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121-401: Quinoa ( Chenopodium quinoa ; / ˈ k iː n . w ɑː , k i ˈ n oʊ . ə / , from Quechua kinwa or kinuwa ) is a flowering plant in the amaranth family . It is a herbaceous annual plant grown as a crop primarily for its edible seeds ; the seeds are rich in protein , dietary fiber , B vitamins and dietary minerals in amounts greater than in many grains. Quinoa

242-526: A 100 g ( 3 + 1 ⁄ 2  oz) serving of raw quinoa seeds has a food energy of 1,539 kJ (368 kcal) and is a rich source (20% or higher of the Daily Value , DV) of protein, dietary fiber , several B vitamins , including 46%   DV for folate , and for several dietary minerals such as magnesium (55%   DV), manganese (95%   DV), phosphorus (65%   DV), and zinc (33%   DV) (table). After boiling, which

363-401: A covalent bond known as a glycosidic linkage formed via a dehydration reaction , resulting in the loss of a hydrogen atom from one monosaccharide and a hydroxyl group from the other. The formula of unmodified disaccharides is C 12 H 22 O 11 . Although there are numerous kinds of disaccharides, a handful of disaccharides are particularly notable. Sucrose , pictured to the right,

484-577: A 1979 study, its presumed ancestor is either Chenopodium berlandieri , from North America, or the Andean species Ch. hircinum , although more recent studies, in 2011, even suggest Old World relatives. On the other hand, morphological features relate Ch.   quinoa of the Andes and Ch. nuttalliae of Mexico. Some studies have suggested that both species may have been derived from the same wild type. A weedy quinoa, Ch.   quinoa var. melanospermum ,

605-458: A German botanist who studied plants from South America, brought back by explorers Alexander von Humboldt and Aimé Bonpland . The genus name Chenopodium is composed of two words coming from the Greek χήν,-νός, goose and πόδῖον, podion "little foot", or "goose foot", because of the resemblance of the leaves with the trace of a goose's foot. The specific epithet quinoa is a borrowing from

726-413: A balanced diet that includes six one-ounce servings of grain foods each day, at least half from whole grain sources and the rest are from enriched . The glycemic index (GI) and glycemic load concepts have been developed to characterize food behavior during human digestion. They rank carbohydrate-rich foods based on the rapidity and magnitude of their effect on blood glucose levels. Glycemic index

847-615: A commercial scale. Quinoa plants do best in sandy, well-drained soils with a low nutrient content, moderate salinity, and a soil pH of 6 to   8.5. The seedbed must be well prepared and drained to avoid waterlogging. Rotation is used in its Andean native range. Rotation is common with potato , cereals and legumes including Lupinus mutabilis . Quinoa has gained attention for its adaptability to contrasting environments such as saline soils, nutrient-poor soils and drought stressed marginal agroecosystems. Yields are maximised when 170–200 kg/ha (150–180 lb/acre) of nitrogen

968-511: A complex picture. The degree to which individual producers benefit from the global quinoa boom depends on its mode of production , for example through producer associations and co-operatives such as the Asociación Nacional de Productores de Quinua (founded in the 1970s), contracting through vertically integrated private firms, or wage labor. State regulation and enforcement may promote a shift to cash-cropping among some farmers and

1089-517: A component of DNA , is a modified version of ribose ; chitin is composed of repeating units of N-acetyl glucosamine , a nitrogen -containing form of glucose. Carbohydrates are polyhydroxy aldehydes, ketones, alcohols, acids, their simple derivatives and their polymers having linkages of the acetal type. They may be classified according to their degree of polymerization , and may be divided initially into three principal groups, namely sugars, oligosaccharides and polysaccharides. Monosaccharides are

1210-399: A form of carbohydrate storage in animal livers, was discovered by French physiologist Claude Bernard . Formerly the name "carbohydrate" was used in chemistry for any compound with the formula C m (H 2 O) n . Following this definition, some chemists considered formaldehyde (CH 2 O) to be the simplest carbohydrate, while others claimed that title for glycolaldehyde . Today,

1331-1048: A fourth, a northern or Peruvian branch. The latter causes complications in the classification, however, as various dialects (e.g. Cajamarca–Cañaris , Pacaraos , and Yauyos ) have features of both Quechua I and Quechua II, and so are difficult to assign to either. Torero classifies them as the following: Willem Adelaar adheres to the Quechua I / Quechua II (central/peripheral) bifurcation. But, partially following later modifications by Torero, he reassigns part of Quechua II-A to Quechua I: Ancash (Huaylas–Conchucos) Alto Pativilca–Alto Marañón–Alto Huallaga Yaru Wanka (Jauja–Huanca) Yauyos–Chincha (Huangáscar–Topará) Pacaraos Lambayeque (Cañaris) Cajamarca Lincha Laraos Kichwa ("Ecuadorian" or Highlands and Oriente) Chachapoyas (Amazonas) Lamas (San Martín) Ayacucho Cusco Puno (Collao) Northern Bolivian (Apolo) Southern Bolivia Santiago del Estero Landerman (1991) does not believe

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1452-467: A goal of 55–75% of total energy from carbohydrates, but only 10% directly from sugars (their term for simple carbohydrates). A 2017 Cochrane Systematic Review concluded that there was insufficient evidence to support the claim that whole grain diets can affect cardiovascular disease. Nutritionists often refer to carbohydrates as either simple or complex. However, the exact distinction between these groups can be ambiguous. The term complex carbohydrate

1573-402: A greater rate of pollination and ensure, or improve, seed dissemination. The fruits (seeds) are about 2 mm ( 1 ⁄ 16  in) in diameter and of various colors — from white to red or black, depending on the cultivar . In regards to the "newly" developed salinity resistance of C.   quinoa , some studies have concluded that accumulation of organic osmolytes plays a dual role for

1694-591: A hydrogen–oxygen atom ratio of 2:1 (as in water) and thus with the empirical formula C m (H 2 O) n (where m may or may not be different from n ), which does not mean the H has covalent bonds with O (for example with CH 2 O , H has a covalent bond with C but not with O). However, not all carbohydrates conform to this precise stoichiometric definition (e.g., uronic acids , deoxy-sugars such as fucose ), nor are all chemicals that do conform to this definition automatically classified as carbohydrates (e.g., formaldehyde and acetic acid ). The term

1815-423: A low gastrointestinal irritant. In South America, these saponins have many uses, including as a detergent for clothing and washing, and as a folk medicine antiseptic for skin injuries. Additionally, the leaves and stems of all species of the genus Chenopodium and related genera of the family Amaranthaceae , including quinoa, contain high levels of oxalic acid . The plant's growth is highly variable due to

1936-479: A monosaccharide often coexists with a closed ring form where the aldehyde / ketone carbonyl group carbon (C=O) and hydroxyl group (–OH) react forming a hemiacetal with a new C–O–C bridge. Monosaccharides can be linked together into what are called polysaccharides (or oligosaccharides ) in a large variety of ways. Many carbohydrates contain one or more modified monosaccharide units that have had one or more groups replaced or removed. For example, deoxyribose ,

2057-561: A more interesting commodity and global excitement for it increased. At this point, Bolivia and Peru were the only major producers of quinoa. In 2013, there was an extreme increase in imports of quinoa by the United States, Canada and various European countries. In 2016, growth began to slow. Imports were still increasing but at a slower rate and quinoa prices declined as other countries began producing it. By 2015, over 75 countries were producing quinoa, as opposed to only eight countries in

2178-553: A potential for increased yields in controlled environments, it has been selected as an experimental crop in NASA 's Controlled Ecological Life Support System for long-duration human occupied space flights . In their natural state, the seeds have a coating that contains bitter-tasting saponins , making them unpalatable . Most of the grain sold commercially has been processed to remove this coating. This bitterness has beneficial effects during cultivation, as it deters birds and, therefore,

2299-547: A reference point, the overall degree of diversity across the family is a little less than that of the Romance or Germanic families, and more of the order of Slavic or Arabic . The greatest diversity is within Central Quechua, or Quechua I, which is believed to lie close to the homeland of the ancestral Proto-Quechua language. Alfredo Torero devised the traditional classification, the three divisions above, plus

2420-467: A rich source of the dietary minerals manganese (30%   DV) and phosphorus (22%   DV). However, cooked quinoa is reduced to being just a moderate source (10–19%   DV) of dietary fiber and folate (11%), as well as of the dietary minerals iron (11%), magnesium (18%), and zinc (11%). (table). Quinoa is gluten-free . Because quinoa has a high concentration of protein and is a good source of many micronutrients , has versatility in preparation, and

2541-443: A shift toward subsistence production among others, while enabling many urban refugees to return to working the land , outcomes with complex and varied social effects. The growth of quinoa consumption outside of its indigenous region has raised concerns over food security of the original consumers, unsustainably intensive farming of the crop, expansion of farming into otherwise marginal agricultural lands with concurrent loss of

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2662-591: A significant influence on other native languages of the Americas, such as Mapuche . It is difficult to measure the number of Quechua speakers. The number of speakers given varies widely according to the sources. The total in Ethnologue 16 is 10 million, primarily based on figures published 1987–2002, but with a few dating from the 1960s. The figure for Imbabura Highland Quechua in Ethnologue , for example,

2783-468: A symmetric molecule with no stereo centers. The assignment of D or L is made according to the orientation of the asymmetric carbon furthest from the carbonyl group: in a standard Fischer projection if the hydroxyl group is on the right the molecule is a D sugar, otherwise it is an L sugar. The "D-" and "L-" prefixes should not be confused with "d-" or "l-", which indicate the direction that the sugar rotates plane polarized light . This usage of "d-" and "l-"

2904-680: A traditional, quinoa-based diet, whether because quinoa is held to be worth too much to keep for oneself and one's family, or because processed foods have higher status despite their poorer nutritional value . Efforts are being made in some areas to distribute quinoa more widely and ensure that farming and poorer populations have access to it and have an understanding of its nutritional importance, including use in free school breakfasts and government provisions distributed to pregnant and nursing women in need. In terms of wider social consequences, research on traditional producers in Bolivia has emphasised

3025-599: A true genetic classification is possible and divides Quechua II so that the family has four geographical–typological branches: Northern, North Peruvian, Central, and Southern. He includes Chachapoyas and Lamas in North Peruvian Quechua so Ecuadorian is synonymous with Northern Quechua. Quechua I (Central Quechua, Waywash ) is spoken in Peru's central highlands, from the Ancash Region to Huancayo . It

3146-421: A wide variety of metabolic pathways across species: plants synthesize carbohydrates from carbon dioxide and water by photosynthesis storing the absorbed energy internally, often in the form of starch or lipids . Plant components are consumed by animals and fungi , and used as fuel for cellular respiration . Oxidation of one gram of carbohydrate yields approximately 16 kJ (4 kcal) of energy , while

3267-471: A wide variety of natural and processed foods. Starch is a polysaccharide and is abundant in cereals (wheat, maize, rice), potatoes, and processed food based on cereal flour , such as bread , pizza or pasta. Sugars appear in human diet mainly as table sugar (sucrose, extracted from sugarcane or sugar beets ), lactose (abundant in milk), glucose and fructose, both of which occur naturally in honey , many fruits , and some vegetables. Table sugar, milk, or honey

3388-691: Is O -β-D-galactopyranosyl-(1→4)-D-glucopyranose. Other notable disaccharides include maltose (two D-glucoses linked α-1,4) and cellobiose (two D-glucoses linked β-1,4). Disaccharides can be classified into two types: reducing and non-reducing disaccharides. If the functional group is present in bonding with another sugar unit, it is called a reducing disaccharide or biose. Oligosaccharides are saccharide polymers composed of three to ten units of monosaccharides, connected via glycosidic linkages , similar to disaccharides . They are usually linked to lipids or amino acids glycosic linkage with oxygen or nitrogen to form glygolipids and glycoproteins , though some, like

3509-459: Is 300,000, an estimate from 1977. The missionary organization FEDEPI, on the other hand, estimated one million Imbabura dialect speakers (published 2006). Census figures are also problematic, due to under-reporting. The 2001 Ecuador census reports only 500,000 Quechua speakers, compared to the estimate in most linguistic sources of more than 2 million. The censuses of Peru (2007) and Bolivia (2001) are thought to be more reliable. Additionally, there

3630-624: Is a measure of how quickly food glucose is absorbed, while glycemic load is a measure of the total absorbable glucose in foods. The insulin index is a similar, more recent classification method that ranks foods based on their effects on blood insulin levels, which are caused by glucose (or starch) and some amino acids in food. Low-carbohydrate diets may miss the health advantages – such as increased intake of dietary fiber – afforded by high-quality carbohydrates found in legumes and pulses , whole grains , fruits, and vegetables. A "meta-analysis, of moderate quality," included as adverse effects of

3751-713: Is a secondary division in Quechua II between the grammatically simplified northern varieties of Ecuador, Quechua II-B, known there as Kichwa , and the generally more conservative varieties of the southern highlands, Quechua II-C, which include the old Inca capital of Cusco . The closeness is at least in part because of the influence of Cusco Quechua on the Ecuadorean varieties in the Inca Empire. Because Northern nobles were required to educate their children in Cusco, this

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3872-483: Is a structural component of the cell wall of plants and many forms of algae. Ribose is a component of RNA . Deoxyribose is a component of DNA . Lyxose is a component of lyxoflavin found in the human heart. Ribulose and xylulose occur in the pentose phosphate pathway . Galactose , a component of milk sugar lactose , is found in galactolipids in plant cell membranes and in glycoproteins in many tissues . Mannose occurs in human metabolism, especially in

3993-428: Is an aldopentose (a five-carbon aldehyde), and fructose is a ketohexose (a six-carbon ketone). Each carbon atom bearing a hydroxyl group (-OH), with the exception of the first and last carbons, are asymmetric , making them stereo centers with two possible configurations each (R or S). Because of this asymmetry, a number of isomers may exist for any given monosaccharide formula. Using Le Bel-van't Hoff rule ,

4114-441: Is an important component of coenzymes (e.g., ATP , FAD and NAD ) and the backbone of the genetic molecule known as RNA . The related deoxyribose is a component of DNA. Saccharides and their derivatives include many other important biomolecules that play key roles in the immune system , fertilization , preventing pathogenesis , blood clotting , and development . Carbohydrates are central to nutrition and are found in

4235-455: Is an unknown number of speakers in emigrant communities. There are significant differences among the varieties of Quechua spoken in the central Peruvian highlands and the peripheral varieties of Ecuador, as well as those of southern Peru and Bolivia. They can be labeled Quechua I (or Quechua B, central) and Quechua II (or Quechua A, peripheral). Within the two groups, there are few sharp boundaries, making them dialect continua . However, there

4356-435: Is available. The addition of phosphorus does not improve yield. The genome of quinoa was sequenced in 2017. Through traditional selective breeding and, potentially, genetic engineering , the plant is being modified to have higher crop yield , improved tolerance to heat and biotic stress , and greater sweetness through saponin inhibition. Traditionally, quinoa grain is harvested by hand, and only rarely by machine, because

4477-530: Is calculated in the USDA database and does not always correspond to the sum of the sugars, the starch, and the "dietary fiber". Carbohydrate metabolism is the series of biochemical processes responsible for the formation , breakdown and interconversion of carbohydrates in living organisms . The most important carbohydrate is glucose , a simple sugar ( monosaccharide ) that is metabolized by nearly all known organisms. Glucose and other carbohydrates are part of

4598-464: Is known from South America, but no equivalent closely related to Ch.   nutalliae has been reported from Mexico so far. Studies regarding the genetic diversity of quinoa suggest that it may have passed through at least three bottleneck genetic events, with a possible fourth expected: Over the last 5,000   years the biogeography of Ch. quinoa has changed greatly, mainly by human influence, convenience and preference. It has changed not only in

4719-449: Is limited evidence to support routine use of low-carbohydrate dieting in managing type 1 diabetes . The American Diabetes Association recommends that people with diabetes should adopt a generally healthy diet, rather than a diet focused on carbohydrate or other macronutrients. An extreme form of low-carbohydrate diet – the ketogenic diet – is established as a medical diet for treating epilepsy . Through celebrity endorsement during

4840-474: Is most common in biochemistry , where it is a synonym of saccharide (from Ancient Greek σάκχαρον ( sákkharon )  'sugar' ), a group that includes sugars , starch , and cellulose . The saccharides are divided into four chemical groups: monosaccharides , disaccharides , oligosaccharides , and polysaccharides . Monosaccharides and disaccharides, the smallest (lower molecular weight ) carbohydrates, are commonly referred to as sugars. While

4961-421: Is no longer followed in carbohydrate chemistry. The aldehyde or ketone group of a straight-chain monosaccharide will react reversibly with a hydroxyl group on a different carbon atom to form a hemiacetal or hemiketal , forming a heterocyclic ring with an oxygen bridge between two carbon atoms. Rings with five and six atoms are called furanose and pyranose forms, respectively, and exist in equilibrium with

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5082-564: Is not a grass but rather a pseudocereal botanically related to spinach and amaranth ( Amaranthus spp.), and originated in the Andean region of northwestern South America. It was first used to feed livestock 5,200–7,000 years ago, and for human consumption 3,000–4,000 years ago in the Lake Titicaca basin of Peru and Bolivia. The plant thrives at high elevations and produces seeds that are rich in protein. Almost all production in

5203-454: Is not clear how low-carbohydrate dieting affects cardiovascular health , although two reviews showed that carbohydrate restriction may improve lipid markers of cardiovascular disease risk. Carbohydrate-restricted diets are no more effective than a conventional healthy diet in preventing the onset of type 2 diabetes , but for people with type 2 diabetes, they are a viable option for losing weight or helping with glycemic control . There

5324-496: Is often added to drinks and many prepared foods such as jam, biscuits and cakes. Cellulose , a polysaccharide found in the cell walls of all plants, is one of the main components of insoluble dietary fiber . Although it is not digestible by humans, cellulose and insoluble dietary fiber generally help maintain a healthy digestive system by facilitating bowel movements . Other polysaccharides contained in dietary fiber include resistant starch and inulin , which feed some bacteria in

5445-399: Is partially due to the attention it received as a food that may help alleviate food insecurity in some world regions. Quinoa is high in protein , which makes it a possible alternative to meat for vegetarians and vegans, and for people who are lactose intolerant . It also has high concentrations of dietary minerals . Quinoa does not contain gluten . Some of these qualities may have improved

5566-464: Is prepared, individual differences in metabolism, and the chemistry of the carbohydrate. Carbohydrates are sometimes divided into "available carbohydrates", which are absorbed in the small intestine and "unavailable carbohydrates", which pass to the large intestine , where they are subject to fermentation by the gastrointestinal microbiota . The USDA's Dietary Guidelines for Americans 2010 call for moderate- to high-carbohydrate consumption from

5687-463: Is required in the early steps of glycolysis to phosphorylate Glucose to Glucose 6-Phosphate ( G6P ) and Fructose 6-Phosphate ( F6P ) to Fructose 1,6-biphosphate ( FBP ), thereby pushing the reaction forward irreversibly. In some cases, as with humans, not all carbohydrate types are usable as the digestive and metabolic enzymes necessary are not present. Carbohydrate chemistry is a large and economically important branch of organic chemistry. Some of

5808-608: Is similar to that of coastal Chile where the crop has been grown for centuries. Due to the short growing season, North American cultivation requires short-maturity varieties, typically of Bolivian origin. Quinoa is planted in Idaho where a variety developed and bred specifically for the high-altitude Snake River Plain is the largest planted variety in North America. Several countries within Europe have successfully grown quinoa on

5929-438: Is the metabolic reaction which cells undergo to break down larger molecules, extracting energy. There are two major metabolic pathways of monosaccharide catabolism : glycolysis and the citric acid cycle . In glycolysis, oligo- and polysaccharides are cleaved first to smaller monosaccharides by enzymes called glycoside hydrolases . The monosaccharide units can then enter into monosaccharide catabolism. A 2 ATP investment

6050-450: Is the most abundant disaccharide, and the main form in which carbohydrates are transported in plants. It is composed of one D-glucose molecule and one D-fructose molecule. The systematic name for sucrose, O -α-D-glucopyranosyl-(1→2)-D-fructofuranoside, indicates four things: Lactose , a disaccharide composed of one D-galactose molecule and one D-glucose molecule, occurs naturally in mammalian milk. The systematic name for lactose

6171-431: Is the most diverse branch of Quechua, to the extent that its divisions are commonly considered different languages. Quechua II (Peripheral Quechua, Wamp'una "Traveler") This is a sampling of words in several Quechuan languages: Carbohydrates A carbohydrate ( / ˌ k ɑːr b oʊ ˈ h aɪ d r eɪ t / ) is a biomolecule consisting of carbon (C), hydrogen (H) and oxygen (O) atoms, usually with

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6292-413: Is the typical preparation for eating the seeds, many nutritional evaluations change. Although a 100 g ( 3 + 1 ⁄ 2  oz) serving of cooked quinoa increases to 72% water, most nutritional evaluations are reduced, such as, 21% carbohydrates, 4% protein, and 2% fat, and the food energy of cooked quinoa is reduced to 503 kJ (120 kcal). Although similarly reduced, cooked quinoa remains

6413-699: Is three or more. A typical monosaccharide has the structure H–(CHOH) x (C=O)–(CHOH) y –H, that is, an aldehyde or ketone with many hydroxyl groups added, usually one on each carbon atom that is not part of the aldehyde or ketone functional group . Examples of monosaccharides are glucose , fructose , and glyceraldehydes . However, some biological substances commonly called "monosaccharides" do not conform to this formula (e.g., uronic acids and deoxy-sugars such as fucose ) and there are many chemicals that do conform to this formula but are not considered to be monosaccharides (e.g., formaldehyde CH 2 O and inositol (CH 2 O) 6 ). The open-chain form of

6534-539: The Peruvian struggle for independence in the 1780s. As a result, various Quechua languages are still widely spoken today, being co-official in many regions and the most spoken language lineage in Peru , after Spanish. The Quechua linguistic homeland may have been Central Peru. It has been speculated that it may have been used in the Chavín and Wari civilizations. Quechua had already expanded across wide ranges of

6655-543: The University of San Marcos , completed and defended the first thesis in the language group in 2019; it concerned the works of poet Andrés Alencastre Gutiérrez and it was also the first non-Spanish native language thesis done at that university. Currently, there are different initiatives that promote Quechua in the Andes and across the world: many universities offer Quechua classes, a community-based organization such as Elva Ambía 's Quechua Collective of New York promote

6776-535: The glycosylation of certain proteins. Fructose , or fruit sugar, is found in many plants and humans, it is metabolized in the liver, absorbed directly into the intestines during digestion , and found in semen . Trehalose , a major sugar of insects, is rapidly hydrolyzed into two glucose molecules to support continuous flight. Two joined monosaccharides are called a disaccharide , the simplest kind of polysaccharide. Examples include sucrose and lactose . They are composed of two monosaccharide units bound together by

6897-1078: The lac operon will express enzymes for the digestion of lactose when it is present, but if both lactose and glucose are present the lac operon is repressed, resulting in the glucose being used first (see: Diauxie ). Polysaccharides are also common sources of energy. Many organisms can easily break down starches into glucose; most organisms, however, cannot metabolize cellulose or other polysaccharides like chitin and arabinoxylans . These carbohydrate types can be metabolized by some bacteria and protists. Ruminants and termites , for example, use microorganisms to process cellulose. Even though these complex carbohydrates are not very digestible, they represent an important dietary element for humans, called dietary fiber . Fiber enhances digestion, among other benefits. The Institute of Medicine recommends that American and Canadian adults get between 45 and 65% of dietary energy from whole-grain carbohydrates. The Food and Agriculture Organization and World Health Organization jointly recommend that national dietary guidelines set

7018-486: The microbiota of the large intestine , and are metabolized by these bacteria to yield short-chain fatty acids . In scientific literature , the term "carbohydrate" has many synonyms, like "sugar" (in the broad sense), "saccharide", "ose", "glucide", "hydrate of carbon" or " polyhydroxy compounds with aldehyde or ketone ". Some of these terms, especially "carbohydrate" and "sugar", are also used with other meanings. In food science and in many informal contexts,

7139-769: The raffinose series and the fructooligosaccharides , do not. They have roles in cell recognition and cell adhesion . Carbohydrate consumed in food yields 3.87 kilocalories of energy per gram for simple sugars, and 3.57 to 4.12 kilocalories per gram for complex carbohydrate in most other foods. Relatively high levels of carbohydrate are associated with processed foods or refined foods made from plants, including sweets, cookies and candy, table sugar, honey, soft drinks, breads and crackers, jams and fruit products, pastas and breakfast cereals. Lower amounts of digestible carbohydrate are usually associated with unrefined foods as these foods have more fiber, including beans, tubers, rice, and unrefined fruit . Animal-based foods generally have

7260-687: The scientific nomenclature of carbohydrates is complex, the names of the monosaccharides and disaccharides very often end in the suffix -ose , which was originally taken from the word glucose (from Ancient Greek γλεῦκος ( gleûkos )  'wine, must '), and is used for almost all sugars (e.g., fructose (fruit sugar), sucrose ( cane or beet sugar), ribose , lactose (milk sugar)). Carbohydrates perform numerous roles in living organisms. Polysaccharides serve as an energy store (e.g., starch and glycogen ) and as structural components (e.g., cellulose in plants and chitin in arthropods and fungi). The 5-carbon monosaccharide ribose

7381-649: The "quinoa bust" because of the devastation the price fall caused for farmers and industry. Rising quinoa prices over the period of 2006 to 2017 may have reduced the affordability of quinoa to traditional consumers. However, a 2016 study using Peru's Encuesta Nacional de Hogares found that rising quinoa prices during 2004–2013 led to net economic benefits for producers, and other commentary indicated similar conclusions, including for women specifically. It has also been suggested that as quinoa producers rise above subsistence-level income , they switch their own consumption to Western processed foods which are often less healthy than

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7502-448: The -OH substituent on the anomeric carbon rests on the opposite side ( trans ) of the ring from the CH 2 OH side branch. The alternative form, in which the CH 2 OH substituent and the anomeric hydroxyl are on the same side (cis) of the plane of the ring, is called the β anomer . Monosaccharides are the major fuel source for metabolism , being used both as an energy source ( glucose being

7623-498: The 1980s. Particularly for the high variety of Chilean landraces, in addition to how the plant has adapted to different latitudes, this crop is now potentially cultivable almost anywhere in the world. Quechuan languages Although Quechua began expanding many centuries before the Incas , that previous expansion also meant that it was the primary language family within the Inca Empire. The Spanish also tolerated its use until

7744-589: The Americas. As a result of Inca expansion into Central Chile , there were bilingual Quechua- Mapudungu Mapuche in Central Chile at the time of the Spanish arrival . It has been argued that Mapuche, Quechua, and Spanish coexisted in Central Chile , with significant bilingualism, during the 17th century. Alongside Mapudungun, Quechua is the indigenous language that has influenced Chilean Spanish

7865-420: The Andean region is done by small farms and associations. Its cultivation has spread to more than 70 countries, including Kenya, India, the United States and European countries. As a result of increased popularity and consumption in North America, Europe, and Australasia , quinoa crop prices tripled between 2006 and 2014. The species Chenopodium quinoa was first described by Carl Ludwig Willdenow (1765–1812),

7986-448: The Andes, lead to sterilization of the pollen. Rainfall requirements are highly variable between the different cultivars, ranging from 300 to 1,000 mm (12 to 39 in) during the growing season . Growth is optimal with well-distributed rainfall during early growth and no rain during seed maturation and harvesting. Quinoa has been cultivated in the United States, primarily in the high elevation San Luis Valley of Colorado where it

8107-611: The Inca Empire expanded and further promoted Quechua as the official language of the Empire. After the Spanish conquest of Peru in the 16th century, Quechua continued to be used widely by the indigenous peoples as the "common language." It was officially recognized by the Spanish administration, and many Spaniards learned it in order to communicate with local peoples. The clergy of the Catholic Church adopted Quechua to use as

8228-474: The Latin American nations achieved independence in the 19th century, the prestige of Quechua had decreased sharply. Gradually its use declined so that it was spoken mostly by indigenous people in the more isolated and conservative rural areas. Nevertheless, in the 21st century, Quechua language speakers number roughly 7 million people across South America, more than any other indigenous language family in

8349-482: The Peruvian Andes from wild or weed populations of the same species. There are non-cultivated quinoa plants ( Chenopodium quinoa var. melanospermum ) that grow in the area it is cultivated; these may either be related to wild predecessors, or they could be descendants of cultivated plants. Raw, uncooked quinoa is 13% water, 64% carbohydrates , 14% protein , and 6% fat . Nutritional evaluations indicate that

8470-424: The Spanish quinua or quinoa , itself derived from Quechua kinuwa . The Incas nicknamed quinoa chisiya mama , which in Quechua means "mother of all grains". Chenopodium quinoa is a dicotyledonous annual plant , usually about 1–2 m (3–7 ft) high. It has broad, generally powdery, hairy, lobed leaves, normally arranged alternately . The woody central stem is branched or unbranched depending on

8591-401: The aldohexose D-glucose, for example, has the formula (C·H 2 O) 6 , of which four of its six carbons atoms are stereogenic, making D-glucose one of 2 =16 possible stereoisomers . In the case of glyceraldehydes , an aldotriose, there is one pair of possible stereoisomers, which are enantiomers and epimers . 1, 3-dihydroxyacetone , the ketose corresponding to the aldose glyceraldehydes, is

8712-419: The amount of fat vs carbohydrate in the diet." In the long term, effective weight loss or maintenance depends on calorie restriction , not the ratio of macronutrients in a diet. The reasoning of diet advocates that carbohydrates cause undue fat accumulation by increasing blood insulin levels, and that low-carbohydrate diets have a "metabolic advantage", is not supported by clinical evidence . Further, it

8833-475: The area of distribution, but also in regards to the climate this plant was originally adapted to, in contrast to the climates on which it is able to successfully grow in now. In a process started by a number of pre-Inca South American indigenous cultures, people in Chile have been adapting quinoa to salinity and other forms of stress over the last 3,000   years. Quinoa is also cultivated, since an early date, near

8954-433: The carbonyl group is an aldehyde , the monosaccharide is an aldose ; if the carbonyl group is a ketone , the monosaccharide is a ketose . Monosaccharides with three carbon atoms are called trioses , those with four are called tetroses , five are called pentoses , six are hexoses , and so on. These two systems of classification are often combined. For example, glucose is an aldohexose (a six-carbon aldehyde), ribose

9075-622: The central Andes long before the expansion of the Inca Empire . The Inca were one among many peoples in present-day Peru who already spoke a form of Quechua, which in the Cuzco region particularly has been heavily influenced by Aymara , hence some of the characteristics that still distinguish the Cuzco form of Quechua today. Diverse Quechua regional dialects and languages had already developed in different areas, influenced by local languages, before

9196-564: The coast of northern Chile , where it was grown by the Chinchorro culture . Ch. quinoa was brought to the lowlands of south-central Chile at an early date from the Andean highlands. Varieties in the lowlands of south-central Chile derive directly from ancestral cultivars which then evolved in parallel to those of the highlands. It has been suggested that the introduction of Ch. quinoa occurred before highland varieties with floury perisperm emerged. There are wide discrepancies in

9317-561: The country. The major obstacle to the usage and teaching of Quechua languages is the lack of written materials, such as books, newspapers, software, and magazines. The Bible has been translated into Quechua and is distributed by certain missionary groups. Quechua, along with Aymara and minor indigenous languages, remains essentially a spoken language . In recent years, Quechua has been introduced in intercultural bilingual education (IBE) in Peru , Bolivia , and Ecuador . Even in these areas,

9438-460: The dialects is the basic criterion that defines Quechua not as a single language, but as a language family. The complex and progressive nature of how speech varies across the dialect continua makes it nearly impossible to differentiate discrete varieties; Ethnologue lists 45 varieties which are then divided into two groups; Central and Peripheral. Due to the non-intelligibility between the two groups, they are all classified as separate languages. As

9559-401: The diet halitosis , headache and constipation . Carbohydrate-restricted diets can be as effective as low-fat diets in helping achieve weight loss over the short term when overall calorie intake is reduced. An Endocrine Society scientific statement said that "when calorie intake is held constant [...] body-fat accumulation does not appear to be affected by even very pronounced changes in

9680-620: The drawbacks of quinoa, meat production in most cases is still less sustainable than quinoa. Quinoa is an important food for the Indigenous people of the Andean Altiplano , especially the Aymara and Quechua communities. Historically, it was consumed as a subsistence food, which was devalued by the Spanish when they colonized the region. For the Indigenous communities, growing quinoa represented food security and well-being, and it

9801-626: The early 1940s; as of 2015 the crop is mostly grown in three areas by only some 300 smallholder farmers. Each of these areas is different: indigenous small-scale growers near the border with Bolivia who grow many types of Bolivian forms, a few farmers in the central region who exclusively grow a white-seeded variety and generally market their crops through a well-known cooperative, and in the south by women in home gardens in Mapuche reserves. When Amaranthaceae became abundant in Lake Pacucha , Peru,

9922-413: The early 21st century, it became a fad diet as a means of weight loss, but with risks of undesirable side effects , such as low energy levels and increased hunger, insomnia , nausea, and gastrointestinal discomfort. The British Dietetic Association named it one of the "top 5 worst celeb diets to avoid in 2018". Most dietary carbohydrates contain glucose, either as their only building block (as in

10043-539: The extreme variability of the maturity period of most quinoa cultivars complicates mechanization. Harvest needs to be precisely timed to avoid high seed losses from shattering, and different panicles on the same plant mature at different times. The crop yield in the Andean region (often around 3 t/ha up to 5 t/ha) is comparable to wheat yields. In the United States, varieties have been selected for uniformity of maturity and are mechanically harvested using conventional small grain combines. The plants are allowed to stand until

10164-816: The governments are reaching only a part of the Quechua-speaking populations. Some indigenous people in each of the countries are having their children study in Spanish for social advancement. Radio Nacional del Perú broadcasts news and agrarian programs in Quechua for periods in the mornings. Quechua and Spanish are now heavily intermixed in much of the Andean region, with many hundreds of Spanish loanwords in Quechua. Similarly, Quechua phrases and words are commonly used by Spanish speakers. In southern rural Bolivia, for instance, many Quechua words such as wawa (infant), misi (cat), waska (strap or thrashing), are as commonly used as their Spanish counterparts, even in entirely Spanish-speaking areas. Quechua has also had

10285-487: The lake was fresh, and the lack of Amaranthaceae taxa strongly indicates droughts which turned the lake into a saltmarsh . Based on the pollen associated with soil manipulation, this is an area of the Andes where domestication of C.   quinoa became popular, although it was not the only one. It was domesticated in various geographical zones. With this, morphological adaptations began to happen until having five ecotypes today. Quinoa's genetic diversity illustrates that it

10406-648: The language of evangelization . The oldest written records of the language are by missionary Domingo de Santo Tomás , who arrived in Peru in 1538 and learned the language from 1540. He published his Grammatica o arte de la lengua general de los indios de los reynos del Perú (Grammar or Art of the General Language of the Indians of the Kingdoms of Peru) in 1560. Given its use by the Catholic missionaries,

10527-439: The language, and governments are training interpreters in Quechua to serve in healthcare, justice, and bureaucratic facilities. In 1975, Peru became the first country to recognize Quechua as one of its official languages. Ecuador conferred official status on the language in its 2006 constitution, and in 2009, Bolivia adopted a new constitution that recognized Quechua and several other indigenous languages as official languages of

10648-409: The lowest carbohydrate levels, although milk does contain a high proportion of lactose . Organisms typically cannot metabolize all types of carbohydrate to yield energy. Glucose is a nearly universal and accessible source of energy. Many organisms also have the ability to metabolize other monosaccharides and disaccharides but glucose is often metabolized first. In Escherichia coli , for example,

10769-476: The main organic reactions that involve carbohydrates are: Carbohydrate synthesis is a sub-field of organic chemistry concerned specifically with the generation of natural and unnatural carbohydrate structures. This can include the synthesis of monosaccharide residues or structures containing more than one monosaccharide, known as oligosaccharides . Selective formation of glycosidic linkages and selective reactions of hydroxyl groups are very important, and

10890-536: The market to economically privileged people in North America, possibly increasing the price of quinoa. Quinoa is used in the Jewish community as a substitute for the leavened grains that are forbidden during the Passover holiday. Several kosher certification organizations refuse to certify it as being kosher for Passover, citing reasons including its resemblance to prohibited grains or fear of cross-contamination of

11011-459: The most important in nature as it is the product of photosynthesis in plants) and in biosynthesis . When monosaccharides are not immediately needed, they are often converted to more space-efficient (i.e., less water-soluble) forms, often polysaccharides . In many animals, including humans, this storage form is glycogen , especially in liver and muscle cells. In plants, starch is used for the same purpose. The most abundant carbohydrate, cellulose ,

11132-451: The most. Quechua-Aymara and mixed Quechua-Aymara- Mapudungu toponymy can be found as far south as Osorno Province in Chile (latitude 41° S). In 2017 the first thesis defense done in Quechua in Europe was done by Peruvian Carmen Escalante Gutiérrez at Pablo de Olavide University ( Sevilla ). The same year Pablo Landeo wrote the first novel in Quechua without a Spanish translation. A Peruvian student, Roxana Quispe Collantes of

11253-498: The natural environment, threatening both the sustainability of producer agriculture and the biodiversity of quinoa. Studies have found that smallholder traditional farming of quinoa, specifically in the Andean region of Peru has significantly less of an environmental impact in carbon produced, than the modern industrial quinoa production. World demand for quinoa is sometimes presented in the media particularly as being caused by rising veganism , but one academic has commented that despite

11374-430: The number of different subspecies, varieties and landraces (domesticated plants or animals adapted to the environment in which they originated). However, it is generally undemanding and altitude-hardy; it is grown from coastal regions to over 4,000 m (13,000 ft) in the Andes near the equator, with most of the cultivars being grown between 2,500 m (8,200 ft) and 4,000 m (13,000 ft). Depending on

11495-547: The oxidation of one gram of lipids yields about 38 kJ (9 kcal). The human body stores between 300 and 500 g of carbohydrates depending on body weight, with the skeletal muscle contributing to a large portion of the storage. Energy obtained from metabolism (e.g., oxidation of glucose) is usually stored temporarily within cells in the form of ATP . Organisms capable of anaerobic and aerobic respiration metabolize glucose and oxygen (aerobic) to release energy, with carbon dioxide and water as byproducts. Catabolism

11616-472: The plant requires minimal protection. The genetic control of bitterness involves quantitative inheritance . Although lowering the saponin content through selective breeding to produce sweeter, more palatable varieties is complicated by ≈10% cross-pollination , it is a major goal of quinoa breeding programs , which may include genetic engineering . The toxicity category rating of the saponins in quinoa treats them as mild eye and respiratory irritants and as

11737-650: The polysaccharides starch and glycogen), or together with another monosaccharide (as in the hetero-polysaccharides sucrose and lactose). Unbound glucose is one of the main ingredients of honey. Glucose is extremely abundant and has been isolated from a variety of natural sources across the world, including male cones of the coniferous tree Wollemia nobilis in Rome, the roots of Ilex asprella plants in China, and straws from rice in California. ^A The carbohydrate value

11858-439: The position of the hydroxyl group (red or green) on the anomeric carbon relative to the CH 2 OH group bound to carbon 5: they either have identical absolute configurations (R,R or S,S) (α), or opposite absolute configurations (R,S or S,R) (β). Monosaccharides are classified according to three different characteristics: the placement of its carbonyl group, the number of carbon atoms it contains, and its chiral handedness. If

11979-523: The product from nearby fields of prohibited grain or during packaging. However, in December 2013 the Orthodox Union , the world's largest kosher certification agency , announced it would begin certifying quinoa as kosher for Passover. Quinoa is an allotetraploid plant, containing two full sets of chromosomes from two different species which hybridised with each other at one time. According to

12100-405: The proximal end of the glomeruli and the perfect ones at the distal end of it. A perfect flower has five sepals, five anthers and a superior ovary, from which two to three stigmatic branches emerge. The green hypogynous flowers have a simple perianth and are generally self-fertilizing , though cross-pollination occurs. In the natural environment, betalains serve to attract animals to generate

12221-492: The range of Quechua continued to expand in some areas. In the late 18th century, colonial officials ended the administrative and religious use of Quechua. They banned it from public use in Peru after the Túpac Amaru II rebellion of indigenous peoples. The Crown banned "loyal" pro-Catholic texts in Quechua, such as Garcilaso de la Vega's Comentarios Reales . Despite a brief revival of the language immediately after

12342-406: The simple vs. complex chemical distinction has little value for determining the nutritional quality of carbohydrates. Some simple carbohydrates (e.g., fructose ) raise blood glucose rapidly, while some complex carbohydrates (starches), raise blood sugar slowly. The speed of digestion is determined by a variety of factors including which other nutrients are consumed with the carbohydrate, how the food

12463-533: The simplest carbohydrates in that they cannot be hydrolyzed to smaller carbohydrates. They are aldehydes or ketones with two or more hydroxyl groups. The general chemical formula of an unmodified monosaccharide is (C•H 2 O) n , literally a "carbon hydrate". Monosaccharides are important fuel molecules as well as building blocks for nucleic acids. The smallest monosaccharides, for which n=3, are dihydroxyacetone and D- and L-glyceraldehydes. [REDACTED] [REDACTED] The α and β anomers of glucose. Note

12584-438: The species. They provide osmotic adjustment, in addition to protection against oxidative stress of the photosynthetic structures in developing leaves. Studies also suggested that reduction in stomatal density in reaction to salinity levels represents an essential instrument of defence to optimize water use efficiency under the given conditions to which it may be exposed. Chenopodium quinoa is believed to have been domesticated in

12705-437: The stalks and seeds have dried out and the grain has reached a moisture content below 10%. Handling involves threshing the seedheads from the chaff and winnowing the seed to remove the husk . Before storage, the seeds need to be dried in order to avoid germination . This was traditionally done manually, which is labour-intensive. In 2020, world production of quinoa was 175,188 tonnes , led by Peru and Bolivia with 97% of

12826-401: The straight-chain form. During the conversion from straight-chain form to the cyclic form, the carbon atom containing the carbonyl oxygen, called the anomeric carbon , becomes a stereogenic center with two possible configurations: The oxygen atom may take a position either above or below the plane of the ring. The resulting possible pair of stereoisomers is called anomers . In the α anomer ,

12947-546: The strict sense, " sugar " is applied for sweet, soluble carbohydrates, many of which are used in human food. The history of the discovery regarding carbohydrates dates back around 10,000 years ago in Papua New Guinea during the cultivation of sugarcane during the Neolithic agricultural revolution. The term "carbohydrate" was first proposed by German chemist Carl Schmidt (chemist) in 1844. In 1856, glycogen ,

13068-467: The suggested dates of introduction, one study suggests c. 1000 BC as the introduction date while another suggests 600–1100 AD. In colonial times the plant is known to have been cultivated as far south as the Chiloé Archipelago and the shores of Nahuel Huapi Lake . The cuisine of Chiloé included bread made of Quinoa until at least the mid-19th century. In Chile it had almost disappeared by

13189-438: The term "carbohydrate" (or "carbohydrate by difference") is used for everything other than water, protein, fat, ash, and ethanol. This includes chemical compounds such as acetic or lactic acid , which are not normally considered carbohydrates. It also includes dietary fiber which is a carbohydrate but which does not contribute food energy in humans, even though it is often included in the calculation of total food energy. In

13310-509: The term "carbohydrate" often means any food that is particularly rich in the complex carbohydrate starch (such as cereals, bread and pasta) or simple carbohydrates, such as sugar (found in candy, jams , and desserts). This informality is sometimes confusing since it confounds chemical structure and digestibility in humans. Often in lists of nutritional information , such as the USDA National Nutrient Database ,

13431-456: The term complex carbohydrate to refer to any sort of digestible saccharide present in a whole food, where fiber, vitamins and minerals are also found (as opposed to processed carbohydrates, which provide energy but few other nutrients). The standard usage, however, is to classify carbohydrates chemically: simple if they are sugars ( monosaccharides and disaccharides ) and complex if they are polysaccharides (or oligosaccharides ). In any case,

13552-714: The term is generally understood in the biochemistry sense, which excludes compounds with only one or two carbons and includes many biological carbohydrates which deviate from this formula. For example, while the above representative formulas would seem to capture the commonly known carbohydrates, ubiquitous and abundant carbohydrates often deviate from this. For example, carbohydrates often display chemical groups such as: N -acetyl (e.g., chitin ), sulfate (e.g., glycosaminoglycans ), carboxylic acid and deoxy modifications (e.g., fucose and sialic acid ). Natural saccharides are generally built of simple carbohydrates called monosaccharides with general formula (CH 2 O) n where n

13673-454: The total when combined (table). Since the early 21st century when quinoa became more commonly consumed in North America, Europe, and Australasia where it was not typically grown, the crop value increased. Between 2006 and 2013, quinoa crop prices tripled. In 2011, the average price was US$ 3,115 per tonne with some varieties selling as high as $ 8,000 per tonne. This compares with wheat prices of about US$ 340 per tonne, making wheat about 10% of

13794-493: The value of quinoa. The resulting effect on traditional production regions in Peru and Bolivia also influenced new commercial quinoa production elsewhere in the world, such as the United States. By 2013, quinoa was being cultivated in some 70 countries. As a result of expanding production outside the Andean highlands native for quinoa, the price plummeted starting in early 2015 and remained low for years. From 2018 to 2019, quinoa production in Peru declined by 22%. Some refer to this as

13915-475: The variety and may be green, red or purple. The flowering panicles arise from the top of the plant or from leaf axils along the stem. Each panicle has a central axis from which a secondary axis emerges either with flowers (amaranthiform) or bearing a tertiary axis carrying the flowers (glomeruliform). These are small, incomplete, sessile flowers of the same colour as the sepals, and both pistillate and perfect forms occur. Pistillate flowers are generally located at

14036-410: The variety, optimal growing conditions are in cool climates with temperatures that vary between −4 °C (25 °F) during the night to near 35 °C (95 °F) during the day. Some cultivars can withstand lower temperatures without damage. Light frosts normally do not affect the plants at any stage of development, except during flowering. Midsummer frosts during flowering, a frequent occurrence in

14157-457: Was and is a vital crop. Andean agronomists and nutrition scientists began researching quinoa in the early twentieth century, and it became the subject of much interest among researchers involved in neglected and underutilized crop studies in the 1970s. In 2004, the international community became increasingly interested in quinoa and it entered a boom and bust economic cycle that would last for over ten years. Between 2004 and 2011, quinoa became

14278-489: Was first used in the U.S. Senate Select Committee on Nutrition and Human Needs publication Dietary Goals for the United States (1977) where it was intended to distinguish sugars from other carbohydrates (which were perceived to be nutritionally superior). However, the report put "fruit, vegetables and whole-grains" in the complex carbohydrate column, despite the fact that these may contain sugars as well as polysaccharides. This confusion persists as today some nutritionists use

14399-643: Was introduced in 1983. In this high-altitude desert valley, maximum summer temperatures rarely exceed 30 °C (86 °F) and night temperatures are about 7 °C (45 °F). In the 2010s, experimental production was attempted in the Palouse region of Eastern Washington, and farmers in Western Washington began producing the crop. The Washington State University Skagit River Valley research facility near Mount Vernon grew thousands of its own experimental varieties. The Puget Sound region's climate

14520-755: Was involved in almost every meal of the day. The United Nations General Assembly declared 2013 as the " International Year of Quinoa ", in recognition of the ancestral practices of the Andean people, who have preserved it as a food for present and future generations, through knowledge and practices of living in harmony with nature. The objective was to draw the world's attention to the role that quinoa could play in providing food security , nutrition and poverty eradication in support of achieving Millennium Development Goals . Some academic commentary emphasized that quinoa production could have ecological and social drawbacks in its native regions, and that these problems needed to be tackled. The increasing demand for quinoa

14641-585: Was maintained as the prestige dialect in the north. Speakers from different points within any of the three regions can generally understand one another reasonably well. There are nonetheless significant local-level differences across each. ( Wanka Quechua , in particular, has several very distinctive characteristics that make the variety more challenging to understand, even for other Central Quechua speakers.) Speakers from different major regions, particularly Central or Southern Quechua, are not able to communicate effectively. The lack of mutual intelligibility among

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