Tarragon

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Tarragon
Estragon 1511.jpg
Status TNC G5.svg
Secure  (NatureServe)
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Artemisia
Species:
A. dracunculus
Binomial name
Artemisia dracunculus
L. [1] not Hook.f. 1881
Synonyms [2]
Synonymy
  • Achillea dracunculusHort. ex Steud.
  • Artemisia aromaticaA.Nelson
  • Artemisia cernuaNutt.
  • Artemisia changaicaKrasch.
  • Artemisia dracunculoidesPursh
  • Artemisia glaucaPall. ex Willd.
  • Artemisia inodoraHook. & Arn.
  • Artemisia inodoraWilld.
  • Artemisia nutansPursh
  • Artemisia nuttallianaBesser
  • Artemisia redowskyiLedeb.
  • Draconia dracunculus(L.) Soják
  • Dracunculus esculentusGarsault
  • Oligosporus dracunculiformis(Krasch.) Poljakov
  • Oligosporus dracunculus(L.) Poljakov
  • Oligosporus glaucus(Pall. ex Willd.) Poljakov
  • Artemisia dracunculinaS.Watson

Tarragon (Artemisia dracunculus), also known as estragon, is a species of perennial herb in the family Asteraceae. It is widespread in the wild across much of Eurasia and North America and is cultivated for culinary and medicinal purposes. [3] [4] [5] [6]

Contents

One subspecies, Artemisia dracunculus var. sativa, is cultivated to use the leaves as an aromatic culinary herb. In some other subspecies, the characteristic aroma is largely absent. Informal names for distinguishing the variations include "French tarragon" (best for culinary use) and "Russian tarragon".

Tarragon grows to 120–150 centimetres (4–5 feet) tall, with slender branches. The leaves are lanceolate, 2–8 cm (1–3 in) long and 2–10 mm (1⁄8–3⁄8 in) broad, glossy green, with an entire margin. The flowers are produced in small capitula 2–4 mm (1⁄16–3⁄16 in) diameter, each capitulum containing up to 40 yellow or greenish-yellow florets. French tarragon, however, seldom produces any flowers (or seeds). [7] Some tarragon plants produce seeds that are generally sterile. Others produce viable seeds. Tarragon has rhizomatous roots that it uses to spread and readily reproduce.

Cultivation

Dried tarragon leaves Dried Taragon.JPG
Dried tarragon leaves

French tarragon is the variety used for cooking in the kitchen [8] and is not grown from seed, as the flowers are sterile; instead, it is propagated by root division.

Russian tarragon (A. dracunculoides L.) can be grown from seed but is much weaker in flavor when compared to the French variety. [7] However, Russian tarragon is a far more hardy and vigorous plant, spreading at the roots and growing over a meter tall. This tarragon actually prefers poor soils and happily tolerates drought and neglect. It is not as intensely aromatic and flavorsome as its French cousin, but it produces many more leaves from early spring onwards that are mild and good in salads and cooked food. Russian tarragon loses what flavor it has as it ages and is widely considered useless as a culinary herb, though it is sometimes used in crafts. The young stems in early spring can be cooked as an asparagus substitute. Horticulturists recommend that Russian tarragon be grown indoors from seed and planted in summer. The spreading plants can be divided easily.

A better substitute for Russian tarragon is Mexican tarragon ( Tagetes lucida ), also known as Mexican mint marigold, Texas tarragon, or winter tarragon. [9] It is much more reminiscent of French tarragon, with a hint of anise. Although not in the same genus as the other tarragons, Mexican tarragon has a more robust flavor than Russian tarragon that does not diminish significantly with age. It can not however be grown as a perennial in cold climates.

Health

Tarragon has a flavor and odor profile reminiscent of anise due largely to the presence of estragole, a known carcinogen and teratogen in mice. Estragole concentration in fresh tarragon leaves is about 2900 mg/kg. [10] However, a European Union investigation concluded that the danger of estragole is minimal. [11] Research studying rat livers found a BMDL10 (Approximately the dose that would cause a 10% Increase in background tumour rate) of estragole to be 3.3–6.5 mg/kg body weight per day, which for a 80 kg human would be ~400 mg per day, or 130 g of fresh tarragon leaves per day. As use as a culinary herb, a typical quantity used in a dish could be 5 grams of fresh leaves. Estragole, along with other oils that provide tarragon its flavour, are highly volatile and will vapourise as the leaf is dried, reducing both the health risk and the useability of the herb.

Several other herbs, such as Basil, also contain estragole.

Uses

Culinary use

In Syria, Syrians eat fresh tarragon with white Syrian cheese. Syrians also use it with Syrian dishes such as shish barak and kibbeh labaniyeh.

In Iran, tarragon is used as a side dish in sabzi khordan(fresh herbs), or in stews and Persian-style pickles, particularly khiar shoor (pickled cucumbers). [12]

Tarragon is one of the four fines herbes of French cooking and is particularly suitable for chicken, fish, and egg dishes. Tarragon is the main flavoring component of Béarnaise sauce. Fresh, lightly bruised tarragon sprigs are steeped in vinegar to produce tarragon vinegar. Pounded with butter, it produces an excellent topping for grilled salmon or beef.

Tarragon is used to flavor a popular carbonated soft drink in Armenia, Azerbaijan, Georgia (where it originally comes from), and, by extension, Russia, Ukraine and Kazakhstan. The drink, named Tarkhun, is made out of sugar, carbonated water, and tarragon leaves which give it its signature green color. [13]

Tarragon is one of the main ingredients in Chakapuli, a Georgian national dish. [14]

In Slovenia, tarragon is used in a variation of the traditional nut roll sweet cake, called potica. In Hungary, a popular chicken soup is flavored with tarragon.

Chemistry

Gas chromatography/mass spectrometry analysis has revealed that A. dracunculus oil contains predominantly phenylpropanoids such as estragole (16.2%), methyl eugenol (35.8%), and trans-anethole (21.1%). [15] The other major constituents were terpenes and terpenoids, including α-trans-ocimene (20.6%), limonene (12.4%), α-pinene (5.1%), allo-ocimene (4.8%), methyl eugenol (2.2%), β-pinene (0.8%), α-terpinolene (0.5%), bornyl acetate (0.5%) and bicyclogermacrene (0.5%). [16] The organic compound capillin was initially isolated from Artemisia capillaris in 1956. [17]

cis-Pellitorin, an isobutyramide eliciting a pungent taste, has been isolated from the tarragon plant. [18]

Name

The plant is commonly known as dragon in Swedish and Dutch. The use of Dragon for the herb or plant in German is outdated. [19] The species name, dracunculus, means "little dragon", and the plant seems to be so named due to its coiled roots. [20] See Artemisia for the genus name derivative.

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References

  1. ↑ Artemisia dracunculus was described in Linnaeus's Species Plantarum 2:849. 1753. "Artemisia dracunculus". Germplasm Resources Information Network . Agricultural Research Service, United States Department of Agriculture . Retrieved 2017-12-11.
  2. ↑ "Artemisia dracunculus". The Global Compositae Checklist (GCC)– via The Plant List. Note that this website has been superseded by World Flora Online
  3. ↑ Shultz, Leila M. (2006). "Artemisia dracunculus". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 19. New York and Oxford: Oxford University Press – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  4. ↑ Lin, Yourun; Humphries, Christopher J.; Gilbert, Michael G. "Artemisia dracunculus". Flora of China. Vol. 20–21 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  5. ↑ "Artemisia dracunculus L.". Flora of Pakistan. Missouri Botanical Garden . Retrieved 2018-08-19– via Tropicos.org.
  6. ↑ "Artemisia dracunculus [Assenzio dragoncello] - Flora Italiana". luirig.altervista.org. Retrieved 23 April 2019.
  7. 1 2 McGee, R. M.; Stuckey, M. (2002). The Bountiful Container. Workman Publishing. ISBN   978-0-7611-1623-3.
  8. ↑ Yeoman, Andrew (25 April 2014). "French Tarragon". FineGardening. Retrieved 23 April 2019.
  9. ↑ Raghavan, Susheela (2006). Handbook of Spices, Seasonings, and Flavorings. CRC Press. p. 178. ISBN   9781420004366.
  10. ↑ Zeller, A.; Rychlik, M. (2007). "Impact of estragole and other odorants on the flavour of anise and tarragon". Flavour and Fragrance Journal. 22 (2): 105–113. doi: 10.1002/ffj.1765 .
  11. ↑ Committee on Herbal Medicinal Products (2015-03-31). "Public statement on the use of herbal medicinal products containing estragole" (PDF). European Medicines Agency (Rev 1): 3. Retrieved 25 November 2016.
  12. ↑ "Sabzi Khordan (Persian Herb Platter)". Cooks Without Borders. Cooks Without Borders. Retrieved 19 October 2024.
  13. ↑ Goldstein, Darra (July 1999). The Georgian Feast: The Vibrant Culture and Savory Food of the Republic of Georgia. University of California Press. p. 43. ISBN   0520219295.
  14. ↑ Feiring, Alice (March 2016). For the Love of Wine: My Odyssey Through the World's Most Ancient Wine Culture. U of Nebraska Press. pp. 62–63. ISBN   978-1-61234-838-4.
  15. ↑ Lopes-Lutz, D. S.; Alviano, D. S.; Alviano, C. S.; Kolodziejczyk, P. P. (2008). "Screening of chemical composition, antimicrobial and antioxidant activities of Artemisia essential oils". Phytochemistry. 69 (8): 1732–1738. Bibcode:2008PChem..69.1732L. doi:10.1016/j.phytochem.2008.02.014. PMID   18417176.
  16. ↑ Sayyah, M.; Nadjafnia, L.; Kamalinejad, M. (2004). "Anticonvulsant activity and chemical composition of Artemisia dracunculus L. Essential oil". Journal of Ethnopharmacology. 94 (2–3): 283–287. doi:10.1016/j.jep.2004.05.021. PMID   15325732.
  17. ↑ Nash, B. W.; Thomas, D. A.; Warburton, W. K.; Williams, Thelma D. (1965). "535. The preparation of capillin and some related compounds, and of some substituted pent-4-en-2-yn-1-ones". J. Chem. Soc. 46: 2983–2988. doi:10.1039/JR9650002983. PMID   14289815.
  18. ↑ Gatfield, I. L.; Ley, J. P.; Foerstner, J.; Krammer, G.; Machinek, A. Production of cis-pellitorin and use as a flavouring. Archived 2012-08-05 at archive.today World Patent WO2004000787 A2
  19. ↑ "Dragon". Duden . Retrieved 4 June 2022.
  20. ↑ "Little Dragon". Whole Spice. Retrieved 3 October 2020.
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