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Sugar is the generic name for , soluble , many of which are used in . Table sugar, granulated sugar, or regular sugar, refers to , a composed of glucose and fructose.

Simple sugars, also called , include , , and . Compound sugars, also called or double sugars, are molecules composed of two monosaccharides joined by a . Common examples are (glucose + fructose), (glucose + galactose), and (two molecules of glucose). In the body, compound sugars are into simple sugars.

Longer chains of monosaccharides are not regarded as sugars, and are called or . is a glucose polymer found in plants, and is the most abundant source of energy in human food. Some other chemical substances, such as and , may have a sweet taste, but are not classified as sugar.

Sugars are found in the tissues of most plants. and are abundant natural sources of unbounded simple sugars. Sucrose is especially concentrated in and , making them ideal for efficient commercial to make refined sugar. In 2016, the combined world production of those two crops was about two billion . Maltose may be produced by grain. Lactose is the only sugar that cannot be extracted from plants. It can only be found in , including human breast milk, and in some . A cheap source of sugar is , industrially produced by converting corn into sugars, such as maltose, fructose and glucose.

Sucrose is used in prepared foods (e.g. cookies and cakes), is sometimes to commercially available and beverages, and may be used by people as a sweetener for foods (e.g. toast and cereal) and beverages (e.g. coffee and tea). The average person consumes about of sugar each year, with and consuming up to and consuming under . As sugar consumption grew in the latter part of the 20th century, researchers began to examine whether a diet high in sugar, especially refined sugar, was damaging to . Excessive consumption of sugar has been implicated in the onset of , diabetes, cardiovascular disease, , and . Numerous studies have tried to clarify those implications, but with varying results, mainly because of the difficulty of finding populations for use as controls that consume little or no sugar. In 2015, the World Health Organization recommended that adults and children reduce their intake of to less than 10%, and encouraged a reduction to below 5%, of their total energy intake.


Etymology
The reflects the spread of the commodity. From ( śarkarā), meaning "ground or candied sugar", came shakar, then to 12th century sucre and the English sugar.

The English word , a coarse made from sap or juice, has a similar etymological origin: Portuguese jágara from the Malayalam cakkarā, which is from the Sanskrit śarkarā.


History

Ancient world to Renaissance

Asia
Sugar has been produced in the Indian subcontinent
(2002). 9780786709762, Basic Books. .
since ancient times and its cultivation spread from there into modern-day Afghanistan through the . It was not plentiful nor cheap in early times, and in most parts of the world, was more often used for sweetening. Originally, people chewed raw sugarcane to extract its sweetness. Sugarcane was a native of tropical Indian subcontinent (South Asia) and Southeast Asia.

Different species seem to have originated from different locations with Saccharum barberi originating in and and S. officinarum coming from . One of the earliest historical references to sugarcane is in Chinese manuscripts dating to 8th century BCE, which state that the use of sugarcane originated in India.

In the tradition of Indian medicine (), the sugarcane is known by the name Ikṣu and the sugarcane juice is known as Phāṇita. Its varieties, synonyms and characteristics are defined in such as the Bhāvaprakāśa (1.6.23, group of sugarcanes).

(2021). 9788121800006, Chowkhamba Krishnadas Academy, Varanasi.
Sugar remained relatively unimportant until the Indians discovered methods of turning into granulated crystals that were easier to store and to transport.Adas, Michael (January 2001). Agricultural and Pastoral Societies in Ancient and Classical History. Temple University Press. . p. 311. Crystallized sugar was discovered by the time of the , around the 5th century CE. In the local Indian language, these crystals were called khanda (: खण्ड, ), which is the source of the word candy. Indian sailors, who carried and sugar as supplies, introduced knowledge of sugar along the various they travelled. Traveling Buddhist monks took sugar crystallization methods to China.Kieschnick, John (2003). The Impact of Buddhism on Chinese Material Culture Princeton University Press. . During the reign of (r. 606–647) in , Indian envoys in taught methods of cultivating sugarcane after Emperor Taizong of Tang (r. 626–649) made known his interest in sugar. China established its first sugarcane plantations in the seventh century.Sen, Tansen. (2003). Buddhism, Diplomacy, and Trade: The Realignment of Sino-Indian Relations, 600–1400. Manoa: Asian Interactions and Comparisons, a joint publication of the University of Hawaii Press and the Association for Asian Studies. . pp. 38–40. Chinese documents confirm at least two missions to India, initiated in 647 CE, to obtain technology for sugar refining.Kieschnick, John (2003). The Impact of Buddhism on Chinese Material Culture Princeton University Press. 258. . In the Indian subcontinent, the Middle East and China, sugar became a staple of cooking and desserts.


Europe
, admiral of Alexander of Macedonia, knew of sugar during the year 325 BC, because of his participation in the campaign of India led by Alexander ( , Anabasis).Jean Meyer, Histoire du sucre, ed. Desjonquières, 1989Anabasis Alexandri, translated by E.J. Chinnock (1893) The Greek physician Pedanius Dioscorides in the 1st century CE described sugar in his medical treatise De Materia Medica,"There is a kind of coalesced honey called sakcharon i.e. found in reeds in India and similar in consistency to salt and brittle enough to be broken between the teeth like salt," Quoted from Book Two of Dioscorides' Materia Medica. The book is downloadable from links at the Wikipedia page. and Pliny the Elder, a 1st-century CE Roman, described sugar in his Natural History: "Sugar is made in Arabia as well, but Indian sugar is better. It is a kind of honey found in cane, white as gum, and it crunches between the teeth. It comes in lumps the size of a hazelnut. Sugar is used only for medical purposes."Faas, Patrick, (2003). Around the Roman Table: Food and Feasting in Ancient Rome. Chicago: University of Chicago Press. p. 149. brought sugar back to Europe after their campaigns in the , where they encountered caravans carrying "sweet salt". Early in the 12th century, Venice acquired some villages near Tyre and set up estates to produce sugar for export to Europe. It supplemented the use of honey, which had previously been the only available sweetener.
(2021). 9780701168346, Chatto & Windus.
Crusade chronicler William of Tyre, writing in the late 12th century, described sugar as "very necessary for the use and health of mankind".
(2021). 9780415174152, Routledge. .
In the 15th century, was the chief sugar refining and distribution center in Europe.

There was a drastic change in the mid-15th century, when São Tomé, , and the were settled from Europe, and sugar grown there.Strong, 195

(2021). 9780821445662, Ohio University. .
After this an "all-consuming passion for sugar ... swept through society" as it became far more easily available, though initially still very expensive.Strong, 194 By 1492, Madeira was producing over of sugar annually.Frankopan, 205 , one of the centers of distribution, became known for candied fruit, while Venice specialized in pastries, sweets (candies), and . Sugar was considered to have "valuable medicinal properties" as a "warm" food under prevailing categories, being "helpful to the stomach, to cure cold diseases, and sooth lung complaints".Strong, 194-195, 195 quoted

A feast given in in 1457 by Gaston de Foix, which is "probably the best and most complete account we have of a late medieval banquet" includes the first mention of sugar sculptures, as the final food brought in was "a heraldic menagerie sculpted in sugar: lions, stags, monkeys ... each holding in paw or beak the arms of the Hungarian king".Strong, 75 Other recorded grand feasts in the decades following included similar pieces.Strong, 133-134, 195-197 Originally the sculptures seem to have been eaten in the meal, but later they become merely table decorations, the most elaborate called . Several significant sculptors are known to have produced them; in some cases their preliminary drawings survive. Early ones were in brown sugar, partly in molds, with the final touches carved. They continued to be used until at least the Coronation Banquet for Edward VII of the United Kingdom in 1903; among other sculptures every guest was given a sugar crown to take away.Strong, 309


Modern history
In August 1492, Christopher Columbus collected sugar cane samples in in the , and introduced it to the New World. The cuttings were planted and the first sugar-cane harvest in took place in 1501. Many sugar mills had been constructed in Cuba and by the 1520s.
(1996). 9780822318651, Duke University Press. .
The Portuguese took sugar cane to . By 1540, there were 800 cane-sugar mills in Santa Catarina Island and another 2,000 on the north coast of Brazil, , and . It took until 1600 for Brazilian sugar production to exceed that of São Tomé, which was the main center of sugar production in sixteenth century.

Sugar was a luxury in Europe until the early 19th century, when it became more widely available, due to the rise of in Prussia, and later in France under . Beet sugar was a German invention, since, in 1747, Andreas Sigismund Marggraf announced the discovery of sugar in beets and devised a method using alcohol to extract it.Marggraf (1747) "Experiences chimiques faites dans le dessein de tirer un veritable sucre de diverses plantes, qui croissent dans nos contrées" Chemical, Histoire de l'académie royale des sciences et belles-lettres de Berlin, pages 79-90. Marggraf's student, Franz Karl Achard, devised an economical industrial method to extract the sugar in its pure form in the late 18th century.Achard (1799) "Procédé d'extraction du sucre de bette" (Process for extracting sugar from beets), Annales de Chimie, 32 : 163-168. Achard first produced beet sugar in 1783 in Kaulsdorf, and in 1801, the world's first beet sugar production facility was established in Cunern, (then part of Prussia). The works of Marggraf and Achard were the starting point for the sugar industry in Europe,

(2009). 9780600620426, Éditions Larousse.
and for the modern sugar industry in general, since sugar was no longer a luxury product and a product almost only produced in warmer climates.

Sugar became highly popular and by the 19th century, sugar came to be considered a necessity. This evolution of taste and demand for sugar as an essential food ingredient resulted in major economic and social changes.

(1986). 9780140092332, Penguin. .
Demand drove, in part, the colonization of tropical islands and areas where labor-intensive sugarcane plantations and sugar manufacturing could be successful. The demand for cheap labor to perform the labor-intensive cultivation and processing increased the European demand for enslaved Africans.

After slavery was , the demand for workers in European colonies in the Caribbean was filled by indentured laborers from Indian subcontinent.

(1993). 9780801877469
(1995). 9780521444057 .
Millions of enslaved or indentured laborers were brought to various European colonies in the Americas, Africa and Asia (as a result of demand in Europe for among other commodities, sugar), influencing the ethnic mixture of numerous nations around the globe.
(1994). 9780312121723, St Martin's Press.

Sugar also led to some industrialization of areas where sugar cane was grown. For example, in the 1790s Lieutenant J. Paterson, of the Bengal Presidency promoted to the British parliament the idea that sugar cane could grow in British India, where it had started, with many advantages and at less expense than in the West Indies. As a result, sugar factories were established in in eastern India. Early Sugar Industry of Bihar – Bihargatha . Bihargatha.in. Retrieved on 2012-01-07. Compare:

(2021). 9781107435308, Cambridge University Press. .
During the , sugar-beet production increased in continental Europe because of the difficulty of importing sugar when shipping was subject to . By 1880 the sugar beet was the main source of sugar in Europe. It was also cultivated in and other parts of England, although the United Kingdom continued to import the main part of its sugar from its colonies.

Until the late nineteenth century, sugar was purchased in , which had to be cut using implements called . In later years, granulated sugar was more usually sold in bags. Sugar cubes were produced in the nineteenth century. The first inventor of a process to produce sugar in cube form was Jakub Kryštof Rad, director of a sugar company in Dačice. He began sugar-cube production after being granted a five-year patent for the process on January 23, 1843. of Tate & Lyle was another early manufacturer of sugar cubes at his refineries in and . Tate purchased a patent for sugar-cube manufacture from German , who in 1872 had invented a different method of processing of sugar cubes.

(2021). 9780007448470, Collins. .

Sugar was rationed during World War I and more sharply during World War II. This led to the development and use of various artificial sweeteners.


Chemistry
Scientifically, sugar loosely refers to a number of carbohydrates, such as monosaccharides, disaccharides, or . Monosaccharides are also called "simple sugars", the most important being glucose. Most monosaccharides have a formula that conforms to with n between 3 and 7 ( being an exception). has the molecular formula . The names of typical sugars end with - ose, as in "" and "". Sometimes such words may also refer to any types of soluble in water. The acyclic mono- and disaccharides contain either groups or groups. These double bonds (C=O) are the reactive centers. All saccharides with more than one ring in their structure result from two or more monosaccharides joined by with the resultant loss of a molecule of water () per bond.
(1972). 9780125563529, Academic Press.

in a closed-chain form can form glycosidic bonds with other monosaccharides, creating disaccharides (such as sucrose) and polysaccharides (such as ). must hydrolyze or otherwise break these glycosidic bonds before such compounds become . After digestion and absorption the principal monosaccharides present in the blood and internal tissues include glucose, fructose, and galactose. Many and can form ring structures. In these closed-chain forms, the aldehyde or ketone group remains non-free, so many of the reactions typical of these groups cannot occur. Glucose in solution exists mostly in the ring form at equilibrium, with less than 0.1% of the molecules in the open-chain form.


Natural polymers
of sugars are common in nature. Through photosynthesis, plants produce glyceraldehyde-3-phosphate (G3P), a phosphated 3-carbon sugar that is used by the cell to make monosaccharides such as glucose () or (as in cane and beet) sucrose (). Monosaccharides may be further converted into structural polysaccharides such as and for construction or into energy reserves in the form of storage polysaccharides such as starch or . Starch, consisting of two different polymers of glucose, is a readily degradable form of chemical stored by cells, and can be converted to other types of energy. Another polymer of glucose is cellulose, which is a linear chain composed of several hundred or thousand glucose units. It is used by plants as a structural component in their cell walls. Humans can digest cellulose only to a very limited extent, though can do so with the help of bacteria in their gut. and are built up of the monosaccharides and , respectively. Deoxyribose has the formula and ribose the formula ..


Flammability and heat response
Because sugars burn easily when exposed to flame, the handling of sugars risks . The risk of explosion is higher when the sugar has been milled to superfine texture, such as for use in .
(2015). 9781782626091, Royal Society of Chemistry. .
The 2008 Georgia sugar refinery explosion, which killed 14 people and injured 40, and destroyed most of the refinery, was caused by the ignition of sugar dust.

In its culinary use, exposing sugar to heat causes . As the process occurs, volatile chemicals such as are released, producing the characteristic flavor.


Types

Monosaccharides
Fructose, galactose, and glucose are all simple sugars, , with the general formula C6H12O6. They have five hydroxyl groups (−OH) and a carbonyl group (C=O) and are cyclic when dissolved in water. They each exist as several with dextro- and laevo-rotatory forms that cause polarized light to diverge to the right or the left.
  • , or fruit sugar, occurs naturally in fruits, some root vegetables, cane sugar and honey and is the sweetest of the sugars. It is one of the components of sucrose or table sugar. It is used as a high-fructose syrup, which is manufactured from hydrolyzed corn starch that has been processed to yield , with enzymes then added to convert part of the glucose into fructose.
    (1991). 9780849388354, CRC Press, Inc.. .
  • generally does not occur in the free state but is a constituent with glucose of the disaccharide or milk sugar. It is less sweet than glucose. It is a component of the antigens found on the surface of red blood cells that determine blood groups.
    (1995). 9780697222138, WM C. Brown.
  • occurs naturally in fruits and plant juices and is the primary product of . Most ingested carbohydrates are converted into glucose during digestion and it is the form of sugar that is transported around the bodies of animals in the bloodstream. Glucose syrup is a liquid form of glucose that is widely used in the manufacture of foodstuffs. It can be manufactured from starch by enzymatic hydrolysis.
  • , sometimes called grape sugar because drying grape juice produces crystals of dextrose that can be from the other components, is a naturally occurring (form) of glucose. Corn sugar, which is produced commercially by breaking down , is one common source of purified dextrose. However, dextrose is naturally present in many unprocessed, , including and fruits such as .
    (2010). 9780191585029, OUP Oxford. .


Disaccharides
Lactose, maltose, and sucrose are all compound sugars, , with the general formula C12H22O11. They are formed by the combination of two monosaccharide molecules with the exclusion of a molecule of water.
  • is the naturally occurring sugar found in milk. A molecule of lactose is formed by the combination of a molecule of galactose with a molecule of glucose. It is broken down when consumed into its constituent parts by the enzyme during digestion. Children have this enzyme but some adults no longer form it and they are unable to digest lactose.
  • is formed during the germination of certain grains, the most notable being , which is converted into , the source of the sugar's name. A molecule of maltose is formed by the combination of two molecules of glucose. It is less sweet than glucose, fructose or sucrose. It is formed in the body during the digestion of starch by the enzyme and is itself broken down during digestion by the enzyme .
  • is found in the stems of sugarcane and roots of sugar beet. It also occurs naturally alongside fructose and glucose in other plants, in particular fruits and some roots such as carrots. The different proportions of sugars found in these foods determines the range of sweetness experienced when eating them. A molecule of sucrose is formed by the combination of a molecule of glucose with a molecule of fructose. After being eaten, sucrose is split into its constituent parts during digestion by a number of enzymes known as .


Sources
The sugar contents of common fruits and vegetables are presented in Table 1. The fructose to fructose plus glucose ratio is calculated by including the fructose and glucose coming from the sucrose.

In November 2019, scientists reported detecting, for the first time, sugar molecules, including , in , suggesting that chemical processes on can produce some fundamentally essential bio-ingredients important to , and supporting the notion of an prior to a DNA-based on Earth, and possibly, as well, the notion of .

+Table 1. Sugar content of selected common plant foods (g/100g) NAL USDA National Nutrient Database
20
64
20
2
1
51
57
8
61
16
10
96
77
15
0
14
60
tr
high
high
The carbohydrate figure is calculated in the USDA database and does not always correspond to the sum of the sugars, the starch, and the dietary fiber.


Production
Due to rising demand, sugar production in general increased some 14% over the period 2009 to 2018. The largest importers were China, , and the United States.


Sugarcane
768.7
348.4
122.7
87.5
1890.7
Source: ,
Global production of in 2016 was 1.9 billion tonnes, with Brazil producing 41% of the world total and India 18% (table).

Sugarcane refers to any of several species, or their hybrids, of giant grasses in the genus in the family . They have been cultivated in tropical climates in the Indian subcontinent and Southeast Asia over centuries for the sucrose found in their stems. A great expansion in sugarcane production took place in the 18th century with the establishment of in the Americas. The use of for the labor-intensive process resulted in sugar production, enabling prices cheap enough for most people to buy. Mechanization reduced some labor needs, but in the 21st century, cultivation and production relied on low-wage laborers.

Sugar cane requires a frost-free climate with sufficient rainfall during the growing season to make full use of the plant's substantial growth potential. The crop is harvested mechanically or by hand, chopped into lengths and conveyed rapidly to the (commonly known as a ) where it is either milled and the juice extracted with water or extracted by diffusion. The juice is clarified with lime and heated to destroy . The resulting thin syrup is concentrated in a series of evaporators, after which further water is removed. The resulting solution is seeded with sugar crystals, facilitating crystal formation and drying. is a by-product of the process and the fiber from the stems, known as , is burned to provide energy for the sugar extraction process. The crystals of raw sugar have a sticky brown coating and either can be used as they are, can be bleached by , or can be treated in a process to produce a whiter product. About of irrigation water is needed for every one kilogram (2.2 pounds) of sugar produced.


Sugar beet
51.4
33.8
33.5
25.5
19.5
277.2
Source: ,

In 2016, global production of was 277 million , led by Russia with 19% of the world total (table).

The sugar beet became a major source of sugar in the 19th century when methods for extracting the sugar became available. It is a , a of in the family , the tuberous root of which contains a high proportion of sucrose. It is cultivated as a root crop in temperate regions with adequate rainfall and requires a fertile soil. The crop is harvested mechanically in the autumn and the crown of leaves and excess soil removed. The roots do not deteriorate rapidly and may be left in the field for some weeks before being transported to the processing plant where the crop is washed and sliced, and the sugar extracted by diffusion. Milk of lime is added to the raw juice with . After water is evaporated by boiling the syrup under a vacuum, the syrup is cooled and seeded with sugar crystals. The that crystallizes can be separated in a centrifuge and dried, requiring no further refining.


Refining
Refined sugar is made from raw sugar that has undergone a process to remove the . Raw sugar is which is extracted from sugarcane or . While raw sugar can be consumed, the refining process removes unwanted tastes and results in refined sugar or .
(2021). 9789799931108, Sugar Observer.

The sugar may be transported in bulk to the country where it will be used and the refining process often takes place there. The first stage is known as affination and involves immersing the sugar crystals in a concentrated syrup that softens and removes the sticky brown coating without dissolving them. The crystals are then separated from the liquor and dissolved in water. The resulting syrup is treated either by a or by a phosphatation process. Both involve the precipitation of a fine solid in the syrup and when this is filtered out, many of the impurities are removed at the same time. Removal of color is achieved by using either a granular or an ion-exchange resin. The sugar syrup is concentrated by boiling and then cooled and seeded with sugar crystals, causing the sugar to crystallize out. The liquor is spun off in a centrifuge and the white crystals are dried in hot air and ready to be packaged or used. The surplus liquor is made into refiners' molasses.

The International Commission for Uniform Methods of Sugar Analysis sets standards for the measurement of the purity of refined sugar, known as ICUMSA numbers; lower numbers indicate a higher level of purity in the refined sugar.

Refined sugar is widely used for industrial needs for higher quality. Refined sugar is purer (ICUMSA below 300) than raw sugar (ICUMSA over 1,500).

(2021). 9789799931108, Sugar Observer.
The level of purity associated with the colors of sugar, expressed by standard number ICUMSA, the smaller ICUMSA numbers indicate the higher purity of sugar.


Forms and uses

Crystal size
  • Coarse-grain sugar, also known as sanding sugar, composed of reflective crystals with grain size of about 1 to 3 mm, similar to . Used atop baked products and candies, it will not dissolve when subjected to heat and moisture.
  • Granulated sugar (about 0.6 mm crystals), also known as table sugar or regular sugar, is used at the table, to sprinkle on foods and to sweeten hot drinks (coffee and tea), and in home baking to add sweetness and texture to baked products (cookies and cakes) and desserts (pudding and ice cream). It is also used as a preservative to prevent micro-organisms from growing and perishable food from spoiling, as in candied fruits, jams, and .
  • Milled sugars are ground to a fine powder. They are used for dusting foods and in baking and confectionery.
    • , sold as "superfine" sugar in the United States, with grain size of about 0.35 mm
    • , also known as confectioner's sugar or icing sugar, available in varying degrees of fineness (e.g., fine powdered or 3X, very fine or 6X, and ultra-fine or 10X). The ultra-fine variety (sometimes called 10X) has grain size of about 0.060 mm, that is about ten times smaller than granulated sugar.
    • , a non-melting form of powdered sugar usually consisting of glucose, rather than sucrose.
  • Screened sugars are crystalline products separated according to the size of the grains. They are used for decorative table sugars, for blending in dry mixes and in baking and confectionery.


Shapes
  • Sugar cubes() (sometimes called sugar lumps) are white or brown granulated sugars lightly steamed and pressed together in block shape. They are used to sweeten drinks.
  • was the usual -form in which refined sugar was produced and sold until the late 19th century. This shape is still in use in Germany (for preparation of ) as well as and .


Brown sugars
are granulated sugars, either containing residual molasses, or with the grains deliberately coated with molasses to produce a light- or dark-colored sugar. They are used in baked goods, confectionery, and . Their darkness is due to the amount of molasses they contain. They may be classified based on their darkness or country of origin. For instance:
  • Light brown, with little content of molasses (about 3.5%)
  • Dark brown, with higher content of molasses (about 6.5%)
  • Non-centrifugal cane sugar, unrefined and hence very dark cane sugar obtained by evaporating water from sugarcane juice, such as:
    • , also known as rapadura, chancaca, piloncillo.
    • Some varieties of , also known as Barbados sugar. Other varieties are partially refined by centrifugation or by using a .
    • Some varieties of . Other varieties are produced from or from , rather than sugarcane juice.


Liquid sugars
  • , mainly containing unbound molecules of fructose and glucose, is a viscous liquid produced by bees by digesting floral .
  • are thick, viscous liquids consisting primarily of a solution of sugar in water. They are used in the food processing of a wide range of products including beverages, , , and .
    • Syrups made by dissolving granulated sugar in water are sometimes referred to as liquid sugar. A liquid sugar containing 50% sugar and 50% water is called simple syrup.
    • Syrups can also be made by reducing naturally sweet juices such as juice, or sap.
    • is made by converting to sugars (mainly maltose and glucose).
    • High-fructose corn syrup (HFCS), is produced by further processing corn syrup to convert some of its glucose into fructose.
    • Inverted sugar syrup, commonly known as invert syrup or invert sugar, is a mixture of two simple sugars—glucose and fructose—that is made by heating granulated sugar in water. It is used in breads, cakes, and beverages for adjusting sweetness, aiding moisture retention and avoiding crystallization of sugars.
  • and are obtained by removing sugar from sugarcane or sugar beet juice, as a byproduct of sugar production. They may be blended with the above-mentioned syrups to enhance sweetness and used in a range of baked goods and confectionery including toffees and .
    • Blackstrap molasses, also known as black treacle, has dark color, relatively small sugar content and strong flavour. It is sometimes added to animal feed, or processed to produce , or for fuel.
    • Regular molasses and treacle have higher sugar content and lighter color, relative to blackstrap.
  • In , fruit sugars are converted into alcohol by a fermentation process. If the formed by pressing the fruit has a low sugar content, additional sugar may be added to raise the alcohol content of the wine in a process called . In the production of sweet wines, fermentation may be halted before it has run its full course, leaving behind some residual sugar that gives the wine its sweet taste.
    (2021). 9780198609902, Oxford University Press. .


Other sweeteners
  • Low-calorie sweeteners are often made of with added sweeteners. Maltodextrin is an easily digestible synthetic consisting of short chains of three or more glucose molecules and is made by the partial of starch. Strictly, maltodextrin is not classified as sugar as it contains more than two glucose molecules, although its structure is similar to , a molecule composed of two joined glucose molecules.
  • are and are used in chewing gums where a sweet flavor is required that lasts for a prolonged time in the mouth.
  • Several different kinds of zero-calorie artificial sweeteners may be also used as sugar substitutes.


Consumption
In most parts of the world, sugar is an important part of the human diet, making food more palatable and providing . After cereals and vegetable oils, sugar derived from sugarcane and beet provided more kilocalories per capita per day on average than other food groups. According to one source, consumption of sugar in 2016 was highest in the United States, followed by Germany and the Netherlands.


Nutrition and flavor
Brown and white granulated sugar are 97% to nearly 100% , respectively, with less than 2% water, and no dietary fiber, protein or fat (table). Brown sugar contains a moderate amount of iron (15% of the Reference Daily Intake in a 100 gram amount, see table), but a typical serving of 4 grams (one teaspoon), would provide 15 and a negligible amount of iron or any other nutrient. Because brown sugar contains 5–10% reintroduced during processing, its value to some consumers is a richer flavor than white sugar.


Health effects

Sugar industry funding and health information
Sugar refiners and manufacturers of sugary foods and drinks have sought to influence medical research and recommendations, with substantial and largely clandestine spending documented from the 1960s to 2016. The results of research on the health effects of sugary food and drink differ significantly, depending on whether the researcher has financial ties to the food and drink industry. A 2013 medical review concluded that "unhealthy commodity industries should have no role in the formation of national or international NCD [non-communicable disease] policy".

There have been similar efforts to steer coverage of sugar-related health information in popular media, including news media and social media.


Obesity and metabolic syndrome
A 2003 World Health Organization technical report provided evidence that high intake of sugary drinks (including ) increased the risk of by adding to overall . By itself, sugar is not a factor causing obesity and metabolic syndrome, but rather – when over-consumed – is a component of unhealthy dietary behavior. showed that excessive consumption of sugar-sweetened beverages increased the risk of developing type 2 diabetes and metabolic syndrome – including weight gain and obesity – in adults and children.


Hyperactivity
A 2019 found that sugar consumption does not improve mood, but can lower alertness and increase fatigue within an hour of consumption. Some studies report evidence of between high consumption of refined sugar and . One review of low-quality studies of children consuming high amounts of showed association with higher rates of unhealthy behaviors, including smoking and excessive alcohol use, and with hyperactivity and .


Tooth decay
The 2003 WHO report stated that "Sugars are undoubtedly the most important dietary factor in the development of ". A review of human studies showed that the incidence of caries is lower when sugar intake is less than 10% of total energy consumed.


Nutritional displacement
The argument states that a diet high in added sugar will reduce consumption of foods that contain essential nutrients. This nutrient displacement occurs if sugar makes up more than 25% of daily energy intake,
(2021). 9780309085250, National Academies Press. .
a proportion associated with poor diet quality and risk of obesity. Displacement may occur at lower levels of consumption.


Alzheimer's disease
Claims have been made of a sugar–Alzheimer's disease connection, but there is inconclusive evidence that cognitive decline is related to dietary fructose or overall energy intake.


Recommended dietary intake
The World Health Organization recommends that both adults and children reduce the intake of free sugars to less than 10% of total energy intake, and suggests a reduction to below 5%. "Free sugars" include and added to foods, and sugars found in fruit juice and concentrates, as well as in honey and syrups. According to the WHO, "these recommendations were based on the totality of available evidence reviewed regarding the relationship between free sugars intake and body weight (low and moderate quality evidence) and dental caries (very low and moderate quality evidence)."

On May 20, 2016, the U.S. Food and Drug Administration announced changes to the Nutrition Facts panel displayed on all foods, to be effective by July 2018. New to the panel is a requirement to list "Added sugars" by weight and as a percent of Daily Value (DV). For vitamins and minerals, the intent of DVs is to indicate how much should be consumed. For added sugars, the guidance is that 100% DV should not be exceeded. 100% DV is defined as 50 grams. For a person consuming 2000 calories a day, 50 grams is equal to 200 calories and thus 10% of total calories—the same guidance as the World Health Organization. To put this in context, most 355 mL (12 US fl oz) cans of soda contain 39 grams of sugar. In the United States, a government survey on food consumption in 2013–2014 reported that, for men and women aged 20 and older, the average total sugar intakes—naturally occurring in foods and added—were, respectively, 125 and 99 g/day. What We Eat In America, NHANES 2013–2014.


Measurements
Various culinary sugars have different densities due to differences in particle size and inclusion of moisture.

gives the following weight to volume conversions (in United States customary units):

  • Firmly packed brown sugar 1 lb = 2.5 cups (or 1.3 L per kg, 0.77 kg/L)
  • Granulated sugar 1 lb = 2.25 cups (or 1.17 L per kg, 0.85 kg/L)
  • Unsifted confectioner's sugar 1 lb = 3.75 cups (or 2.0 L per kg, 0.5 kg/L)

The "Engineering Resources – Bulk Density Chart" published in Powder and Bulk gives different values for the bulk densities:

  • Beet sugar 0.80 g/mL
  • Dextrose sugar 0.62 g/mL ( = 620 kg/m^3)
  • Granulated sugar 0.70 g/mL
  • Powdered sugar 0.56 g/mL


Society and culture
Manufacturers of sugary products, such as and candy, and the Sugar Research Foundation have been accused of trying to influence consumers and medical associations in the 1960s and 1970s by creating doubt about the potential health hazards of sucrose overconsumption, while promoting as the main dietary risk factor in cardiovascular diseases. In 2016, the criticism led to recommendations that diet emphasize the need for high-quality research that accounts for multiple on development of cardiovascular diseases.


See also

==Gallery==

sugar (grey), ]]


Further reading


External links
  • Sugar at the National Health Service

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