Species belonging to the genus ''Amaranthus'' have been cultivated for their

grain A grain is a small, hard, dry fruit (caryopsis) – with or without an attached hull layer – harvested for human or animal consumption. A grain crop is a grain-producing plant. The two main types of commercial grain crops are cereals and legum ...

s for 8,000 years.

Amaranth ''Amaranthus'' is a cosmopolitan genus of annual or short-lived perennial plants collectively known as amaranths. Some amaranth species are cultivated as leaf vegetables, pseudocereals, and ornamental plants. Catkin-like cymes of densely pack ...

plants are classified as

pseudocereal A pseudocereal or pseudograin is one of any non-grasses that are used in much the same way as cereals (true cereals are grasses). Pseudocereals can be further distinguished from other non-cereal staple crops (such as potatoes) by their being pro ...

s that are grown for their edible starchy seeds, but they are not in the same botanical family as true

cereal A cereal is any Poaceae, grass cultivated for the edible components of its grain (botanically, a type of fruit called a caryopsis), composed of the endosperm, Cereal germ, germ, and bran. Cereal Grain, grain crops are grown in greater quantit ...

s, such as

wheat Wheat is a grass widely cultivated for its seed, a cereal grain that is a worldwide staple food. The many species of wheat together make up the genus ''Triticum'' ; the most widely grown is common wheat (''T. aestivum''). The archaeologi ...

and

rice Rice is the seed of the grass species ''Oryza sativa'' (Asian rice) or less commonly ''Oryza glaberrima ''Oryza glaberrima'', commonly known as African rice, is one of the two domesticated rice species. It was first domesticated and grown i ...

. Amaranth species that are still used as a grain are ''

Amaranthus caudatus ''Amaranthus caudatus'' (also known as ''Amaranthus edulis'' and ''Amaranthus mantegazzianus'') is a species of annual flowering plant. It goes by common names such as love-lies-bleeding, pendant amaranth, tassel flower, velvet flower, foxtail a ...

'' L., ''

Amaranthus cruentus ''Amaranthus cruentus'' is a flowering plant species that yields the nutritious staple amaranth grain. It is one of three ''Amaranthus'' species cultivated as a grain source, the other two being ''Amaranthus hypochondriacus'' and '' Amaranthus c ...

'' L., and ''

Amaranthus hypochondriacus ''Amaranthus hypochondriacus'' is an ornamental plant commonly known as Prince-of-Wales feather or prince's-feather. Originally endemic to Mexico, it is called ''quelite, bledo'' and ''quintonil'' in Spanish. In Africa and El Salvador, like many ...

'' L''.'' The yield of grain amaranth is comparable to

maize Maize ( ; ''Zea mays'' subsp. ''mays'', from es, maíz after tnq, mahiz), also known as corn (North American and Australian English), is a cereal grain first domesticated by indigenous peoples in southern Mexico about 10,000 years ago. Th ...

. The grain was a

staple food A staple food, food staple, or simply a staple, is a food that is eaten often and in such quantities that it constitutes a dominant portion of a standard diet for a given person or group of people, supplying a large fraction of energy needs and ...

of the

Aztec The Aztecs () were a Mesoamerican culture that flourished in central Mexico in the post-classic period from 1300 to 1521. The Aztec people included different Indigenous peoples of Mexico, ethnic groups of central Mexico, particularly those g ...

s and an integral part of Aztec religious ceremonies. The cultivation of amaranth was banned by the

conquistadores Conquistadors (, ) or conquistadores (, ; meaning 'conquerors') were the explorer-soldiers of the Spanish Empire, Spanish and Portuguese Empires of the 15th and 16th centuries. During the Age of Discovery, conquistadors sailed beyond Europe to ...

upon their conquest of the Aztec nation. However, the plant has grown as a

weed A weed is a plant considered undesirable in a particular situation, "a plant in the wrong place", or a plant growing where it is not wanted.Harlan, J. R., & deWet, J. M. (1965). Some thoughts about weeds. ''Economic botany'', ''19''(1), 16-24. ...

since then, so its genetic base has been largely maintained.

Research Research is "creativity, creative and systematic work undertaken to increase the stock of knowledge". It involves the collection, organization and analysis of evidence to increase understanding of a topic, characterized by a particular att ...

on grain amaranth began in the United States in the 1970s. By the end of the 1970s, a few thousand acres were being cultivated there, and continue to be cultivated. Much of the amaranth grain currently grown is sold in health food shops. Grain amaranth is also grown as a

food crop A crop is a plant that can be grown and harvested extensively for profit or subsistence. When the plants of the same kind are cultivated at one place on a large scale, it is called a crop. Most crops are cultivated in agriculture or hydroponics ...

in limited areas of Mexico, where it is used to make a

candy Candy, also called sweets (British English) or lollies (Australian English Australian English (AusE, AusEng, AuE, AuEng, en-AU) is the set of varieties of the English language native to Australia. It is the country's common language an ...

called '' alegría'' (

Spanish Spanish might refer to: * Items from or related to Spain: **Spaniards are a nation and ethnic group indigenous to Spain **Spanish language, spoken in Spain and many Latin American countries **Spanish cuisine Other places * Spanish, Ontario, Can ...

for ''joy'') at

festival A festival is an event ordinarily celebrated by a community and centering on some characteristic aspect or aspects of that community and its religion or cultures. It is often marked as a local or national holiday, mela, or eid. A festival c ...

times. In other preparations, the grain can be popped like popcorn and then either mixed with honey, or served with milk, dried fruit and nuts like a cold

breakfast cereal Cereal, formally termed breakfast cereal (and further categorized as cold cereal or warm cereal), is a traditional breakfast food made from processed cereal grains. It is traditionally eaten as part of breakfast, or a snack food, primarily in ...

. Amaranth grain can also be used to extract

amaranth oil Amaranth oil is extracted from the seeds of two species of the genus ''Amaranthus'' — '' A. cruentus'' and '' A. hypochondriacus'' — that are called, collectively, amaranth grain. Amaranth oil is a light-to-medium-colored, clear liquid that is ...

, a pressed seed oil with commercial uses.

Nutritional analysis

Raw amaranth grain is inedible to humans and cannot be digested because it blocks the absorption of nutrients. Thus it has to be prepared and cooked like other grains. In a amount, cooked amaranth provides of

food energy Food energy is chemical energy that animals (including humans) derive from their food to sustain their metabolism, including their muscle, muscular activity. Most animals derive most of their energy from aerobic respiration, namely combining the ...

and is a moderately rich source of

dietary minerals In the context of nutrition, a mineral is a chemical element required as an essential nutrient by organisms to perform functions necessary for life. However, the four major structural elements in the human body by weight (oxygen, hydrogen, carbon, ...

, including

phosphorus Phosphorus is a chemical element with the symbol P and atomic number 15. Elemental phosphorus exists in two major forms, white phosphorus and red phosphorus, but because it is highly reactive, phosphorus is never found as a free element on Ear ...

manganese Manganese is a chemical element with the symbol Mn and atomic number 25. It is a hard, brittle, silvery metal, often found in minerals in combination with iron. Manganese is a transition metal with a multifaceted array of industrial alloy use ...

, and

iron Iron () is a chemical element with symbol Fe (from la, ferrum) and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, right in f ...

. Cooked amaranth is 75% water, 19%

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 ...

, 4%

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 ...

, and 2%

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 ...

(table). According to Educational Concerns for Hunger Organization (ECHO), amaranth leaves are nutritious, and "amounts of vitamin C, iron, beta carotene, calcium, folic acid and protein are especially high," however, amaranth leaves contain

anti-nutritional factor Antinutrients are natural or synthetic compounds that interfere with the absorption of nutrients. Nutrition studies focus on antinutrients commonly found in food sources and beverages. Antinutrients may take the form of drugs, chemicals that natura ...

s, including

oxalate Oxalate (IUPAC: ethanedioate) is an anion with the formula C2O42−. This dianion is colorless. It occurs naturally, including in some foods. It forms a variety of salts, for example sodium oxalate (Na2C2O4), and several esters such as dimethyl o ...

nitrate Nitrate is a polyatomic ion A polyatomic ion, also known as a molecular ion, is a covalent bonded set of two or more atoms, or of a metal complex, that can be considered to behave as a single unit and that has a net charge that is not zer ...

saponin Saponins (Latin "sapon", soap + "-in", one of), also selectively referred to as triterpene glycosides, are bitter-tasting usually toxic plant-derived organic chemicals that have a foamy quality when agitated in water. They are widely distributed ...

s, and phenolic compounds. Cooking methods such as boiling the leaves in water and then discarding the water may reduce toxic effects. The report also cites a study indicating that "research has shown that consumption of 200 grams of cooked amaranth poses no health problems." Amaranth grain is high in protein and

lysine Lysine (symbol Lys or K) is an α-amino acid that is a precursor to many proteins. It contains an α-amino group (which is in the protonated form under biological conditions), an α-carboxylic acid group (which is in the deprotonated −C ...

, an

amino acid Amino acids are organic compounds that contain both amino and carboxylic acid functional groups. Although hundreds of amino acids exist in nature, by far the most important are the alpha-amino acids, which comprise proteins. Only 22 alpha am ...

found in low quantities in other grains. According to the

FAO The Food and Agriculture Organization of the United Nations (FAO)french: link=no, Organisation des Nations unies pour l'alimentation et l'agriculture; it, Organizzazione delle Nazioni Unite per l'Alimentazione e l'Agricoltura is an intern ...

, amaranth grain as a source of protein is "superior in content and quality to traditional cereals." Amaranth grain is deficient in essential amino acids such as

leucine Leucine (symbol Leu or L) is an essential amino acid that is used in the biosynthesis of proteins. Leucine is an α-amino acid, meaning it contains an α-amino group (which is in the protonated −NH3+ form under biological conditions), an α- ca ...

and

threonine Threonine (symbol Thr or T) is an amino acid that is used in the biosynthesis of proteins. It contains an α-amino group (which is in the protonated −NH form under biological conditions), a carboxyl group (which is in the deprotonated −COO� ...

– both of which are present in wheat germ. Amaranth grain is free of

gluten Gluten is a structural protein naturally found in certain cereal grains. Although "gluten" often only refers to wheat proteins, in medical literature it refers to the combination of prolamin and glutelin proteins naturally occurring in all grain ...

, which makes it a viable grain for people with

gluten intolerance Gluten-related disorders is the term for the diseases triggered by gluten, including celiac disease (CD), non-celiac gluten sensitivity (NCGS), gluten ataxia, dermatitis herpetiformis (DH) and wheat allergy. The umbrella category has also been ...

. The table below presents nutritional values of cooked, edible form of amaranth grain to cooked, edible form of wheat grain.

Cultivation

There are about 75 species in the genus ''Amaranthus''. Many species of amaranth grain are hardy plants, showing resistance to changes in pH, salt content, environment, temperature, and drought. Amaranth grains have genetic diversity and adaptive ability. Some examples of Amaranth species are ''Amaranthus albus, Amaranthus blitoides, Amaranthus hybridus, Amaranthus palmeri, Amaranthus powellii, Amaranthus retroflexus, Amaranthus spinosus, Amaranthus tuberculatus,'' and ''Amaranthus viridis''. ''

Amaranthus retroflexus ''Amaranthus retroflexus'' is a species of flowering plant in the family Amaranthaceae with several common names, including red-root amaranth, redroot pigweed, red-rooted pigweed, common amaranth, pigweed amaranth, and common tumbleweed. page 47 ...

,'' "pigweed," is a wild amaranth species native to the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

and is considered a weed in the Northeast, Nebraska and Great Plains, South, and West. The name derives from the plant's tendency to sprout where hogs are pasture-fed. Although both its leaves and its seeds are edible, pigweed amaranth has not been cultivated as a food crop.

Cultural uses

The

Aztecs The Aztecs () were a Mesoamerican culture that flourished in central Mexico in the post-classic period from 1300 to 1521. The Aztec people included different Indigenous peoples of Mexico, ethnic groups of central Mexico, particularly those g ...

cultivated amaranth as a staple grain crop in what is now Mexico during the

pre-Columbian In the history of the Americas, the pre-Columbian era spans from the original settlement of North and South America in the Upper Paleolithic period through European colonization, which began with Christopher Columbus's voyage of 1492. Usually, th ...

period. Amaranth was used by the Aztecs for

tamale A tamale, in Spanish tamal, is a traditional Mesoamerican dish made of masa, a dough made from nixtamalized corn, which is steamed in a corn husk or banana leaf. The wrapping can either be discarded prior to eating or used as a plate. Tamale ...

tortillas A tortilla (, ) is a thin, circular unleavened flatbread originally made from maize hominy meal, and now also from wheat flour. The Aztecs and other Nahuatl speakers called tortillas ''tlaxcalli'' (). First made by the indigenous peoples of M ...

, and

atole ''Atole'' (, from Nahuatl '' ātōlli'' ), also known as ''atolli'' and ''atol de elote'', is a traditional hot corn- and masa-based beverage of Mexican origin. Chocolate ''atole'' is known as ''champurrado'' or ''atole''. It typically accom ...

(hot cereal). In addition they formed shaped images of their gods with amaranth, agave, and maize during the sacred month of Huitzilopochtli. At the end of the month, the statues were eaten by the families to "take the god into them". When the Spanish prohibited religious acts like this, and imposed the religion of their God who was worshiped through wheat, amaranth cultivation decreased. In current Mexican culture on the

Day of the Dead The Day of the Dead ( es, Día de Muertos or ''Día de los Muertos'') is a holiday traditionally celebrated on November 1 and 2, though other days, such as October 31 or November 6, may be included depending on the locality. It is widely obser ...

, amaranth seeds are offered as

snack food A snack is a small portion of food generally Eating, eaten between meals. Snacks come in a variety of forms including packaged snack foods and other processed foods, as well as items made from fresh ingredients at home. Traditionally, snack ...

s for the spirits. Edible skulls were historically made with amaranth seeds, although today they are made out of sugar.

Gallery

File:Common Amaranth or Redroot Pigweed (Amaranthus retroflexus).jpg, ''Amaranthus retroflexus'', known as "pigweed" File:Día_de_muertos.jpg, Skull shapes made of amaranth and honey for

in Mexico File:Amaranth Grain.jpg, Amaranth grain from Nepal

References

{{Reflist Crops originating from Pre-Columbian North America Crops originating from Mexico Amaranthus Pseudocereals