a stem that attaches a single flower to the inflorescence. Such inflorescences are described as ''pedicellate''. Description Pedicel refers to a structure connecting a single flower to its inflorescence. In the absenc ...
. After aestivating in spring, the plant sends up its true leaves, each up to in length. Only in October, after most other flowering plants have released their seeds, do its brilliantly hued flowers develop; they range from a light pastel shade of lilac to a darker and more striated mauve. The flowers possess a sweet, honey-like fragrance. Upon flowering, the plants are in height and bear up to four flowers. A three-pronged style in length, emerges from each flower. Each prong terminates with a vivid crimson stigma, which are the distal end of a carpel.


Cultivation

The saffron crocus, unknown in the wild, probably descends from ''
Crocus cartwrightianus ''Crocus cartwrightianus'' is a species of flowering plant in the family Iridaceae, native to mainland Greece and Crete. It is a cormous perennial growing to . The flowers, in shades of lilac or white with purple veins and prominent red stigmas, ...
''. It is a triploid that is "self-incompatible" and male sterile; it undergoes aberrant meiosis and is hence incapable of independent sexual reproduction—all propagation is by vegetative multiplication via manual "divide-and-set" of a starter clone or by interspecific hybridisation. ''Crocus sativus'' thrives in the Mediterranean
maquis Maquis may refer to: Resistance groups * Maquis (World War II), predominantly rural guerrilla bands of the French Resistance * Spanish Maquis, guerrillas who fought against Francoist Spain in the aftermath of the Spanish Civil War * The network ...
, an ecotype superficially resembling the North American
chaparral Chaparral ( ) is a shrubland plant community and geographical feature found primarily in the U.S. state of California, in southern Oregon, and in the northern portion of the Baja California Peninsula in Mexico. It is shaped by a Mediterranean c ...
, and similar climates where hot and dry summer breezes sweep semi-arid lands. It can nonetheless survive cold winters, tolerating frosts as low as and short periods of snow cover. Irrigation is required if grown outside of moist environments such as
Kashmir Kashmir () is the northernmost geographical region of the Indian subcontinent. Until the mid-19th century, the term "Kashmir" denoted only the Kashmir Valley between the Great Himalayas and the Pir Panjal Range. Today, the term encompas ...
, where annual rainfall averages ; saffron-growing regions in Greece ( annually) and Spain () are far drier than the main cultivating Iranian regions. What makes this possible is the timing of the local wet seasons; generous spring rains and drier summers are optimal. Rain immediately preceding flowering boosts saffron yields; rainy or cold weather during flowering promotes disease and reduces yields. Persistently damp and hot conditions harm the crops, and rabbits, rats, and birds cause damage by digging up corms.
Nematode The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-Parasitism, parasitic nematodes also known as eelworms. They are a diverse animal phylum inhab ...
s, leaf rusts, and corm rot pose other threats. Yet '' Bacillus subtilis'' inoculation may provide some benefit to growers by speeding corm growth and increasing stigma biomass yield. The plants fare poorly in shady conditions; they grow best in full sunlight. Fields that slope towards the sunlight are optimal (i.e., south-sloping in the Northern Hemisphere). Planting is mostly done in June in the Northern Hemisphere, where corms are lodged deep; its roots, stems, and leaves can develop between October and February. Planting depth and corm spacing, in concert with climate, are critical factors in determining yields. Mother corms planted deeper yield higher-quality saffron, though form fewer flower buds and daughter corms. Italian growers optimise thread yield by planting deep and in rows apart; depths of optimise flower and corm production. Greek, Moroccan, and Spanish growers employ distinct depths and spacings that suit their locales. ''C. sativus'' prefers friable, loose, low-density, well-watered, and well-drained clay- calcareous soils with high organic content. Traditional raised beds promote good drainage. Soil organic content was historically boosted via application of some of manure. Afterwards, and with no further manure application, corms were planted. After a period of dormancy through the summer, the corms send up their narrow leaves and begin to bud in early autumn. Only in mid-autumn do they flower. Harvests are by necessity a speedy affair: after blossoming at dawn, flowers quickly wilt as the day passes. All plants bloom within a window of one or two weeks. Stigmas are dried quickly upon extraction and (preferably) sealed in airtight containers.


Harvesting

The high retail value of saffron is maintained on world markets because of labour-intensive harvesting methods, which require some – equivalently, . Forty hours of labour are needed to pick 150,000 flowers. One freshly picked crocus flower yields on average 30 mg of fresh saffron or 7 mg dried; roughly 150 flowers yield of dry saffron threads; to produce of dried saffron, of flowers are needed; the yield of dried spice from fresh saffron is only .


Spice


Phytochemistry and sensory properties

Saffron contains some 28 volatile and aroma-yielding compounds, dominated by
ketone In organic chemistry, a ketone is a functional group with the structure R–C(=O)–R', where R and R' can be a variety of carbon-containing substituents. Ketones contain a carbonyl group –C(=O)– (which contains a carbon-oxygen double bo ...
s and aldehydes. Its main aroma-active compounds are
safranal Safranal is an organic compound isolated from saffron, the spice consisting of the stigmas of crocus flowers (''Crocus sativus''). It is the constituent primarily responsible for the aroma of saffron. It is believed that safranal is a degradat ...
– the main compound responsible for saffron aroma – 4-ketoisophorone, and dihydrooxophorone. Saffron also contains nonvolatile
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 the
carotenoid Carotenoids (), also called tetraterpenoids, are yellow, orange, and red organic compound, organic pigments that are produced by plants and algae, as well as several bacteria, and Fungus, fungi. Carotenoids give the characteristic color to pumpki ...
s zeaxanthin, lycopene, various α- and β-
carotene The term carotene (also carotin, from the Latin ''carota'', "carrot") is used for many related unsaturated hydrocarbon substances having the formula C40Hx, which are synthesized by plants but in general cannot be made by animals (with the exc ...
s, as well as
crocetin Crocetin is a natural apocarotenoid dicarboxylic acid that is found in the crocus flower together with its glycoside, crocin, and '' Gardenia jasminoides'' fruits. It forms brick red crystals with a melting point of 285°C. The chemical struct ...
and its glycoside crocein, which are the most biologically active components. Because crocetin is smaller and more water-soluble than the other carotenoids, it is more rapidly absorbed. The yellow-orange colour of saffron is primarily the result of α-crocin. This
crocin Crocin is a carotenoid chemical compound that is found in the flowers of crocus and gardenia. Crocin is the chemical primarily responsible for the color of saffron. Chemically, crocin is the diester formed from the disaccharide gentiobiose and ...
is trans-
crocetin Crocetin is a natural apocarotenoid dicarboxylic acid that is found in the crocus flower together with its glycoside, crocin, and '' Gardenia jasminoides'' fruits. It forms brick red crystals with a melting point of 285°C. The chemical struct ...
di-(β-D- gentiobiosyl) ester; it bears the systematic (IUPAC) name 8,8-diapo-8,8-carotenoic acid. This means that the crocin underlying saffron's aroma is a digentiobiose ester of the carotenoid crocetin. Crocins themselves are a series of hydrophilic carotenoids that are either monoglycosyl or diglycosyl polyene esters of crocetin. Crocetin is a conjugated polyene
dicarboxylic acid In organic chemistry, a dicarboxylic acid is an organic compound containing two carboxyl groups (). The general molecular formula for dicarboxylic acids can be written as , where R can be aliphatic or aromatic. In general, dicarboxylic acids show ...
that is hydrophobic, and thus oil-soluble. When crocetin is
esterified In chemistry, an ester is a compound derived from an oxoacid (organic or inorganic) in which at least one hydroxyl group () is replaced by an alkoxy group (), as in the substitution reaction of a carboxylic acid and an alcohol. Glycerides are fa ...
with two water-soluble gentiobioses, which are sugars, a product results that is itself water-soluble. The resultant α-crocin is a carotenoid pigment that may make up more than 10% of dry saffron's mass. The two esterified gentiobioses make α-crocin ideal for colouring water-based and non-fatty foods such as rice dishes. The bitter
glucoside A glucoside is a glycoside that is derived from glucose. Glucosides are common in plants, but rare in animals. Glucose is produced when a glucoside is hydrolysed by purely chemical means, or decomposed by fermentation or enzymes. The name was o ...
picrocrocin Picrocrocin is a monoterpene glycoside precursor of safranal. It is found in the spice saffron, which comes from the crocus flower. Picrocrocin has a bitter taste, and is the chemical most responsible for the taste of saffron. During the drying ...
is responsible for saffron's pungent flavour. Picrocrocin ( chemical formula: ; systematic name: 4-(β-D-glucopyranosyloxy)-2,6,6-trimethylcyclohex-1-ene-1-carbaldehyde) is a union of an aldehyde sub-molecule known as
safranal Safranal is an organic compound isolated from saffron, the spice consisting of the stigmas of crocus flowers (''Crocus sativus''). It is the constituent primarily responsible for the aroma of saffron. It is believed that safranal is a degradat ...
(systematic name: 2,6,6-trimethylcyclohexa-1,3-diene-1-carbaldehyde) and a carbohydrate. It has insecticidal and pesticidal properties, and may comprise up to 4% of dry saffron. Picrocrocin is a truncated version of the carotenoid zeaxanthin that is produced via
oxidative Redox (reduction–oxidation, , ) is a type of chemical reaction in which the oxidation states of substrate change. Oxidation is the loss of electrons or an increase in the oxidation state, while reduction is the gain of electrons or a d ...
cleavage, and is the glycoside of the terpene aldehyde safranal. When saffron is dried after its harvest, the heat, combined with enzymatic action, splits picrocrocin to yield Dglucose and a free safranal molecule. Safranal, a volatile oil, gives saffron much of its distinctive aroma. Safranal is less bitter than picrocrocin and may comprise up to 70% of dry saffron's volatile fraction in some samples. A second molecule underlying saffron's aroma is 2-hydroxy-4,4,6-trimethyl-2,5-cyclohexadien-1-one, which produces a scent described as saffron, dried hay-like. Chemists find this is the most powerful contributor to saffron's fragrance, despite its presence in a lesser quantity than safranal. Dry saffron is highly sensitive to fluctuating pH levels, and rapidly breaks down chemically in the presence of light and oxidising agents. It must, therefore, be stored away in air-tight containers to minimise contact with atmospheric oxygen. Saffron is somewhat more resistant to heat.


Grades and ISO 3632 categories

Saffron is not all of the same quality and strength. Strength is related to several factors including the amount of style picked along with the red stigma. Age of the saffron is also a factor. More style included means the saffron is less strong gram for gram because the colour and flavour are concentrated in the red stigmas. Saffron from Iran, Spain and
Kashmir Kashmir () is the northernmost geographical region of the Indian subcontinent. Until the mid-19th century, the term "Kashmir" denoted only the Kashmir Valley between the Great Himalayas and the Pir Panjal Range. Today, the term encompas ...
is classified into various grades according to the relative amounts of red stigma and yellow styles it contains. Grades of Iranian saffron are: ''sargol'' (red stigma tips only, strongest grade), ''pushal'' or ''pushali'' (red stigmas plus some yellow style, lower strength), "bunch" saffron (red stigmas plus large amount of yellow style, presented in a tiny bundle like a miniature wheatsheaf) and ''konge'' (yellow style only, claimed to have aroma but with very little, if any, colouring potential). Grades of Spanish saffron are ''coupé'' (the strongest grade, like Iranian sargol), ''mancha'' (like Iranian pushal), and in order of further decreasing strength ''rio'', ''standard'' and ''sierra'' saffron. The word ''mancha'' in the Spanish classification can have two meanings: a general grade of saffron or a very high quality Spanish-grown saffron from a specific geographical origin. Real Spanish-grown La Mancha saffron has PDO protected status and this is displayed on the product packaging. Spanish growers fought hard for Protected Status because they felt that imports of Iranian saffron re-packaged in Spain and sold as "Spanish Mancha saffron" were undermining the genuine La Mancha brand. Similar was the case in
Kashmir Kashmir () is the northernmost geographical region of the Indian subcontinent. Until the mid-19th century, the term "Kashmir" denoted only the Kashmir Valley between the Great Himalayas and the Pir Panjal Range. Today, the term encompas ...
where imported Iranian saffron is mixed with local saffron and sold as "Kashmir brand" at a higher price. In Kashmir, saffron is mostly classified into two main categories called ''mongra'' (stigma alone) and ''lachha'' (stigmas attached with parts of the style). Countries producing less saffron do not have specialised words for different grades and may only produce one grade. Artisan producers in Europe and New Zealand have offset their higher labour charges for saffron harvesting by targeting quality, only offering extremely high-grade saffron. In addition to descriptions based on how the saffron is picked, saffron may be categorised under the international standard ISO 3632 after laboratory measurement of crocin (responsible for saffron's colour), picrocrocin (taste), and safranal (fragrance or aroma) content. However, often there is no clear grading information on the product packaging and little of the saffron readily available in the UK is labelled with ISO category. This lack of information makes it hard for customers to make informed choices when comparing prices and buying saffron. Under ISO 3632, determination of non-stigma content ("floral waste content") and other extraneous matter such as inorganic material ("
ash Ash or ashes are the solid remnants of fires. Specifically, ''ash'' refers to all non-aqueous, non- gaseous residues that remain after something burns. In analytical chemistry, to analyse the mineral and metal content of chemical samples, ash ...
") are also key. Grading standards are set by the International Organization for Standardization, a federation of national standards bodies. ISO 3632 deals exclusively with saffron and establishes three categories: III (poorest quality), II, and I (finest quality). Formerly there was also category IV, which was below category III. Samples are assigned categories by gauging the spice's crocin and picrocrocin content, revealed by measurements of specific spectrophotometric absorbance. Safranal is treated slightly differently and rather than there being threshold levels for each category, samples must give a reading of 20–50 for all categories. These data are measured through spectrophotometry reports at certified testing laboratories worldwide. Higher absorbances imply greater levels of crocin, picrocrocin and safranal, and thus a greater colouring potential and therefore strength per gram. The absorbance reading of crocin is known as the "colouring strength" of that saffron. Saffron's colouring strength can range from lower than 80 (for all category IV saffron) up to 200 or greater (for category I). The world's finest samples (the selected, most red-maroon, tips of stigmas picked from the finest flowers) receive colouring strengths in excess of 250, making such saffron over three times more powerful than category IV saffron. Market prices for saffron types follow directly from these ISO categories. Sargol and coupé saffron would typically fall into ISO 3632 category I. Pushal and Mancha would probably be assigned to category II. On many saffron packaging labels, neither the ISO 3632 category nor the colouring strength (the measurement of crocin content) is displayed. However, many growers, traders, and consumers reject such lab test numbers. Some people prefer a more holistic method of sampling batches of threads for taste, aroma, pliability, and other traits in a fashion similar to that practised by experienced wine tasters. However, ISO 3632 grade and colouring strength information allow consumers to make instant comparisons between the quality of different saffron brands, without needing to purchase and sample the saffron. In particular, consumers can work out a value for money based on price per unit of colouring strength rather than price per gram, given the wide possible range of colouring strengths that different kinds of saffron can have.


Adulteration

Despite attempts at quality control and standardisation, an extensive history of saffron adulteration, particularly among the cheapest grades, continues into modern times. Adulteration was first documented in Europe's Middle Ages, when those found selling adulterated saffron were executed under the ''Safranschou'' code. Typical methods include mixing in extraneous substances like
beetroot The beetroot is the taproot portion of a beet plant, usually known in North America as beets while the vegetable is referred to as beetroot in British English, and also known as the table beet, garden beet, red beet, dinner beet or golden beet ...
, pomegranate fibres, red-dyed silk fibres, or the saffron crocus's tasteless and odourless yellow stamens. Other methods included dousing saffron fibres with viscid substances like
honey Honey is a sweet and viscous substance made by several bees, the best-known of which are honey bees. Honey is made and stored to nourish bee colonies. Bees produce honey by gathering and then refining the sugary secretions of plants (primar ...
or vegetable oil to increase their weight. Powdered saffron is more prone to adulteration, with turmeric,
paprika Paprika ( US , ; UK , ) is a spice made from dried and ground red peppers. It is traditionally made from ''Capsicum annuum'' varietals in the Longum group, which also includes chili peppers, but the peppers used for paprika tend to be milder an ...
, and other powders used as diluting fillers. Adulteration can also consist of selling mislabelled mixes of different saffron grades. Thus, high-grade Kashmiri saffron is often sold and mixed with cheaper Iranian imports; these mixes are then marketed as pure Kashmiri saffron, a development that has cost Kashmiri growers much of their income. Safflower is a common substitute sometimes sold as saffron. The spice is reportedly counterfeited with
horse hair Horsehair is the long hair growing on the manes and tails of horses. It is used for various purposes, including upholstery, brushes, the bows of musical instruments, a hard-wearing fabric called haircloth, and for horsehair plaster, a wallcov ...
, corn silk, or shredded paper. Tartrazine or sunset yellow have been used to colour counterfeit powdered saffron. In recent years, saffron adulterated with the colouring extract of
gardenia ''Gardenia'' is a genus of flowering plants in the coffee family, Rubiaceae, native to the tropical and subtropical regions of Africa, Asia, Madagascar and Pacific Islands, and Australia. The genus was named by Carl Linnaeus and John Ellis aft ...
fruits has been detected in the European market. This form of fraud is difficult to detect due to the presence of flavonoids and
crocin Crocin is a carotenoid chemical compound that is found in the flowers of crocus and gardenia. Crocin is the chemical primarily responsible for the color of saffron. Chemically, crocin is the diester formed from the disaccharide gentiobiose and ...
es in the gardenia-extracts similar to those naturally occurring in saffron. Detection methods have been developed by using
HPLC High-performance liquid chromatography (HPLC), formerly referred to as high-pressure liquid chromatography, is a technique in analytical chemistry used to separate, identify, and quantify each component in a mixture. It relies on pumps to pa ...
and
mass spectrometry Mass spectrometry (MS) is an analytical technique that is used to measure the mass-to-charge ratio of ions. The results are presented as a ''mass spectrum'', a plot of intensity as a function of the mass-to-charge ratio. Mass spectrometry is use ...
to determine the presence of
geniposide Geniposide, the glycoside form of genipin, is a bioactive iridoid glycoside that is found in a wide variety of medicinal herbs, such as ''Gardenia jasminoides (fruits) ''. Geniposide shows several pharmacological effects (in vitro and in vivo) ...
, a compound present in the fruits of gardenia, but not in saffron.


Types

The various saffron crocus cultivars give rise to thread types that are often regionally distributed and characteristically distinct. Varieties (not varieties in the botanical sense) from Spain, including the tradenames "Spanish Superior" and "Creme", are generally mellower in colour, flavour, and aroma; they are graded by government-imposed standards. Italian varieties are slightly more potent than Spanish. Greek saffron produced in the town of Krokos is PDO protected due to its particularly high-quality colour and strong flavour. Various "boutique" crops are available from New Zealand, France, Switzerland, England, the United States, and other countries—some of them organically grown. In the US, Pennsylvania Dutch saffron—known for its "earthy" notes—is marketed in small quantities. Consumers may regard certain cultivars as "premium" quality. The "Aquila" saffron, or ''zafferano dell'Aquila'', is defined by high safranal and crocin content, distinctive thread shape, unusually pungent aroma, and intense colour; it is grown exclusively on eight hectares in the Navelli Valley of Italy's
Abruzzo Abruzzo (, , ; nap, label=Neapolitan language, Abruzzese Neapolitan, Abbrùzze , ''Abbrìzze'' or ''Abbrèzze'' ; nap, label=Sabino dialect, Aquilano, Abbrùzzu; #History, historically Abruzzi) is a Regions of Italy, region of Southern Italy wi ...
region, near
L'Aquila L'Aquila ( , ) is a city and ''comune'' in central Italy. It is the capital city of both the Abruzzo region and of the Province of L'Aquila. , it has a population of 70,967 inhabitants. Laid out within medieval walls on a hill in the wide valle ...
. It was first introduced to Italy by a Dominican friar from inquisition-era Spain. But the biggest saffron cultivation in Italy is in
San Gavino Monreale San Gavino Monreale ( Sardinian: Santu ‘Engiu) is a ''comune'' (municipality) in the Province of South Sardinia in the Italian region Sardinia, located about northwest of Cagliari, and roughly halfway between the latter and the town of Oristano. ...
, Sardinia, where it is grown on 40 hectares, representing 60% of Italian production; it too has unusually high crocin, picrocrocin, and safranal content. Another is the "Mongra" or "Lacha" saffron of Kashmir (''Crocus sativus'' 'Cashmirianus'), which is among the most difficult for consumers to obtain. Repeated droughts, blights, and crop failures in Kashmir combined with an Indian export ban, contribute to its prohibitive overseas prices. Kashmiri saffron is recognizable by its dark maroon-purple hue, making it among the world's darkest. In 2020,
Kashmir Valley The Kashmir Valley, also known as the ''Vale of Kashmir'', is an intermontane valley concentrated in the Kashmir Division of the Indian- union territory of Jammu and Kashmir. The valley is bounded on the southwest by the Pir Panjal Range and ...
saffron was certified with a geographical indication from the Government of India.


Production

Almost all saffron grows in a belt from Spain in the west to
Kashmir Kashmir () is the northernmost geographical region of the Indian subcontinent. Until the mid-19th century, the term "Kashmir" denoted only the Kashmir Valley between the Great Himalayas and the Pir Panjal Range. Today, the term encompas ...
in the east. In 2014, were produced worldwide. Iran is responsible for 90–93% of global production, with much of their produce exported. In the 21st century, cultivation in Greece and Afghanistan increased. Morocco and India were minor producers. In Italy, saffron is produced primarily in
Southern Italy Southern Italy ( it, Sud Italia or ) also known as ''Meridione'' or ''Mezzogiorno'' (), is a macroregion of the Italian Republic consisting of its southern half. The term ''Mezzogiorno'' today refers to regions that are associated with the peop ...
, especially in the
Abruzzo Abruzzo (, , ; nap, label=Neapolitan language, Abruzzese Neapolitan, Abbrùzze , ''Abbrìzze'' or ''Abbrèzze'' ; nap, label=Sabino dialect, Aquilano, Abbrùzzu; #History, historically Abruzzi) is a Regions of Italy, region of Southern Italy wi ...
region, but it is also grown in significant numbers in
Basilicata it, Lucano (man) it, Lucana (woman) , population_note = , population_blank1_title = , population_blank1 = , demographics_type1 = , demographics1_footnotes = , demographics1_title1 = , demographics1_info1 = ...
, Sardegna, and Tuscany (especially in
San Gimignano San Gimignano () is a small walled medieval hill town in the province of Siena, Tuscany, north-central Italy. Known as the Town of Fine Towers, San Gimignano is famous for its medieval architecture, unique in the preservation of about a dozen of ...
). Prohibitively high labour costs and abundant Iranian imports mean that only select locales continue the tedious harvest in Austria, Germany, and Switzerland—among them the Swiss village of
Mund Mund is a former municipality in the district of Brig in the canton of Valais in Switzerland. On 1 January 2013 the former municipalities of Mund and Birgisch merged into the municipality of Naters.Gotland Gotland (, ; ''Gutland'' in Gutnish), also historically spelled Gottland or Gothland (), is Sweden's largest island. It is also a province, county, municipality, and diocese. The province includes the islands of Fårö and Gotska Sandön to the ...
), Turkey (mainly around the town of
Safranbolu Safranbolu () is a town and district of Karabük Province in the Black Sea region of Turkey. It is about 9 km north of the city of Karabük, north of Ankara and about 100 km south of the Black Sea coast. The town's historic names in Gr ...
), the United States (California and Pennsylvania). Greece is a saffron producer with a history of 3 centuries of cultivation of a saffron called ''Krokos Kozanis'', having started exports to the United States in 2017.


Trade

Saffron prices at wholesale and retail rates range from . In Western countries, the average retail price in 1974 was . In February 2013, a retail bottle containing could be purchased for $16.26 or the equivalent of , or as little as about in larger quantities. There are between . Vivid crimson colouring, slight moistness, elasticity, and lack of broken-off thread debris are all traits of fresh saffron.


Uses

Saffron has a long history of use in traditional medicine. Saffron has also been used as a fabric
dye A dye is a colored substance that chemically bonds to the substrate to which it is being applied. This distinguishes dyes from pigments which do not chemically bind to the material they color. Dye is generally applied in an aqueous solution an ...
, particularly in China and India, and in perfumery. It is used for religious purposes in India.


Consumption

Saffron's aroma is often described by connoisseurs as reminiscent of metallic honey with grassy or hay-like notes, while its taste has also been noted as hay-like and sweet. Saffron also contributes a luminous yellow-orange colouring to foods. Saffron is widely used in Persian, Indian, European, and Arab cuisines. Confectioneries and liquors also often include saffron. Saffron is used in dishes ranging from the jewelled rice and '' khoresh'' of Iran, the Milanese '' risotto'' of Italy, the '' paella'' of Spain, the '' bouillabaisse'' of France, to the '' biryani'' with various meat accompaniments in South Asia. One of the most esteemed use for saffron is in the preparation of the ''Golden Ham'', a precious dry-cured ham made with saffron from
San Gimignano San Gimignano () is a small walled medieval hill town in the province of Siena, Tuscany, north-central Italy. Known as the Town of Fine Towers, San Gimignano is famous for its medieval architecture, unique in the preservation of about a dozen of ...
. Common saffron substitutes include safflower (''Carthamus tinctorius'', which is often sold as "Portuguese saffron" or "açafrão"), annatto, and turmeric (''Curcuma longa''). In Medieval Europe, turmeric was also known as "Indian saffron" because of its yellow-orange color.


Nutrition

Dried saffron is 65%
carbohydrates 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 may ...
, 6% fat, 11% protein (table) and 12% water. In one tablespoon (2 grams; a quantity much larger than is likely to be ingested in normal use) manganese is present as 29% of the Daily Value, while other
micronutrient Micronutrients are nutrient, essential dietary elements required by organisms in varying quantities throughout life to orchestrate a range of physiological functions to maintain health. Micronutrient requirements differ between organisms; for exam ...
s have negligible content (table).


Toxicity

Ingesting less than of saffron is not toxic for humans, but doses greater than can become increasingly toxic. Mild toxicity includes dizziness, nausea, vomiting, and diarrhea, whereas at higher doses there can be reduced platelet count and spontaneous bleeding.


Storage

Saffron will not spoil, but will lose flavour within six months if not stored in an airtight, cool and dark place. Freezer storage can maintain flavour for up to two years.


Research

Genes and transcription factors involved in the pathway for carotenoid synthesis responsible for the colour, flavour and aroma of saffron were under study in 2017. Saffron constituents, such as
crocin Crocin is a carotenoid chemical compound that is found in the flowers of crocus and gardenia. Crocin is the chemical primarily responsible for the color of saffron. Chemically, crocin is the diester formed from the disaccharide gentiobiose and ...
,
crocetin Crocetin is a natural apocarotenoid dicarboxylic acid that is found in the crocus flower together with its glycoside, crocin, and '' Gardenia jasminoides'' fruits. It forms brick red crystals with a melting point of 285°C. The chemical struct ...
, and
safranal Safranal is an organic compound isolated from saffron, the spice consisting of the stigmas of crocus flowers (''Crocus sativus''). It is the constituent primarily responsible for the aroma of saffron. It is believed that safranal is a degradat ...
, were under preliminary research for their potential to affect
mental depression Depression is a mental state of low mood and aversion to activity, which affects more than 280 million people of all ages (about 3.5% of the global population). Classified medically as a mental and behavioral disorder, the experience of ...
. Saffron has also been studied for its possible effect on cardiovascular risk factors, such as lipid profile, blood glucose, weight, and in
erectile dysfunction Erectile dysfunction (ED), also called impotence, is the type of sexual dysfunction in which the penis fails to become or stay erect during sexual activity. It is the most common sexual problem in men.Cunningham GR, Rosen RC. Overview of male ...
, but there is no high-quality clinical evidence for such effects, as of 2020.


History

Some doubts remain on the origin of saffron, but it is believed that it originated in Iran. However, Greece and Mesopotamia have also been suggested as the possible region of origin. Harold McGee states that it was domesticated in or near Greece during the Bronze Age. ''C. sativus'' is possibly a triploid form of ''
Crocus cartwrightianus ''Crocus cartwrightianus'' is a species of flowering plant in the family Iridaceae, native to mainland Greece and Crete. It is a cormous perennial growing to . The flowers, in shades of lilac or white with purple veins and prominent red stigmas, ...
'', which is also known as "wild saffron". Saffron crocus slowly propagated throughout much of Eurasia and was later brought to parts of North Africa, North America, and Oceania.


West Asia

Saffron was detailed in a 7th-century BC Assyrian botanical reference compiled under
Ashurbanipal Ashurbanipal (Neo-Assyrian language, Neo-Assyrian cuneiform: , meaning "Ashur (god), Ashur is the creator of the heir") was the king of the Neo-Assyrian Empire from 669 BCE to his death in 631. He is generally remembered as the last great king o ...
. Documentation of saffron's use over the span of 3,500 years has been uncovered. Saffron-based pigments have indeed been found in 50,000-year-old depictions of prehistoric places in northwest Iran. The Sumerians later used wild-growing saffron in their remedies and magical potions. Saffron was an article of long-distance trade before the Minoan palace culture's 2nd millennium BC peak. Ancient Persians cultivated Persian saffron (''Crocus sativus'' 'Hausknechtii') in Derbent,
Isfahan Isfahan ( fa, اصفهان, Esfahân ), from its Achaemenid empire, ancient designation ''Aspadana'' and, later, ''Spahan'' in Sassanian Empire, middle Persian, rendered in English as ''Ispahan'', is a major city in the Greater Isfahan Regio ...
, and
Khorasan Khorasan may refer to: * Greater Khorasan, a historical region which lies mostly in modern-day northern/northwestern Afghanistan, northeastern Iran, southern Turkmenistan, Tajikistan, and Uzbekistan * Khorasan Province, a pre-2004 province of Ira ...
by the 10th century BC. At such sites, saffron threads were woven into textiles, ritually offered to divinities, and used in dyes, perfumes, medicines, and body washes. Saffron threads would thus be scattered across beds and mixed into hot teas as a curative for bouts of melancholy. Non-Persians also feared the Persians' usage of saffron as a drugging agent and aphrodisiac. During his Asian campaigns, Alexander the Great used Persian saffron in his infusions, rice, and baths as a curative for battle wounds. Alexander's troops imitated the practice from the Persians and brought saffron-bathing to Greece.


South Asia

Conflicting theories explain saffron's arrival in South Asia. Kashmiri and Chinese accounts date its arrival anywhere between 2500 and 900 years ago. Historians studying ancient Persian records date the arrival to sometime prior to 500 BC, attributing it to a Persian transplantation of saffron corms to stock new gardens and parks. Phoenicians then marketed Kashmiri saffron as a dye and a treatment for melancholy. Its use in foods and dyes subsequently spread throughout South Asia. Buddhist monks wear saffron-coloured robes; however, the robes are not dyed with costly saffron but turmeric, a less expensive dye, or jackfruit. Monks' robes are dyed the same colour to show equality with each other, and turmeric or ochre were the cheapest, most readily available dyes. Gamboge is also used to dye the robes.


East Asia

Some historians believe that saffron came to China with Mongol invaders from Persia. Yet it is mentioned in ancient Chinese medical texts, including the forty-volume ''
Shennong Bencaojing ''Shennong Bencaojing'' (also ''Classic of the Materia Medica'' or ''Shen-nong's Herbal Classics'' and ''Shen-nung Pen-tsao Ching''; ) is a Chinese book on agriculture and medicinal plants, traditionally attributed to Shennong. Researchers belie ...
'', a pharmacopoeia written around 300–200 BC. Traditionally credited to the legendary
Yan Emperor The Yan Emperor () or the Flame Emperor was a legendary ancient Chinese ruler in pre-dynastic times. Modern scholarship has identified the Sheep's Head Mountains (''Yángtóu Shān'') just north of Baoji in Shaanxi Province as his homeland and ...
and the deity Shennong, it discusses 252 plant-based medical treatments for various disorders. Nevertheless, around the 3rd century AD, the Chinese were referring to it as having a Kashmiri provenance. According to the herbalist Wan Zhen, "the habitat of saffron is in Kashmir, where people grow it principally to offer it to the Buddha." Wan also reflected on how it was used in his time: "The flower withers after a few days, and then the saffron is obtained. It is valued for its uniform yellow colour. It can be used to aromatise wine."


South East Mediterranean

The Minoans portrayed saffron in their palace frescoes by 1600–1500 BC; they hint at its possible use as a therapeutic drug. Ancient Greek legends told of sea voyages to
Cilicia Cilicia (); el, Κιλικία, ''Kilikía''; Middle Persian: ''klkyʾy'' (''Klikiyā''); Parthian: ''kylkyʾ'' (''Kilikiyā''); tr, Kilikya). is a geographical region in southern Anatolia in Turkey, extending inland from the northeastern coas ...
, where adventurers sought what they believed were the world's most valuable threads. Another legend tells of Crocus and Smilax, whereby Crocus is bewitched and transformed into the first saffron crocus. Ancient perfumers in Egypt, physicians in Gaza, townspeople in Rhodes, and the Greek '' hetaerae'' courtesans used saffron in their
scented water Scented water, odoriferous water,Baer, p. 43 or sweet water is a water with a sweet aromatic smell. It is made of flowers or herbs and is the precursor to the modern-day perfume. Scented waters are also used in making other products such as p ...
s, perfumes and potpourris, mascaras and ointments, divine offerings, and medical treatments. In late Ptolemaic Egypt,
Cleopatra Cleopatra VII Philopator ( grc-gre, Κλεοπάτρα Φιλοπάτωρ}, "Cleopatra the father-beloved"; 69 BC10 August 30 BC) was Queen of the Ptolemaic Kingdom of Egypt from 51 to 30 BC, and its last active ruler.She was also a ...
used saffron in her baths so that lovemaking would be more pleasurable. Egyptian healers used saffron as a treatment for all varieties of gastrointestinal ailments. Saffron was also used as a fabric dye in such Levantine cities as Sidon and Tyre in Lebanon. Aulus Cornelius Celsus prescribes saffron in medicines for wounds, cough, colic, and scabies, and in the mithridatium.


Western Europe

Saffron was a notable ingredient in certain Roman recipes such as
jusselle Jusselle was an ancient broth-based soup dish prepared using grated bread, eggs, sage and saffron. The ingredients were all boiled together in the broth. Origin The dish is believed to have originated from the dish in Ancient Roman cuisine, which ...
and
conditum Conditum, piperatum, or konditon (κόνδιτον) is a family of spiced wines in ancient Roman and Byzantine cuisine. The Latin name translates roughly as "spiced". Recipes for ''conditum viatorium'' (traveler's spiced wine) and ''conditum para ...
. (Reprinted verbatim from a rare manuscript in the Holkham Collection.) Such was the Romans' love of saffron that Roman colonists took it with them when they settled in southern Gaul, where it was extensively cultivated until Rome's fall. With this fall, European saffron cultivation plummeted. Competing theories state that saffron only returned to France with 8th-century AD Moors or with the
Avignon Avignon (, ; ; oc, Avinhon, label=Provençal dialect, Provençal or , ; la, Avenio) is the Prefectures in France, prefecture of the Vaucluse Departments of France, department in the Provence-Alpes-Côte d'Azur Regions of France, region of So ...
papacy in the 14th century AD. Similarly, the spread of Islamic civilisation may have helped reintroduce the crop to Spain and Italy. The 14th-century
Black Death The Black Death (also known as the Pestilence, the Great Mortality or the Plague) was a bubonic plague pandemic occurring in Western Eurasia and North Africa from 1346 to 1353. It is the most fatal pandemic recorded in human history, causi ...
caused demand for saffron-based medicaments to peak, and Europe imported large quantities of threads via Venetian and Genoan ships from southern and Mediterranean lands such as Rhodes. The theft of one such shipment by noblemen sparked the fourteen-week-long
Saffron War Human cultivation and use of saffron spans more than 3,500 years and extends across cultures, continents, and civilizations. Saffron, a spice derived from the dried stigmas of the saffron crocus (''Crocus sativus''), has through history remain ...
. The conflict and resulting fear of rampant saffron piracy spurred corm cultivation in Basel; it thereby grew prosperous. The crop then spread to Nuremberg, where endemic and insalubrious adulteration brought on the ''Safranschou'' code—whereby culprits were variously fined, imprisoned, and executed. Meanwhile, cultivation continued in southern France, Italy, and Spain. The Essex town of Saffron Walden, named for its new specialty crop, emerged as a prime saffron growing and trading centre in the 16th and 17th centuries but cultivation there was abandoned; saffron was re-introduced around 2013 as well as other parts of the UK (Cheshire).


The Americas

Europeans introduced saffron to the Americas when immigrant members of the
Schwenkfelder Church The Schwenkfelder Church () is a small American Christian body rooted in the 16th-century Protestant Reformation teachings of Caspar Schwenkfeld von Ossig (1489–1561). History Although followers have held the teachings of Schwenckfeld sinc ...
left Europe with a trunk containing its corms. Church members had grown it widely in Europe. By 1730, the
Pennsylvania Dutch The Pennsylvania Dutch ( Pennsylvania Dutch: ), also known as Pennsylvania Germans, are a cultural group formed by German immigrants who settled in Pennsylvania during the 17th, 18th and 19th centuries. They emigrated primarily from German-spe ...
cultivated saffron throughout eastern Pennsylvania. Spanish colonies in the Caribbean bought large amounts of this new American saffron, and high demand ensured that saffron's list price on the Philadelphia commodities exchange was equal to gold. Trade with the Caribbean later collapsed in the aftermath of the War of 1812, when many saffron-bearing merchant vessels were destroyed. Yet the Pennsylvania Dutch continued to grow lesser amounts of saffron for local trade and use in their cakes, noodles, and chicken or trout dishes. American saffron cultivation survives into modern times, mainly in
Lancaster County, Pennsylvania Lancaster County (; Pennsylvania Dutch: Lengeschder Kaundi), sometimes nicknamed the Garden Spot of America or Pennsylvania Dutch Country, is a county in the Commonwealth of Pennsylvania. It is located in the south central part of Pennsylvania. ...
.


Gallery

File:Saffronfarm-860808.jpg, Saffron Farm, Torbat-e-Heydarieh, Razavi Khorasan, Iran File:860808-Saffronfarm-02-IMG 7674-2.jpg, Saffron Farm, Torbat-e-Heydarieh, Razavi Khorasan, Iran File:860808-Saffronfarm-01-IMG 7707-2.jpg, Saffron Farm, Torbat-e-Heydarieh, Razavi Khorasan, Iran File:860808-Saffronfarm-07-IMG 7888-2.jpg, Saffron Farm, Torbat-e-Heydarieh, Razavi Khorasan, Iran File:860808-Saffronfarm-09-IMG 8077-2.jpg, Saffron Farm, Torbat-e-Heydarieh, Razavi Khorasan, Iran File:Saffron-IMG 6634-2.jpg, Saffron, from
Torbat-e Heydarieh Torbat-e Heydarieh ( fa, تربت حيدريه, also Romanized as Torbat-e Ḩeydarīyeh; also known as Torbat-e Heydari, Turbat-i-Haidari, Torbate Heydari, and Turbet-i-Haidari, and for short Torbat) is a city and capital of Torbat-e Heydarieh Co ...
, Iran File:Saffron-IMG 6603-3-2.jpg, Saffron, from
Torbat-e Heydarieh Torbat-e Heydarieh ( fa, تربت حيدريه, also Romanized as Torbat-e Ḩeydarīyeh; also known as Torbat-e Heydari, Turbat-i-Haidari, Torbate Heydari, and Turbet-i-Haidari, and for short Torbat) is a city and capital of Torbat-e Heydarieh Co ...
, Iran File:860800-Torbat-SaffronFarm-IMG 7811.jpg, Saffron Farm, Torbat-e-Heydarieh, Razavi Khorasan, Iran File:Saffron-IMG 6681-2.jpg, Saffron, from
Torbat-e Heydarieh Torbat-e Heydarieh ( fa, تربت حيدريه, also Romanized as Torbat-e Ḩeydarīyeh; also known as Torbat-e Heydari, Turbat-i-Haidari, Torbate Heydari, and Turbet-i-Haidari, and for short Torbat) is a city and capital of Torbat-e Heydarieh Co ...
, Iran File:860800-Torbat-SaffronFarm-IMG 7883.jpg, Saffron Farm, Torbat-e-Heydarieh, Razavi Khorasan, Iran File:860800-Torbat-SaffronFarm-IMG 7935.jpg, Saffron Farm, Torbat-e-Heydarieh, Razavi Khorasan, Iran File:860808-Saffronfarm-04-IMG 7840-2.jpg, Saffron Farm, Torbat-e-Heydarieh, Razavi Khorasan, Iran File:860800-Torbat-SaffronFarm-IMG 7983.jpg, Saffron Farm, Torbat-e-Heydarieh, Razavi Khorasan, Iran File:860808-Saffronfarm-03-IMG 7821-2.jpg, Saffron Farm, Torbat-e-Heydarieh, Razavi Khorasan, Iran File:860808-Saffronfarm-10-IMG 8033-2.jpg, Saffron Farm, Torbat-e-Heydarieh, Razavi Khorasan, Iran File:Saffron-IMG 6644-2.jpg, Saffron, from
Torbat-e Heydarieh Torbat-e Heydarieh ( fa, تربت حيدريه, also Romanized as Torbat-e Ḩeydarīyeh; also known as Torbat-e Heydari, Turbat-i-Haidari, Torbate Heydari, and Turbet-i-Haidari, and for short Torbat) is a city and capital of Torbat-e Heydarieh Co ...
, Iran File:Saffron-IMG 6640-2.jpg, Saffron, from
Torbat-e Heydarieh Torbat-e Heydarieh ( fa, تربت حيدريه, also Romanized as Torbat-e Ḩeydarīyeh; also known as Torbat-e Heydari, Turbat-i-Haidari, Torbate Heydari, and Turbet-i-Haidari, and for short Torbat) is a city and capital of Torbat-e Heydarieh Co ...
, Iran File:Saffron onions-IMG 7549-2.jpg, Saffron, from
Torbat-e Heydarieh Torbat-e Heydarieh ( fa, تربت حيدريه, also Romanized as Torbat-e Ḩeydarīyeh; also known as Torbat-e Heydari, Turbat-i-Haidari, Torbate Heydari, and Turbet-i-Haidari, and for short Torbat) is a city and capital of Torbat-e Heydarieh Co ...
, Iran File:860808-Saffronfarm-08-IMG 7959-2.jpg, Saffron Farm, Torbat-e-Heydarieh, Razavi Khorasan, Iran File:860808-Saffronfarm-06-IMG 7879-2.jpg, Saffron Farm, Torbat-e-Heydarieh, Razavi Khorasan, Iran


References


Bibliography

* * * * * * * * * * * * * * * * *


External links

* * {{Authority control Saffron Food colorings Incense material Arab cuisine Greek cuisine Indian spices Iranian cuisine Iraqi cuisine Spices Spanish cuisine