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Chaff ( / tʃ æ f / ; also UK : / tʃ ɑː f / ) is dry, scale-like plant material such as the protective seed casings of cereal grains , the scale-like parts of flowers, or finely chopped straw . Chaff cannot be digested by humans, but it may be fed to livestock , ploughed into soil, or burned.

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22-674: [REDACTED] Look up shuck in Wiktionary, the free dictionary. Shuck may refer to: The chaff sections of grains Black Shuck , mythical dog Shuckin' and jivin' "Shuck", a song by Purity Ring from their debut album, Shrines (2012) People [ edit ] Glenn Shuck , American academic Henrietta Hall Shuck , American missionary J. B. Shuck , baseball player Jim Shuck , American football player Ryan Shuck , guitarist William E. Shuck, Jr. , Medal of Honor recipient See also [ edit ] Schuck ,

44-510: A dry husk (or hull) around the grain. Once it is removed, it is often referred to as chaff. In wild cereals and in the primitive domesticated einkorn , emmer and spelt wheats, the husks enclose each seed tightly. Before the grain can be used, the husks must be removed. The process of loosening the chaff from the grain so as to remove it is called " threshing " before " drying " – traditionally done by milling or pounding, making it finer like " flour ". Separating remaining loose chaff from

66-525: A surname Shuckle (disambiguation) Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title Shuck . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Shuck&oldid=1207024391 " Categories : Disambiguation pages Disambiguation pages with surname-holder lists Hidden categories: Short description

88-470: A total of 42. Durum wheat originated through intergeneric hybridization and polyploidization involving two diploid (having two sets of chromosomes) grass species: T. urartu (2n=2x=14, AA genome) and a B-genome diploid related to Aegilops speltoides (2n=2x=14, SS genome) and is thus an allotetraploid (having four sets of chromosomes, from unlike parents) species. Durum—and indeed all tetraploids —lack Fhb1 alleles . The only exception

110-522: A yellow endosperm , which gives pasta its color. When durum is milled , the endosperm is ground into a granular product called semolina . Semolina made from durum is used for premium pastas and breads . Notably semolina is also one of the only flours that is purposely oxidized for flavor and color. There is also a red durum, used mostly for livestock feed . The cultivation of durum generates greater yield than other wheats in areas of low precipitation. Good yields can be obtained by irrigation , but this

132-428: Is a finer, scaly material that is part of the grain itself. Chaff is also made by chopping straw (or sometimes coarse hay ) into very short lengths, using a machine called a chaff cutter . Like grain chaff, it is used as animal feed and is a way of making coarse fodder more palatable for livestock. Coffee chaff is produced from the so called silverskin , the thin inner-parchment layer on dried coffee beans, in

154-425: Is cleaned to remove foreign material and shrunken and broken kernels. Then it is tempered to a moisture content, toughening the seed coat for efficient separation of bran and endosperm. Durum milling is a complex procedure involving repetitive grinding and sieving . Proper purifying results in maximum semolina yield and the least amount of bran powder . To produce bread, durum wheat is ground into flour. The flour

176-436: Is different from Wikidata All article disambiguation pages All disambiguation pages Chaff "Chaff" comes from Middle English chaf , from Old English ceaf , related to Old High German cheva , "husk". In grasses (including cereals such as rice , barley , oats , and wheat ), the ripe seed is surrounded by thin, dry, scaly bracts (called glumes , lemmas , and paleas ), forming

198-457: Is found by Buerstmayr et al. , 2012 on the 3B chromosome . One of the predominant production areas of durum—Italy—has domesticated varieties with lower genetic diversity than wild types, but ssp. turanicum , ssp. polonicum and ssp. carthlicum have a level of diversity intermediate between those groups. There is evidence of an increase in the intensity of breeding after 1990. Commercially produced dry pasta , or pasta secca ,

220-511: Is made almost exclusively from durum semolina . Most home-made fresh pastas also use durum wheat or a combination of soft and hard wheats. Husked but unground, or coarsely ground, it is used to produce the semolina in the couscous of North Africa and the Levant . It is also used for Levantine dishes such as tabbouleh , kashk , kibbeh , bitfun and the bulgur for pilafs . In North African cuisine and Levantine cuisine , it forms

242-649: Is mixed with water to produce dough. The quantities mixed vary, depending on the acidity of the mixture. To produce fluffy bread, the dough is mixed with yeast and lukewarm water, heavily kneaded to form a gas-retaining gluten network, and then fermented for hours, producing CO 2 bubbles. The quality of the bread produced depends on the viscoelastic properties of gluten, the protein content and protein composition. Containing about 12% total protein in defatted flour compared to 11% in common wheat, durum wheat yields 27% extractable, wet gluten compared to 24% in common wheat. Because durum wheat contains gluten , it

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264-555: Is rarely done. In the first half of the 20th century, the crop was widely grown in Russia . Durum is one of the most important food crops in West Asia . Although the variety of the wheat there is diverse, it is not extensively grown there, and thus must be imported. West amber durum produced in Canada is used mostly as semolina/pasta, but some is also exported to Italy for bread production. In

286-495: The Bible , such use is found in Job 13:25, Isaiah 33:11, Psalm 83:13-15, and other places. Chaff also lends its name to a radar countermeasure , composed of small particles dropped from an aircraft. Hungarian engineer László Schremmer has discovered that the use of chaff-based filters can reduce the arsenic content of water to 3 microgram/litre. This is especially important in areas where

308-573: The Middle East and North Africa, local bread-making accounts for half the consumption of durum. Some flour is even imported. On the other hand, many countries in Europe produce durum in commercially significant quantities. In India durum accounts for roughly 5% of total wheat production in the country, and is used to make products such as rava and sooji. Durum wheat is subject to four processes: cleaning, tempering, milling and purifying. First, durum wheat

330-506: The basis of many soups , gruels, stuffings, puddings and pastries . When ground as fine as flour, it is used for making bread . In the Middle East , it is used for flat round breads , and in Europe and elsewhere, it can be used for pizza or torte . The use of wheat to produce pasta was described as early as the 10th century by Ibn Wahshīya of Cairo . The North Africans called the product itrīya , from which Italian sources derived

352-461: The formation of a gluten network. Durum contains 27% extractable wet gluten, about 3% higher than common wheat ( T. aestivum L.). Some authorities synonymize "durum" and Triticum turgidum . Some reserve "durum" for Triticum turgidum subsp. durum . Durum wheat is a tetraploid wheat, having four sets of chromosomes for a total of 28, unlike hard red winter and hard red spring wheats , which are hexaploid (six sets of chromosomes) for

374-516: The grain is called " winnowing " – traditionally done by repeatedly tossing the grain up into a light wind, which gradually blows the lighter chaff away. This method typically uses a broad, plate-shaped basket or similar receptacle to hold and collect the winnowed grain as it falls back down. Domesticated grains such as durum and common wheat have been bred to have chaff that is easily removed. These varieties are known as "free-threshing" or "naked". Chaff should not be confused with bran , which

396-451: The potable water is provided by filtering the water extracted from an underground aquifer . Durum wheat Durum wheat ( / ˈ dj ʊər ə m / ), also called pasta wheat or macaroni wheat ( Triticum durum or Triticum turgidum subsp. durum ), is a tetraploid species of wheat . It is the second most cultivated species of wheat after common wheat , although it represents only 5% to 8% of global wheat production. It

418-402: The process of grinding coffee beans. In botany , chaff refers to the thin receptacular bracts of many species in the sunflower family Asteraceae and related families. They are modified scale-like leaves surrounding single florets in the flower-head. Chaff as a waste product from grain processing leads to a metaphorical use of the term, to refer to something seen as worthless. In

440-425: The resistance of the grain to milling, in particular of the starchy endosperm , causing dough made from its flour to be weak or "soft". This makes durum favorable for semolina and pasta and less practical for flour, which requires more work than with hexaploid wheats such as common bread wheats . Despite its high protein content, durum is not a strong wheat in the sense of giving strength to dough through

462-421: The term tria (or aletría in the case of Spanish sources) during the 15th century. Durum wheat ( Triticum turgidum ssp. durum ) is the 10th most cultivated cereal worldwide, with a total production of about 38 million tons. Most of the durum grown today is amber durum , the grains of which are amber-colored due to the extra carotenoid pigments and are larger than those of other types of wheat. Durum has

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484-561: Was developed by artificial selection of the domesticated emmer wheat strains formerly grown in Central Europe and the Near East around 7000 BC, which developed a naked, free-threshing form. Like emmer, durum wheat is awned (with bristles). It is the predominant wheat that grows in the Middle East. Durum in Latin means 'hard', and the species is the hardest of all wheats. This refers to

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