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From Wikipedia, the free encyclopedia

Amaranthus
Amaranthus tricolor0.jpg
A. tricolor
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Core eudicots
Order: Caryophyllales
Family: Amaranthaceae
Subfamily: Amaranthoideae
Genus: Amaranthus
L.
Species

See text

Amaranthus, collectively known as amaranth,[1] is a cosmopolitan genus of annual or short-lived perennial plants. Some amaranth species are cultivated as leaf vegetables, pseudocereals, and ornamental plants. Most of the Amaranthus species are summer annual weeds and are commonly referred to as pigweed.[2] Catkin-like cymes of densely packed flowers grow in summer or autumn.[3] Approximately 60 species are recognized, with inflorescences and foliage ranging from purple, through red and green to gold. Members of this genus share many characteristics and uses with members of the closely related genus Celosia.

"Amaranth" derives from Greek ἀμάραντος[4] (amárantos), "unfading", with the Greek word for "flower", ἄνθος (ánthos), factoring into the word's development as amaranth. Amarant is an archaic variant.

YouTube Encyclopedic

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  • How To Grow Red Amaranth - A Nutrition Powerhouse Superfood
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  • Health Benefits of Amaranth Grain
  • Useful Plant : Amaranth
  • Growing the Mighty Orange Giant Amaranth - OVER 12ft Tall with Matt Powers!! AMAZING HEIRLOOM!!

Transcription

loaded with vitamins and minerals amaranth greens are not only extremely healthy but also very delicious unlike other green leafy vegetables like spinach which are cool season crops amaranth actually grows well and warm to hot weather now it's extremely hot it might go to bolt so you can sow amaranth seeds early spring or in the fall season and as long as you don't have extremely cold temperatures amarant will sprout very quickly and grow into some healthy plants so the potting mix that were using here is a 30% peat moss 30% compost and 30% perlite with some worm castings and you can see here after two weeks the plants have emerged very well and what you need to do now is transplant these seedlings into another container or your raised beds so in this case we're going to be transplanting are seedlings into our raised bed so we're going to pick our healthiest plants and then transplant them into the raised beds just like that and as you can see here we can grow a lot of amaranth in this raised bed this is a 4'x4' raised bed you can see I'm growing about 30 plants or so in this raised bed and as you can see here the plant looks very healthy now amaranth doesn't really require any fertilizers as long as you have a lot of good organic material in your soil amaranth greens will grow very well and produce these nice-looking leaves this is the red leaf amaranth and both the leaves as well as the seeds of the amaranth plant are edible and the seeds just like quinoa are very high in protein and tastes like true grains and the leaves are very much edible as well and after 40 days of sowing we're going to be harvesting our greens are amaranth greens and to harvest them just snip the top part of the plant and what will happen is after your harvest the plant will send out more shoots from the sides and your amaranth plant will keep growing into a bigger plant so as you can see here these leaves look beautiful there are a lot of leaves that are growing here now some of your leaves might have a green color and that's perfectly fine it's just a different of variety of a plant but it's stil amaranth and as you can see here these leaves look beautiful they are large leaves and the leaves are also very nutritious they're mostly used in stirred fries and soups amaranth leaves are also a great source of vitamins and minerals they are rich in calcium iron potassium and magnesium and it's also gluten-free so for those of you were looking for a gluten-free alternative amaranth leaves and amaranth seeds are a great option and amaranth also has some other medicinal properties it lowers your cholesterol it's known to be good for your heart and it has anti-inflammatory properties and it's great if you have aching and inflamed muscles it's also rich in antioxidants and it improves immunity and amaranth leaves were traditionally eaten for easier digestion so it's also said to improve your digestion so a lot of good health benefits in amarantth so you might want to include it as a part of your diet for good health amaranth is also very high in fiber so it's a good addition if you want to increase the fiber in your diet and amaranth seeds are also a good source of protein so all in all this is a great plant and some people call it a superfood because it's very nutrition dense it provides a lot of vitamins and minerals and there we have it folks that was our episode on growing the red amaranth plant and i hope you give it a shot it's very nutritious and it's very delicious and you might also like watching some of our other videos to your left we have a video on growing two spinach varieties and on the right we have another video on growing amaranth and i hope you like these two videos we'll see you again soon happy gardening

Contents

Taxonomy

 Skull shapes made of amaranth and honey for Day of the Dead in Mexico
Skull shapes made of amaranth and honey for Day of the Dead in Mexico
 Traditional Mexican candy made with amaranth
Traditional Mexican candy made with amaranth

Amaranthus shows a wide variety of morphological diversity among and even within certain species. Although the family (Amaranthaceae) is distinctive, the genus has few distinguishing characters among the 70 species included.[5] This complicates taxonomy and Amaranthus has generally been considered among systematists as a "difficult" genus.[6]

Formerly, Sauer (1955) classified the genus into two subgenera, differentiating only between monoecious and dioecious species: Acnida (L.) Aellen ex K.R. Robertson and Amaranthus.[6] Although this classification was widely accepted, further infrageneric classification was (and still is) needed to differentiate this widely diverse group.

Currently, Amaranthus includes three recognized subgenera and 70 species, although species numbers are questionable due to hybridization and species concepts.[7] Infrageneric classification focuses on inflorescence, flower characters and whether a species is monoecious/dioecious, as in the Sauer (1955) suggested classification.[5] A modified infrageneric classification of Amaranthus was published by Mosyakin & Robertson (1996) and includes three subgenera: Acnida, Amaranthus, and Albersia. The taxonomy is further differentiated by sections within each of the subgenera.[8]

Species

Species include:[9]

Nutrition

Amaranth, uncooked
Nutritional value per 100 g (3.5 oz)
Energy 1,554 kJ (371 kcal)
65.25 g
Starch 57.27 g
Sugars 1.69 g
Dietary fiber 6.7 g
7.02 g
Saturated 1.459 g
Monounsaturated 1.685 g
Polyunsaturated 2.778 g
13.56 g
Tryptophan 0.181 g
Threonine 0.558 g
Isoleucine 0.582 g
Leucine 0.879 g
Lysine 0.747 g
Methionine 0.226 g
Cystine 0.191 g
Phenylalanine 0.542 g
Tyrosine 0.329 g
Valine 0.679 g
Arginine 1.060 g
Histidine 0.389 g
Alanine 0.799 g
Aspartic acid 1.261 g
Glutamic acid 2.259 g
Glycine 1.636 g
Proline 0.698 g
Serine 1.148 g
Vitamins
Thiamine (B1)
(10%)
0.116 mg
Riboflavin (B2)
(17%)
0.2 mg
Niacin (B3)
(6%)
0.923 mg
Pantothenic acid (B5)
(29%)
1.457 mg
Vitamin B6
(45%)
0.591 mg
Folate (B9)
(21%)
82 μg
Vitamin C
(5%)
4.2 mg
Vitamin E
(8%)
1.19 mg
Minerals
Calcium
(16%)
159 mg
Iron
(59%)
7.61 mg
Magnesium
(70%)
248 mg
Manganese
(159%)
3.333 mg
Phosphorus
(80%)
557 mg
Potassium
(11%)
508 mg
Sodium
(0%)
4 mg
Zinc
(30%)
2.87 mg
Other constituents
water 11.13 g

Percentages are roughly approximated using US recommendations for adults.
Source: USDA Nutrient Database

One cup (2.4 dl, 245 g) of cooked amaranth grain (from about 65 g raw) provides 251 calories and is an excellent source (20% or more of the Daily Value, DV) of protein, dietary fiber, and some dietary minerals. Amaranth is particularly rich in manganese (105% DV), magnesium (40% DV), iron (29% DV), and selenium (20% DV).[10]

Cooked amaranth leaves are an excellent source of vitamin A, vitamin C, calcium, manganese, and folate.[11]

Amaranth does not contain gluten,[12][13][14] so it may be a healthy and less expensive alternative to ingredients traditionally used in gluten-free products.[13] It has high biological value[12] and its benefits are not limited to people with gluten-related disorders, but are applicable to the general population.[15] Quantity and quality of proteins of amaranth are superior to those of wheat.[13] It also contains higher concentrations of folic acid than wheat (102 µg/100 g in amaranth vs. 40 µg/100 g in wheat), and its fiber and minerals contents are higher than those of other cereals.[13]

Amaranth contains phytochemicals that may be antinutrient factors, such as polyphenols, saponins, tannins, and oxalates which are reduced in content and effect by cooking.[16][17]

Human uses

History

Known to the Aztecs as huauhtli,[18] amaranth is thought to have represented up to 80% of their energy consumption before the Spanish conquest. Another important use of amaranth throughout Mesoamerica was to prepare ritual drinks and foods. To this day, amaranth grains are toasted much like popcorn and mixed with honey, molasses, or chocolate to make a treat called alegría, meaning "joy" in Spanish. Diego Durán described the festivities for Huitzilopochtli, the name of which means "hummingbird of the left side" or "left-handed hummingbird" (Real hummingbirds feed on amaranth flowers). The Aztec month of Panquetzaliztli (7 December to 26 December) was dedicated to Huitzilopochtli. People decorated their homes and trees with paper flags; ritual races, processions, dances, songs, prayers, and finally human sacrifices were held. This was one of the more important Aztec festivals, and the people prepared for the whole month. They fasted or ate very little; a statue of the god was made out of amaranth seeds and honey, and at the end of the month, it was cut into small pieces so everybody could eat a little piece of the god. After the Spanish conquest, cultivation of amaranth was outlawed, while some of the festivities were subsumed into the Christmas celebration.

Because of its importance as a symbol of indigenous culture, its gluten-free palatability, ease of cooking, and a protein that is particularly well-suited to human nutritional needs, interest in grain amaranth (especially A. cruentus and A. hypochondriacus) revived in the 1970s. It was recovered in Mexico from wild varieties and is now commercially cultivated. It is a popular snack sold in Mexico, sometimes mixed with chocolate or puffed rice, and its use has spread to Europe and parts of North America. Amaranth and quinoa are not grasses and are called pseudocereals because of their similarities to cereals in flavor and cooking.

Seed

Several species are raised for amaranth "grain" in Asia and the Americas.

Ancient amaranth grains still used include the three species, Amaranthus caudatus, Amaranthus cruentus, and Amaranthus hypochondriacus.[19] Although amaranth was cultivated on a large scale in ancient Mexico, Guatemala, and Peru, nowadays it is only cultivated on a small scale there, along with India, China, Nepal, and other tropical countries; thus, the potential exists for further cultivation in those countries, as well as in the U.S. In a 1977 article in Science, amaranth was described as "the crop of the future".[20] It has been proposed as an inexpensive native crop that could be cultivated by indigenous people in rural areas for several reasons:

  • It is easily harvested.
  • Its seeds are a good source of protein.[21][22]
  • In cooked and edible forms, amaranth retains adequate content of several dietary minerals.[23]
  • It is easy to cook.
  • As befits its weedy life history, amaranth grains grow rapidly and, in three cultivated species of amaranth, their large seedheads can weigh up to 1 kg and contain a half-million small seeds.[22]

Leaves, roots, and stems

Amaranth species are cultivated and consumed as a leaf vegetable in many parts of the world. Four species of Amaranthus are documented as cultivated vegetables in eastern Asia: Amaranthus cruentus, Amaranthus blitum, Amaranthus dubius, and Amaranthus tricolor.[24]

In Indonesia and Malaysia, leaf amaranth is called bayam. In the Philippines, the Ilocano word for the plant is kalunay; the Tagalog word for the plant is kilitis or kulitis. In Uttar Pradesh and Bihar in India, it is called chaulai and is a popular green leafy vegetable (referred to in the class of vegetable preparations called saag). It is called chua in Kumaun area of Uttarakhand, where it is a popular red-green vegetable. In Karnataka in India, it is called harive. It is used to prepare curries such as hulee, palya, majjigay-hulee, and so on. In Kerala, it is called cheera and is consumed by stir-frying the leaves with spices and red chillies to make cheera thoran. In Tamil Nadu, it is called mulaikkira and is regularly consumed as a favourite dish, where the greens are steamed, and mashed, with light seasoning of salt, red chili, and cumin. It is called keerai masial. In Andhra Pradesh, this leaf is added in preparation of a popular dal called thotakura pappu in (Telugu). In Maharashtra, it is called shravani maath and is available in both red and white colour. In Orissa, it is called khada saga, it is used to prepare saga bhaja, in which the leaf is fried with chili and onions.

In China, the leaves and stems are used as a stir-fry vegetable, or in soups. In Vietnam, it is called rau dền and is used to make soup. Two species are popular as edible vegetable in Vietnam: dền đỏ- Amaranthus tricolor and dền cơm or dền trắng- Amaranthus viridis.

A traditional food plant in Africa, amaranth has the potential to improve nutrition, boost food security, foster rural development and support sustainable land care.[25]

In Bantu regions of Uganda and western Kenya, it is known as doodo or litoto.[26] It is also known among the Kalenjin as a drought crop (chepkerta). In Lingala (spoken in the Congo), it is known as lɛngalɛnga or bítɛkutɛku.[27] In Nigeria, it is a common vegetable and goes with all Nigerian starch dishes. It is known in Yoruba as shoko a short form of shokoyokoto (meaning make the husband fat) or arowo jeja (meaning "we have money left over for fish"). In the Caribbean, the leaves are called bhaji in Trinidad and callaloo in Jamaica, and are sautéed with onions, garlic, and tomatoes, or sometimes used in a soup called pepperpot soup. In Botswana, it is referred to as morug and cooked as a staple green vegetable.

In Greece, green amaranth (A. viridis) is a popular dish called βλήτα, vlita or vleeta. It is boiled, then served with olive oil and lemon juice like a salad, sometimes alongside fried fish. Greeks stop harvesting the plant (which also grows wild) when it starts to bloom at the end of August.

In Brazil, green amaranth was, and to a degree still is, frequently regarded as an invasive species as all other species of amaranth (except the generally imported A. caudatus cultivar), though some have traditionally appreciated it as a leaf vegetable, under the names of caruru or bredo, which is consumed cooked, generally accompanying the staple food, rice and beans.

Oil

Making up about 5% of the total fatty acids of amaranth, squalene[28] is extracted as a vegetable-based alternative to the more expensive shark oil for use in dietary supplements and cosmetics.[29]

Dyes

The flowers of the 'Hopi Red Dye' amaranth were used by the Hopi (a tribe in the western United States) as the source of a deep red dye. Also a synthetic dye was named "amaranth" for its similarity in color to the natural amaranth pigments known as betalains. This synthetic dye is also known as Red No. 2 in North America and E123 in the European Union.[30]

Ornamentals

 Amaranthus flowering
Amaranthus flowering

The genus also contains several well-known ornamental plants, such as Amaranthus caudatus (love-lies-bleeding), a vigorous, hardy annual with dark purplish flowers crowded in handsome drooping spikes. Another Indian annual, A. hypochondriacus (prince's feather), has deeply veined, lance-shaped leaves, purple on the under face, and deep crimson flowers densely packed on erect spikes.

Amaranths are recorded as food plants for some Lepidoptera (butterfly and moth) species including the nutmeg moth and various case-bearer moths of the genus Coleophora: C. amaranthella, C. enchorda (feeds exclusively on Amaranthus), C. immortalis (feeds exclusively on Amaranthus), C. lineapulvella, and C. versurella (recorded on A. spinosus).

Ecology

Amaranth weed species have an extended period of germination, rapid growth, and high rates of seed production,[2] and have been causing problems for farmers since the mid-1990s. This is partially due to the reduction in tillage, reduction in herbicidal use and the evolution of herbicidal resistance in several species where herbicides have been applied more often.[31] The following 9 species of Amaranthus are considered invasive and noxious weeds in the U.S and Canada: A. albus, A. blitoides, A. hybridus, A. palmeri, A. powellii, A. retroflexus, A. spinosus, A. tuberculatus, and A. viridis.[32]

A new herbicide-resistant strain of Amaranthus palmeri has appeared; it is glyphosate-resistant and so cannot be killed by herbicides using the chemical. Also, this plant can survive in tough conditions. This could be of particular concern to cotton farmers using glyphosate-resistant cotton.[33] The species Amaranthus palmeri (Palmer amaranth) causes the greatest reduction in soybean yields and has the potential to reduce yields by 17-68% in field experiments.[2] Palmer amaranth is among the "top five most troublesome weeds" in the southeast of the United States and has already evolved resistances to dinitroaniline herbicides and acetolactate synthase inhibitors.[34] This makes the proper identification of Amaranthus species at the seedling stage essential for agriculturalists. Proper weed control needs to be applied before the species successfully colonizes in the crop field and causes significant yield reductions.

Images

See also

References

  1. ^ "Amaranthaceae | plant family". Retrieved 2015-06-02. 
  2. ^ a b c Bensch et al. (2003). Interference of redroot pigweed (Amaranthus retroflexus), Palmer amaranth (A. palmeri), and common waterhemp (A. rudis) in soybean. Weed Science 51: 37–43.
  3. ^ RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964. 
  4. ^ ἀμάραντος. Liddell, Henry George; Scott, Robert; A Greek–English Lexicon at the Perseus Project
  5. ^ a b Juan; et al. (2007). "Electrophoretic characterization of Amaranthus L. seed proteins and its systematic implication". Botanical Journal of the Linnean Society. 155: 57–63. doi:10.1111/j.1095-8339.2007.00665.x. 
  6. ^ a b Costea M, DeMason D (2001). "Stem morphology and anatomy in Amaranthus L. (Amaranthaceae)- Taxonomic significance". Journal of the Torrey Botanical Society. 128 (3): 254–281. JSTOR 3088717. doi:10.2307/3088717. 
  7. ^ Judd et al. (2008). Plant Systematics: A Phylogenetic Approach, Third Edition. Sinauer Associates, Inc. Sunderland, MA
  8. ^ Mosyakin & Robertson (1996). "New infrageneric taxa and combinations in Amaranthus (Amaranthaceae)". Ann. Bot. Fennici. 33: 275–281. 
  9. ^ a b "Search results — The Plant List". theplantlist.org. 
  10. ^ "Amaranth grain, cooked". USDA National Nutrient Database, release SR-28. 2015. Retrieved 4 February 2016. 
  11. ^ "Amaranth leaves, cooked, boiled, drained, without salt, per 100 g". Conde Nast for the USDA National Nutrient Database, release SR-21. 2015. Retrieved 4 February 2016. 
  12. ^ a b Lamacchia C, Camarca A, Picascia S, Di Luccia A, Gianfrani C (Jan 29, 2014). "Cereal-based gluten-free food: how to reconcile nutritional and technological properties of wheat proteins with safety for celiac disease patients". Nutrients (Review). 6 (2): 575–90. PMC 3942718Freely accessible. PMID 24481131. doi:10.3390/nu6020575. 
  13. ^ a b c d Penagini F, Dilillo D, Meneghin F, Mameli C, Fabiano V, Zuccotti GV (Nov 18, 2013). "Gluten-free diet in children: an approach to a nutritionally adequate and balanced diet". Nutrients (Review). 5 (11): 4553–65. PMC 3847748Freely accessible. PMID 24253052. doi:10.3390/nu5114553. 
  14. ^ Gallagher, E.; T. R. Gormley; E. K. Arendt. "Recent advances in the formulation of gluten-free cereal-based products" (PDF). Trends in Food Science & Technology (Review). 15 (3–4): 143–152. doi:10.1016/j.tifs.2003.09.012. 
  15. ^ Rahaie S, Gharibzahedi SM, Razavi SH, Jafari SM (2014). "Recent developments on new formulations based on nutrient-dense ingredients for the production of healthy-functional bread: a review". J Food Sci Technol (Review). 51 (11): 2896–906. PMC 4571229Freely accessible. PMID 26396285. doi:10.1007/s13197-012-0833-6. 
  16. ^ "Legacy: The Official Newsletter of Amaranth Institute" (PDF). Amaranth Institute. 1992. pp. 6–9. 
  17. ^ Hotz C, Gibson RS (2007). "Traditional food-processing and preparation practices to enhance the bioavailability of micronutrients in plant-based diets". J Nutr. 137 (4): 1097–100. PMID 17374686. 
  18. ^ Coe, S.D. (1994). America's First Cuisines. University of Texas Press. ISBN 9780292711594. 
  19. ^ Costea et al. (2006). Delimitation of A. cruentus L. and A. caudatus L. using micromorphology and AFLP analysis: an application in germplasm identification. Genetic Resources and Crop Evolution 53: 1625-1633.
  20. ^ Marx (1977). Speaking of Science: Amaranth: A Comeback for the Food of the Aztecs? Science 198(4312): 40.
  21. ^ De Macvean & Pöll (1997). Chapter 8: Ethnobotany. Tropical Tree Seed Manual, USDA Forest Service, edt. J.A Vozzo.
  22. ^ a b Tucker, J. (1986). Amaranth: the once and future crop. Bioscience 36(1): 9-13.
  23. ^ "USDA National Nutrient Database: cooked amaranth grain per 100 grams; Full report". 2014. Retrieved 30 November 2015. 
  24. ^ Costea (2003). Notes on Economic Plants. Economic Botany 57(4): 646-649
  25. ^ National Research Council (2006-10-27). "Amaranth". Lost Crops of Africa: Volume II: Vegetables. Lost Crops of Africa. 2. National Academies Press. ISBN 978-0-309-10333-6. OCLC 34344933. Retrieved 2008-07-15. 
  26. ^ Goode, P. M. (1989). Edible plants of Uganda. Food and Agriculture Organization of the United Nations. pp. 25–6. ISBN 9789251027134. 
  27. ^ Enama, M. (1994). "Culture: The missing nexus in ecological economics perspective". Ecological Economics. 10 (10): 93–95. doi:10.1016/0921-8009(94)00010-7. 
  28. ^ He, Han-Ping; Cai, Yizhong; Sun, Mei; Corke, Harold (2002). "Extraction and Purification of Squalene from Amaranthus Grain". Journal of Agricultural and Food Chemistry. 50 (2): 368–372. ISSN 0021-8561. doi:10.1021/jf010918p. 
  29. ^ "Squalene Market Size to Exceed USD 240 Million by 2022". Global Market Insights Inc. 27 April 2016. Retrieved 14 December 2016. 
  30. ^ "The following color additives are not authorized for use in food products in the United States: (1) Amaranth (C.I. 16185, EEC No. E123, formerly certifiable as FD&C red No. 2);" FDA/CFSAN Food Compliance Program: Domestic Food Safety Program
  31. ^ Wetzel et al. (1999). Use of PCR-based molecular markers to identify weedy Amaranthus species. Weed Science 47: 518-523.
  32. ^ USDA Plant Database. Plants Profile- Amaranthus L
  33. ^ "Herbicide Resistant Weeds Causing Problems for US Cotton Growers". organicconsumers.org. 
  34. ^ Culpepper et al. (2006). Glyphosate-resistant Palmer amaranth (Amaranthus palmeri) confirmed in Georgia. Weed Science 54: 620-626.

Further reading

External links

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