
[Middle English sugre, from Old French sukere, from Medieval Latin succārum, from Old Italian zucchero, from Arabic sukkar, from Persian shakar, from Sanskrit śarkarā, grit, ground sugar.]
sugarer sug'ar·er n.| suffixes added to proper names, suffix, suddenness | |
| suggest, suggestible, suit, suite |
Any of a group of water-soluble carbohydrates of relatively low molecular weight and typically having a sweet taste. The simple sugars are called monosaccharides. More complex sugars comprise between two and ten monosaccharides linked together: disaccharides contain two, trisaccharides three, and so on. The name is often used to refer specifically to sucrose (table sugar).
A water-soluble substance with a sweet flavor. Sugar is extracted from sugarcane and sugar beet. Its scientific name is "saccharose."
Sugarcane is originally from India or New Guinea. Its carbohydrates, containing 12%-15% saccharose, are found in the core of the stalks. One ton of sugarcane provides about 275 lb (125 kg) of sugar.
Sugar beet, originally from Europe, is related to the beet vegetable. It is a large root containing 15%-20% saccharose.
It is estimated that about 75%-80% of the sugar consumed comes from processed foods. Sugar is added to charcuterie products (sausages and deli meats), pizza, soy sauce, stock cubes, sauces, peanut butter and mayonnaise.
Approximately 100 sugars have been identified in food chemistry (glucose, fructose and maltose, in particular). They are grouped under the terms "carbohydrates" or "sugars." Most foods contain natural carbohydrates. Honey, maple syrup, corn syrup, sugar and molasses are almost entirely composed of carbohydrates. The main forms of carbohydrate include the simple carbohydrates, complex carbohydrates, fiber and sugar alcohols or polyols (sorbitol, mannitol and xylitol).
Simple carbohydrates are divided into monosaccharides and disaccharides.
Monosaccharides are made up of a single sugar molecule. They include glucose, fructose, galactose and mannose.
Disaccharides are formed from two monosaccharides and have one less water molecule. The most common are sucrose, lactose and maltose.
Glucose (or "dextrose") is the most abundant monosaccharide in nature. It is present in fruits, cereals and grains, honey, nuts, flowers and leaves. The glucose found in the blood serves to maintain body temperature and provide the necessary energy for vital processes.
Fructose (or "levulose") is found in natural form in fruits (2%-7%), honey (40%) and various other foods. It is the sweetest-tasting of all of the sugars, its sweetening power being one-and-a-half times greater than table sugar; it is also about three times sweeter than glucose. Fructose is refined into crystalline and syrup forms.
Generally speaking, any sugar solution that is heated with an acidic ingredient or added enzymes will cause the sugar molecule to break down into glucose and fructose; this mixture is called "invert sugar."
Invert sugar, like corn syrup, resists crystallization and holds moisture, which makes both of these products popular in the confectionery and baking industries. They are also used in making sweetmeats, preserves and glazes. Invert sugar is only sold in liquid form. It is also sweeter than sucrose.
Sucrose (or "saccharose") is made up of glucose and fructose. It occurs in plants that perform photosynthesis. It is particularly abundant in sugarcane, sugar beet and maple syrup. It is the common white sugar or table sugar.
Lactose is made up of glucose and galactose. It is only present in milk (5%-8% in breast milk and 4%-6% in cow's milk). It is used as a food additive in several food products, as a flavor enhancer among other things.
Maltose is made up of two glucose molecules. Maltose is created when the starch found in malt is hydrolyzed through the action of the diastase enzyme. Commonly used in the food industry, it is incorporated into beer, bread, infant foods and coffee substitutes.
Complex sugars (polysaccharides or complex carbohydrates) include starch and dietary fiber. They are formed from at least three simple sugar molecules bound together in a complex way. Starch grains swell in water to up to 30 times their size.
Only foods of plant origin contain starch, especially grains and cereals, legumes, root and tuberous vegetables. These carbohydrates slow down the rise of glucose and insulin levels in the blood. High consumption of complex carbohydrates is thought to be linked to a reduction in overall blood cholesterol.
Polysaccharide fibers include cellulose, the hemicelluloses, pectic substances and lignin. The human body needs fiber, in particular to regulate gastrointestinal functions and prevent constipation. A diet high in fiber is an important factor in the reduction of coronary-related illness and certain cancers (colon cancer). In North America, less than half of the recommended fiber intake is consumed.
• Cellulose essentially comes from legumes and vegetables, whereas pectin is abundant in apples and citrus fruits.
• The hemicelluloses represent the main component of the fiber in cereals and grains. They shorten the time it takes for food to pass through the intestinal
tract.
• Pectic substances are found in citrus fruits, apples, squash and cabbages. They delay the passage of food through the intestinal tract, which slows down the absorption of glucose; they also reduce blood cholesterol levels. Seeds are high in mucilages, which contain pectic substances that have the properties of gelling and retaining water. They are mainly found in legumes, oats and barley; they have the same effects as pectic substances.
• Lignin is not a carbohydrate, but it is a basic component of the cell walls of certain plants; it forms part of insoluble fiber and has the same effect.
Harvesting and refining
Sugarcane is harvested when it is still green, and its leaves are removed. It is immediately cut into pieces called "billets"; these are sent to the refinery, where they are crushed, then passed through cylinders that extract the blackish juice from which the sugar is made.
The cane juice then undergoes various treatments, namely affination, clarification, decolorization and crystallization. It is concentrated by boiling, then purified. Affination washes the sugar crystals and separates out the layers of molasses from the impurities contained in raw sugar. Clarification extracts the impurities that exist inside or alongside the sugar crystals through a dissolving process. The syrup, which can be a light or dark yellow in color, is decolorized in order to produce white sugar crystals. Decolorization extracts any remaining impurities, as well as molasses. Crystallization turns the decolorized syrup into pure sugar crystals through a process of evaporation or separation using a centrifuge.
Molasses is the sugar syrup obtained during the last stage of crystallization. At the third extraction, black molasses, a by-product of sugarcane, is obtained. Sugar that is clarified and decolorized (refined sugar) is then dried using hot air, graded and packaged.
Sugar beet is cut into slices (sugar beet chips), from which juice is extracted by diffusion and hot water is mixed through the chips (sugarcane juice can also be extracted by diffusion). Sugar beet juice is then processed in a similar way to sugarcane juice.
Several products may be produced from refining the juice of sugarcane and sugar beet.
Raw sugar is the result of the first extraction. It is covered with a thin film of syrup and can contain impurities. It contains 96%-99% sucrose. The raw sugar derived from sugar beet is yellowish in color, and brownish when derived from sugarcane. A small percentage of raw sugar is sold as is, but the majority is refined to obtain white granulated sugar. The sale of raw sugar is prohibited in the United States unless its impurities have been removed. Raw sugar can be partly refined and sold in block form, when it is called "turbinado" or "demerara" sugar; it then contains about 95% sugar. Its mineral content is small and insignificant from a nutritional point of view.
Brown sugar consists of fine, relatively unrefined crystals that are still covered in a thin layer of molasses. It comes only from sugarcane.
These days, brown sugar is almost always white sugar to which molasses has been added, and sometimes an artifical flavor and color. Brown sugar can be light or dark (stronger flavored), depending on the amount of molasses still in it. These sugars are interchangeable in most recipes. Brown sugar contains 91%-96% sucrose.
White sugar (or "table sugar," "refined sugar," "granulated sugar") is the most well-known common sugar. It is made of pure dry sugar crystals obtained once the refining process is complete. It contains 99.9% sucrose and no vitamins or mineral salts.
Powdered sugar or confectioner's sugar, also called "icing sugar," is pulverized white sugar to which about 3% cornstarch is added to prevent lumps forming. It absorbs more quickly into liquids.
Molasses is a by-product of cane sugar refining. The molasses obtained from the first extraction (called "first molasses") is pale and very sweet. The molasses from the second extraction, called "second" or table molasses, is darker and moderately sweet. The molasses from the third and last extraction is black ("black-strap molasses") and less sweet with a strong flavor; it is the kind that contains the most nutrients. Molasses contains 35% sucrose and 20% glucose and fructose.
It can be used to make alcohol and yeast, for human consumption and for making rum.
Liquid sugar is a sugar syrup in the form of a clear solution containing a highly refined sugar. It is used
in canned foods, sweets, pastry-making, ice cream, etc.
Serving Ideas
Refined sugar is used to modify the texture of foods, to enhance their flavor, to sweeten acidic or tart-tasting foods, to feed yeast (when making bread, for example) and as a preservative.
Sugar is essential for making meringues, ice creams, sorbets, syrups and confectionery. It is used as a condiment (glazed vegetables, glazed ham, sweet-and-sour dishes) and is one of the main ingredients in pastries and sweets.
To reduce sugar intake:
• Gradually reduce the amount of sugar added to foods that do not really need it until it is completely eliminated (coffee, tea, vinaigrette, juice, yogurt and on grapefruit).
• Enhance the reduced amount of sugar using spices (cinnamon, ginger, nutmeg) or replace the sugar with fruit that give a natural sweetness to cereal, muffins and cookies.
• Reduce sugar by half in most recipes for cakes, muffins, quick breads, pastries and other desserts that call for more than ²∕3 cup (175 ml).
• Read labels: generally the suffix "-ose" indicates the presence of sugar; if several names for sugar are found on the list of ingredients, the food will often contain too much sugar.
Significantly reducing sugar intake may lead to certain symptoms such as irritability and fatigue; these symptoms usually only last a week.
Storing
At room temperature: indefinitely, away from moisture, in a cool and dry place and in airtight containers. Molasses can be stored at room temperature, as well as in the fridge, which makes it thicker and more difficult to pour.
Nutritional Information
The nutritional value of sugar is very limited. Sugar contains no protein, fat or fiber and has no vitamins or minerals. It is essentially made up of carbohydrates and provides 16 calories per teaspoon (5 ml) for granulated sugar, or 9 calories per teaspoon (5 ml) for powdered sugar.
Sugar and very sugary foods are often called "empty calorie" foods because of their lack of nutrients. Overconsumption of sugar, especially saccharose, is thought to be a determining factor in the appearance of tooth decay. This is why brushing teeth is recommended after eating sweet or sticky foods.
With regard to establishing a link between sugar consumption and the development of glucose intolerance, the current level of sugar consumption does not represent a risk factor. There is, moreover, no conclusive proof linking dietary sugar to the development of coronary illness or obesity or behavioral changes in children.
Sugar can cause the retention of fluids, which is why some people may feel thirsty after eating sweet foods.
Browse other sugars, cocoa and carob:
Browse other foods: Vegetables | Legumes | Fruits | Nuts and Seeds | Seaweeds | Mushrooms | Cereals and Grains | Fish | Crustaceans | Mollusks | Herbs, Spices and Seasonings | Meats | Variety Meats | Delicatessen Meats | Poultry | Dairy Products | Sugars, Cocoa and Carob | Fats and Oils | Binders and Leavenings | Coffee, Tea and Herbal Teas
For more information on sugar, visit Britannica.com.
Background
Before the birth of Jesus of Nazareth, sugarcane (from which sugar is made) was harvested on the shores of the Bay of Bengal; it spread to the surrounding territories of Malaysia, Indonesia, Indochina, and southern China. The Arabic people introduced "sugar" (at that point a sticky paste, semi-crystallized and believed to have medicinal value) to the Western world by bringing both the reed and knowledge for its cultivation to Sicily and then Spain in the eighth and ninth centuries. Later, Venice—importing finished sugar from Alexandria—succeeded in establishing a monopoly over this new spice by the fifteenth century; at that point, it started buying raw sugar, and even sugarcane, and treating it in its own refineries. Venice's monopoly, however, was short-lived. In 1498, Portuguese navigator Vasco da Gama returned from India bringing the sweet flavoring to Portugal. Lisbon started to import and refine raw sugar, and, in the sixteenth century, it became the European sugar capital. It was not long before the sweetener was available in France, where its primary function continued to be medicinal, and during the reign of Louis XIV, sugar could be bought by the ounce at the apothecary. By the 1800s, sugar (though still expensive) was widely available to both upper and middle classes.
Raw Materials
Sugar is a broad term applied to a large number of carbohydrates present in many plants and characterized by a more or less sweet taste. The primary sugar, glucose, is a product of photosynthesis and occurs in all green plants. In most plants, the sugars occur as a mixture that cannot readily be separated into the components. In the sap of some plants, the sugar mixtures are condensed into syrup. Juices of sugarcane (Saccharum officinarum) and sugar beet (Beta vulgaris) are rich in pure sucrose, although beet sugar is generally much less sweet than cane sugar. These two sugar crops are the main sources of commercial sucrose.
The sugarcane is a thick, tall, perennial grass that flourishes in tropical or subtropical regions. Sugar synthesized in the leaves is used as a source of energy for growth or is sent to the stalks for storage. It is the sweet sap in the stalks that is the source of sugar as we know it. The reed accumulates sugar to about 15 percent of its weight. Sugarcane yields about 2,600,000 tons of sugar per year.
The sugar beet is a beetroot variety with the highest sugar content, for which it is specifically cultivated. While typically white both inside and out, some beet varieties have black or yellow skins. About 3,700,000 tons of sugar are manufactured from sugar beet.
Other sugar crops include sweet sorghum, sugar maple, honey, and corn sugar. The types of sugar used today are white sugar (fully refined sugar), composed of clear, colorless or crystal fragments; or brown sugar, which is less fully refined and contains a greater amount of treacle residue, from which it obtains its color.
The Manufacturing
Process
Planting and harvesting
Sugarcane takes about seven months to mature in a tropical area and about 12-22 months in a subtropical area. At this time, fields of sugarcane are tested for sucrose, and the most mature fields are harvested first. In Florida, Hawaii, and Texas, standing cane is fired to burn off the dry leaves. In Louisiana, the six- to ten-feet (1.8- to 3-meter) tall cane stalks are cut down and laid on the ground before burning.
Preparation and processing
When the beets are delivered at the refinery, they are first washed and then cut into strips. Next, they are put into diffusion cells with water at about 175 degrees Fahrenheit (79.4 degrees Celsius) and sprayed with hot water countercurrently to remove the sucrose.
Juice extraction pressing
Purification of juice—clarification
and evaporation
The sugar beet solution, on the other hand, is purified by precipitating calcium carbonate, calcium sulfite, or both in it repeatedly. Impurities become entangled in the growing crystals of precipitate and are removed by continuous filtration.
The sugar beet sucrose solution, at this point, is also nearly colorless, and it likewise undergoes multiple-effect vacuum evaporation. The syrup is seeded, cooled, and put in a centrifuge machine. The finished beet crystals are washed with water and dried.
Crystallization
The growth of the crystals continues until the pan is full. When sucrose concentration reaches the desired level, the dense mixture of syrup and sugar crystals, called massecuite, is discharged into large containers known as crystallizers. Crystallization continues in the crystallizers as the massecuite is slowly stirred and cooled.
Centrifugaling
Once the sugar is centrifuged, it is "cut down" and sent to a granulator for drying. In some countries, sugarcane is processed in small factories without the use of centrifuges, and a dark-brown product (noncentrifugal sugar) is produced. Centrifugal sugar is produced in more than 60 countries while noncentrifugal sugar in about twenty countries.
Drying and packaging
Byproducts
The bagasse produced after extracting the juice from sugar cane is used as fuel to generate steam in factories. Increasingly large amounts of bagasse are being made into paper, insulating board, and hardboard, as well as furfural, a chemical intermediate for the synthesis of furan and tetrahydrofuran.
The beet tops and extracted slices as well the molasses are used as feed for cattle. It has been shown that more feed for cattle and other such animals can be produced per acre-year from beets than from any other crop widely grown in the United States. The beet strips are also treated chemically to facilitate the extraction of commercial pectin.
The end product derived from sugar refining is blackstrap molasses. It is used in cattle feed as well as in the production of industrial alcohol, yeast, organic chemicals, and rum.
Quality Control
Mill sanitation is an important factor in quality control measures. Bacteriologists have shown that a small amount of sour bagasse can infect the whole stream of warm juice flowing over it. Modern mills have self-cleaning troughs with a slope designed in such a way that bagasse does not hold up but flows out with the juice stream. Strict measures are taken for insect and pest controls.
Because cane spoils relatively quickly, great steps have been taken to automate the methods of transportation and get the cane to the mills as quickly as possible. Maintaining the high quality of the end-product means storing brown and yellow refined sugars (which contain two percent to five percent moisture) in a cool and relatively moist atmosphere, so that they continue to retain their moisture and do not become hard.
Most granulated sugars comply with standards established by the National Food Processors Association and the pharmaceutical industry (U.S. Pharmacopeia, National Formulary).
Where To Learn More
Books
Clarke, M. A., ed. Chemistry & Processing of Sugarbeet & Sugarcane. Elsevier Science Publishing Co., Inc., 1988.
Hugot, E. Handbook of Cane Sugar Engineering. 3rd ed. Elsevier Science Publishing Co., Inc., 1986.
Lapedes, Daniel, ed. McGraw Hill Encyclopedia of Food, Agriculture and Nutrition. McGraw Hill, 1977.
McGee, Harold. On Food and Cooking: The Science and Lore of the Kitchen. Collier Books, 1984.
Meade, G. P. Cane Sugar Handbook: A Manual for Cane Sugar Manufacturers and Their Chemists. John Wiley and Sons, 1977.
Pennington, Neil L. and Charles Baker, eds. Sugar: A Users' Guide to Sucrose. Van Nostrand Reinhold, 1991.
Rost, Waverly. Food. Simon & Schuster, 1980.
Periodicals
"Sugar: Can We Make It On the Homestead?" Countryside & Small Stock Journal. May-June, 1987, p. 9.
Hayes, Joanne L. "Sugarloaf Lore," Country Living. March, 1989, p. 132.
"Squeezing All the Sweetness Out of Sugarcane—and More," Chemical & Engineering News. May 12, 1986, pp. 38-9.
[Article by: Eva Sideman]
Brown unrefined sugar, 96-98% pure, as imported for refining. Contaminated with mould spores, bacteria, cane fibre, and dirt.
Once a luxury only the extremely affluent could afford, sugar was called "white gold" because it was so scarce and expensive. Although Persia and ancient Arabia were cultivating sugar in the 4th century b.c., the Western World didn't know of it until the 8th century when the Moors conquered the Iberian peninsula. Early sugar wasn't the granulated, alabaster substance most of us know today. Instead, it came in the form of large, solid loaves or blocks ranging in color from off-white to light brown. Chunks of this rock-hard substance had to be chiseled off and ground to a powder with a mortar and pestle. Modern-day sugar is no longer scarce or expensive and comes in myriad forms from many origins. Sugar cane and sugar beets are the sources of most of today's sugar, also known as sucrose (which also comes from maple sap-see maple sugar-and sorghum). Other common forms of sugar are dextrose (grape or corn sugar), fructose (levulose), lactose (milk sugar) and maltose (malt sugar). The uses for sugar are countless. Besides its sweetening value, sugar adds tenderness to doughs, stability to mixtures such as beaten egg whites for meringue, golden-brown surfaces to baked goods and, in sufficient quantity, it contributes to the preservation of some foods. Granulated or white sugar is highly refined cane or beet sugar. This free-flowing sweetener is the most common form both for table use and for cooking. Granulated sugar is also available in cubes or tablets of various sizes, as well as a variety of textures. Superfine sugar, known in Britain as castor (or caster) sugar, is more finely granulated. Because it dissolves almost instantly, superfine sugar is perfect for making meringues and sweetening cold liquids. It can be substituted for regular granulated sugar cup for cup. Confectioners' or powdered sugar is granulated sugar that has been crushed into a fine powder. To prevent clumping, a small amount (about 3 percent) of cornstarch is added. Confectioners' sugar labeled XXXX is slightly finer than that labeled XXX but they can be used interchangeably and both may need to be sifted before using. Because it dissolves so readily, confectioners' sugar is often used to make icings and candy. It's also used decoratively, as a fine dusting on desserts. One and three-quarters (packed) cups confectioners' sugar equals 1 cup granulated sugar. Confectioners' sugar is called icing sugar in Britain and sucre glace in France. Decorating or coarse sugar (also called sugar crystals or crystal sugar) has granules about four times larger than those of regular granulated sugar. It's used for decorating baked goods and can be found in cake-decorating supply shops and gourmet markets. rock candy is an even larger form of sugar crystals. Colored sugar, also used for decorating, is tinted granulated sugar and can be found in several crystal sizes. Flavored sugar is granulated sugar that's been combined or scented with various ingredients such as cinnamon or vanilla (see vanilla sugar). All granulated sugar can be stored indefinitely if tightly sealed and kept in a cool, dry place. Today's brown sugar is white sugar combined with molasses, which gives it a soft texture. The two most commonly marketed styles of brown sugar are light and dark, with some manufacturers providing variations in between. In general, the lighter the brown sugar, the more delicate the flavor. The very dark or "old-fashioned" style has a more intense molasses flavor. Brown sugar is usually sold in 1-pound boxes or plastic bags-the latter help the sugar retain its moisture and keep it soft. Hardened brown sugar can be resoftened by placing it with an apple wedge in a plastic bag and sealing tightly for 1 to 2 days. A firmly packed cup of brown sugar may be substituted for 1 cup granulated sugar. Both granulated and liquid brown sugar are also now available. Neither of these forms should be substituted for regular brown sugar in recipes. Though similar in color, brown sugar should not be confused with raw sugar, the residue left after sugarcane has been processed to remove the molasses and refine the sugar crystals. The flavor of raw sugar is akin to that of brown sugar. In this raw state, however, sugar may contain contaminants such as molds and fibers. The so-called raw sugar marketed in the United States has been purified, negating much of what is thought to be its superior nutritive value. Two popular types of raw sugar are the coarse-textured dry Demerara sugar from the Demerara area of Guyana, and the moist, fine-textured Barbados sugar. Turbinado sugar is raw sugar that has been steam-cleaned. The coarse turbinado crystals are blond colored and have a delicate molasses flavor. Other sources of sugar include maple sap, palm sap and sorghum. Almost 100 percent of sugar is carbohydrate. Granulated white sugar contains about 770 calories per cup, as does the same weight (which equals about 2 cups) of confectioners' sugar. A cup of brown sugar is slightly higher at 820 calories. It also contains 187 milligrams of calcium, 56 of phosphorous, 4.8 of iron, 757 of potassium and 97 of sodium, compared to only scant traces of those nutrients found in granulated sugar. artificial sweeteners such as aspartame and saccharin are essentially calorie-free and are used as a sugar substitute both commercially and by the home cook. Sugar also comes in syrup form, the most common being cane syrup, corn syrup, golden syrup, honey, maple syrup, molasses, sorghum and treacle. See also glucose; jaggery; pulled sugar; rock sugar; spun sugar.
The expansion of European involvement in the sugar industry mirrored western Europe's expansion and domination of the Atlantic basin. Sugar, which had long been considered a luxury available only to the elites of medieval and renaissance Europe, was transformed into a household staple by the colonization of the New World. The combination of conquered tropical and subtropical lands, African slave labor, and capital advanced by northern European merchants transformed the European diet. Furthermore, sugar's importance to overseas trade is reflected in contemporary observations that proclaimed the sugar industry to be at the heart of national wealth; it was often noted that the plantation trade created enormous profits for sugar planters and merchants, employment for European laborers, and significant tax revenues for the mother countries. Although it is clear that sugar did indeed dominate colonial policy of the major powers in the seventeenth and eighteenth centuries, economic historians have recently questioned the extent to which sugar generated national riches.
Muslims first introduced sugarcane to the Mediterranean region in the seventh century. While the soils of the Levant, Sicily, Cyprus, Crete, and Malta supported this early cane cultivation, the actual export of sugar to Continental markets did not take place until the Crusades, when Venetian merchants provided the capital and mercantile connections required for regular trade. The historian Noel Deerr has suggested that this coordination of European credit and trade "may be seen [as] the germ of the colonial system" that was fully developed in the Americas during the early modern period.
The center of the European sugar supply moved west with Portuguese exploration of the Atlantic basin. Iberian settlers on the island of Madeira established commercial sugar production in 1432, as well as on the African coastal island of São Tomé, where African slave labor was used exclusively to produce sugar in the early sixteenth century. During the next hundred years, Portuguese settlers in Brazil replicated this slave-based business plan after briefly experimenting with indigenous labor. With the assistance of Dutch financiers, the Portuguese planters and mill owners of northeastern Brazil developed the most productive sugar-producing region in the world. This symbiotic relationship between the two imperial powers helped generate the lion's share of sugar consumed in Europe, but in 1624 the Dutch gained tighter financial control over the industry by using military force, capturing the richest sugar-growing regions of Brazil. Although the Dutch were eventually expelled, the chaos inflicted by war disrupted Brazilian sugar production, thereby providing an opportunity for English and French West Indian sugar growers to emerge as important competitors in supplying Europe's increasing demand for sugar.
The leading sugar-producing nations expended tremendous resources protecting their colonists and their plantation trade. Laws similar to Britain's Navigation Acts or France's Colonial Pact were implemented by every colonial power as a means of ensuring that the benefits of imperialism would be maximized. Adherents to this political philosophy believed that the colonists' role in the larger economy was subordinate to the home country's drive for riches and power. Thus, each nation's set of mercantilist laws was designed to control colonial trade so that the commerce from the colonies would provide home governments with valuable tax revenues while stimulating each respective nation's merchant navy.
The major sugar-planting zones of Brazil and the Caribbean littoral had an enormous appetite for slave labor. The growing demand for sugar in Europe, combined with the negative natural population growth, fueled an unprecedented demand for labor. Throughout the early modern period, European planters expanded total production while simultaneously ignoring the poor nutrition, diseaseinfested living conditions, and excessive work endured by their slaves. The relatively low cost of importing new African slaves permitted planters to maintain healthy profits despite the regular loss of life. To illustrate the human cost of supplying the European craving for sugar, over half of the 5.7 million slaves transported to the Americas during the eighteenth century were destined to work in the cane fields or in related branches of the industry.
The sheer volume of the slave trade, the capital-intensive nature of sugar planting, and the contemporary assumptions about the importance of sugar colonies have led some modern historians to conclude that sugar and slavery were essential to the economic development of the metropole. Eric Williams, an Oxford-trained West Indian historian, did the most to promote this thesis in Capitalism and Slavery (1944). In this monumental work, Williams argued that the demand for sugar created a highly profitable colonial trade, which enabled slavers from Bristol and Liverpool to dominate the forced migration of Africans during the peak years of the slave trade. He posited that the slave trade generated an important stream of British capital accumulation, and that these funds, combined with the profits generated from the sugar industry, fueled Britain's industrial revolution.
Scholarship since Capitalism and Slavery has revised Williams's estimate that the slave trade produced 30 percent returns to investors. Although there were, indeed, examples of slave traders earning significant sums of money on individual voyages, the slaving business was a very risky and competitive lottery, with many investors losing money. If, therefore, one considers the whole range of returns on slave trading, the average is calculated to have been somewhere between 5 and 10 percent during the eighteenth century. With this more realistic view of slave-trading profits, the economic historian Stanley Engerman calculated that the net national return on the British slave trade represented less than 1 percent of total British income. This deflated view of the slave trade's importance to the British economy has been matched by more moderate assessments of the effect the total sugar industry had on the home country. The most recent research describes the colonial sugar industry as an important sector that contributed to the economic growth of the major sugar-growing nations, but was not essential to the industrial transformation of England or Europe.
Bibliography
Curtin, Philip D. The Rise and Fall of the Plantation Complex: Essays in Atlantic History. Cambridge, U.K., 1990.
Deerr, Noel. The History of Sugar. Vols. 1 and 2. London, 1949–1950.
Eltis, David, and Stanley L. Engerman. "The Importance of Slavery and the Slave Trade to Industrializing Britain." Journal of Economic History 60 (2000): 123–144.
Klein, Herbert S. The Atlantic Slave Trade. Cambridge, U.K., 1999.
Morgan, Kenneth. Slavery, Atlantic Trade, and the British Economy, 1660–1800. Cambridge, U.K., 2000.
Williams, Eric. Capitalism and Slavery. Chapel Hill, N.C., 1944.
—DAVID RYDEN
| Description | Quantity | Energy (calories) |
Carbs (grams) |
Protein (grams) |
Cholesterol (milligrams) |
Weight (grams) |
Fat (grams) |
Saturated Fat (grams) |
| brown, pressed down | 1 cup | 820 | 212 | 0 | 0 | 220 | 0 | 0 |
| powdered, sifted | 1 cup | 385 | 100 | 0 | 0 | 100 | 0 | 0 |
| white, granulated | 1 cup | 770 | 199 | 0 | 0 | 200 | 0 | 0 |
| white, granulated | 1 pkt | 25 | 6 | 0 | 0 | 6 | 0 | 0 |
| white, granulated | 1 tbsp | 45 | 12 | 0 | 0 | 12 | 0 | 0 |
Dreaming about sugar could reflect a sense that life is sweet or a wish that life could be sweeter. Sugar is also a symbol of love, as when some refers to their love interest as "Sugar." Sugar can also be slang for everything from a kiss to cocaine.
Carbohydrates that can supply energy to living things. Common table sugar is sucrose. Some other sugars are fructose, which is found in fruits; lactose, which is found in milk; and glucose, which is the most common sugar in the bodies of animals and plants.
| sug, suey pow, sudser | |
| sugar daddy, suicide blonde, suit |
| suffix tree, sucrose-phosphate synthase, sucrose synthase | |
| sugar acid, sugar alcohol, sugar beet |
A sweet carbohydrate of both animal and vegetable origin, the two principal groups of which are the disaccharides and the monosaccharides. Unless qualified, e.g. fruit sugar, milk sugar, usually refers to sucrose.

| Nutritional value per 100 g (3.5 oz) | |
|---|---|
| Energy | 1,619 kJ (387 kcal) |
| Carbohydrates | 99.98 g |
| - Sugars | 99.91 g |
| - Dietary fiber | 0 g |
| Fat | 0 g |
| Protein | 0 g |
| Water | 0.03 g |
| Riboflavin (vit. B2) | 0.019 mg (2%) |
| Calcium | 1 mg (0%) |
| Iron | 0.01 mg (0%) |
| Potassium | 2 mg (0%) |
| Percentages are relative to US recommendations for adults. Source: USDA Nutrient Database |
|
| Nutritional value per 100 g (3.5 oz) | |
|---|---|
| Energy | 1,576 kJ (377 kcal) |
| Carbohydrates | 97.33 g |
| - Sugars | 96.21 g |
| - Dietary fiber | 0 g |
| Fat | 0 g |
| Protein | 0 g |
| Water | 1.77 g |
| Thiamine (vit. B1) | 0.008 mg (1%) |
| Riboflavin (vit. B2) | 0.007 mg (1%) |
| Niacin (vit. B3) | 0.082 mg (1%) |
| Vitamin B6 | 0.026 mg (2%) |
| Folate (vit. B9) | 1 μg (0%) |
| Calcium | 85 mg (9%) |
| Iron | 1.91 mg (15%) |
| Magnesium | 29 mg (8%) |
| Phosphorus | 22 mg (3%) |
| Potassium | 346 mg (7%) |
| Sodium | 39 mg (3%) |
| Zinc | 0.18 mg (2%) |
| Percentages are relative to US recommendations for adults. Source: USDA Nutrient Database |
|
Sugar is the generalised name for a class of sweet-flavored substances used as food. They are carbohydrates and as this name implies, are composed of carbon, hydrogen and oxygen. There are various types of sugar derived from different sources. Simple sugars are called monosaccharides and include glucose, fructose and galactose. The table or granulated sugar most customarily used as food is sucrose, a disaccharide. Other disaccharides include maltose and lactose.
Sugars are found in the tissues of most plants but are only present in sufficient concentrations for efficient extraction in sugarcane and sugar beet. Sugarcane is a giant grass and has been cultivated in tropical climates in the Far East since ancient times. A great expansion in its production took place in the 18th century with the setting up of sugar plantations in the West Indies and Americas. This was the first time that sugar became available to the common people who had previously had to rely on honey to sweeten foods. Sugar beet is a root crop and is cultivated in cooler climates and became a major source of sugar in the 19th century when methods for extracting the sugar became available. Sugar production and trade has changed the course of human history in many ways. It influenced the formation of colonies, the perpetuation of slavery, the transition to indentured labor, the migration of peoples, wars between 19th century sugar trade controlling nations and the ethnic composition and political structure of the new world.[1][2]
The world produced about 168 million tonnes of sugar in 2011.[3] The average person consumes about 24 kilograms of sugar each year, equivalent to over 260 food calories per person, per day.[4]
In modern times it has been questioned whether a diet high in sugars, especially refined sugars, is bad for health. Sugar has been linked to obesity and suspected of being implicated in diabetes, cardiovascular disease, dementia, macular degeneration and tooth decay. Numerous studies have been undertaken to try to clarify the position but the results remain largely unclear, mainly because of the difficulty of finding populations for use as controls that do not consume sugars.
|
Contents
|
Sugar has been produced in the Indian subcontinent[5] since ancient times. It was not plentiful or cheap in early times—honey was more often used for sweetening in most parts of the world. Originally, people chewed raw sugarcane to extract its sweetness. Sugarcane was a native of tropical South Asia and Southeast Asia.[6] Different species seem to have originated from different locations with Saccharum barberi originating in India and S. edule and S. officinarum coming from New Guinea.[6][7]
One of the earliest historical references to sugar cane is in 8th century BC. Chinese manuscripts that also refer to the fact that knowledge of sugar cane was derived from India.[8] It appears that in about 500 BC, residents of present-day India began making sugar syrup and cooling it in large flat bowls to make crystals that were easier to store and transport than the cane itself. In the local Indian language, these crystals were called khanda (खण्ड), which is the source of the word candy.[9]
Sugar remained relatively unimportant until the Indians discovered methods of turning sugarcane juice into granulated crystals that were easier to store and to transport.[10] Crystallized sugar was discovered by the time of the Imperial Guptas, around 5th century AD.[10] Indian sailors, who carried clarified butter and sugar as supplies, introduced knowledge of sugar on the various trade routes they travelled.[10] Buddhist monks brought sugar crystallization methods to China as they travelled around.[11] During the reign of Harsha (r. 606–647) in North India, Indian envoys in Tang China taught methods of cultivating sugarcane after Emperor Taizong of Tang (r. 626–649) made his interest in sugar known. China then established its first sugarcane plantations in the seventh century.[12] Chinese documents confirm at least two missions to India, initiated in 647 AD, to obtain technology for sugar-refining.[13] In South Asia, the Middle East and China, sugar became a staple of cooking and desserts.
The triumphant progress of Alexander the Great was halted on the banks of the Indus River by the refusal of his troops to go further east. They saw people in the Indian subcontinent growing sugarcane and making granulated, salt-like sweet powder, locally called साखर, pronounced as saccharum (ζάκχαρι). On their return journey, the Macedonian soldiers carried the "honey bearing reeds" home with them. Sugarcane remained a little known crop in Europe for over a millennium, sugar a rare commodity, and traders of sugar wealthy. Venice, at the height of its financial power, was the chief sugar-distributing center of Europe.[8]
Crusaders brought sugar home with them to Europe after their campaigns in the Holy Land, 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, where it supplemented honey which had previously been the only available sweetener.[14] Crusade chronicler William of Tyre, writing in the late 12th century, described sugar as "very necessary for the use and health of mankind".[15]
In August 1492, Christopher Columbus stopped at La Gomera in the Canary Islands, for wine and water, intending to stay only four days. He became romantically involved with the Governor of the island, Beatriz de Bobadilla y Ossorio, and stayed a month. When he finally sailed she gave him cuttings of sugarcane, which became the first to reach the New World.[16]
Sugar was a luxury in Europe prior to the 18th century when it became more widely available. It then became popular and by the 19th century it was considered a necessity. This evolution of taste and demand for sugar as an essential food ingredient unleashed major economic and social changes.[1] It drove, in part, colonization of tropical islands and nations where labor-intensive sugarcane plantations and sugar manufacturing could thrive. The demand for cheap and docile labor to perform the hard work involved in its cultivation and processing drove first, the slave trade from Africa (in particular West Africa), followed by the indentured labor trade from South Asia (in particular India).[2][17][18] Millions of slave and indentured laborers were brought into the Caribbean, Indian Ocean, Pacific Islands, East Africa, Natal, north and eastern parts of South America, and southeast Asia. The modern ethnic mix of many nations that have been settled in the last two centuries has been influenced by sugar.[19][20][21]
Sugar also led to some industrialization of former colonies. For example, Lieutenant J. Paterson, of the Bengal establishment, persuaded the British Government that sugar cane could be cultivated in British India with many advantages and at less expense than in the West Indies. As a result, a number of sugar factories were established in Bihar in eastern India.[22]
During the Napoleonic Wars, sugar beet production increased in continental Europe because of the difficulty of importing sugar at times in which shipping was subject to blockade. By 1880, sugar beet was the main source of sugar in Europe though the United Kingdom continued to import the main part of its sugar from its colonies.[23]
Until the late nineteenth century sugar was purchased in loaves, which had to be cut using implements called 'nips',[24] while in later years, bags of sugar became more common. Henry Tate of Tate & Lyle was an early proponent of sugar cubes, which he manufactured at his sugar refineries in Liverpool and London.[25]
The etymology reflects the spread of the commodity. The English word "sugar"[26] originates from the Arabic word سكر sukkar, itself from the Persian shakar,[27] itself derived from Sanskrit शर्करा sharkara.[28] It most probably came to England by way of Italian merchants. The contemporary Italian word is zucchero, whereas the Spanish and Portuguese words, azúcar and açúcar respectively, have kept a trace of the Arabic definite article. The Old French word is zuchre – contemporary French sucre. The earliest Greek word attested is σάκχαρις (sákkʰaris).[29][30] A satisfactory pedigree explaining the spread of the word has yet to be done. Note that the English word jaggery (meaning "coarse brown Indian sugar") has similar ultimate etymological origins (presumably in Sanskrit).
Glucose, fructose and galactose are all simple sugars, monosaccharides, 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 isomers with dextro- and laevo-rotatory forms which cause polarized light to diverge to the right or the left.[31]
Glucose, dextrose or grape sugar occurs naturally in fruits and plant juices and is the primary product of photosynthesis. Most ingested carbohydrates are converted into glucose during digestion and it is the form of sugar that is transported round the bodies of animals in the bloodstream. It can be manufactured from starch by the addition of enzymes or in the presence of acids. 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.[32]
Fructose 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 hydrolized corn starch which has been processed to yield corn syrup, with enzymes then added to convert part of the glucose into fructose.[33]
Galactose does not generally occur in the free state but is a constituent with glucose of the disaccharide lactose 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.[34]
Sucrose, maltose and lactose are all compound sugars, disaccharides, with the general formula C12H22O11. They are formed by the combination of two monosaccharide molecules with the exclusion of a molecule of water.[31]
Sucrose is found in the stems of sugar cane and roots of sugar beet. It also occurs naturally alongside fructose and glucose in other plants, particularly 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.[31] 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 sucrases.[35]
Maltose is formed during the germination of certain grains, most notably barley, where it is the source of the malt used in the manufacture of beer. A molecule of maltose is formed by the combination of two molecules of glucose. It is less sweet than glucose, fructose or sucrose.[31] It is formed in the body during the digestion of starch by the enzyme amylase and is itself broken down during digestion by the enzyme maltase.[36]
Lactose 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 lactase during digestion. Children have this enzyme but some adults no longer form it and they are unable to digest lactose.[37]
Sugarcane (Saccharum spp.) is a perennial grass in the family Poaceae. It is cultivated in tropical and sub-tropical regions for the sucrose that is found in its stems. It requires a frost-free climate with sufficient rainfall during the growing season to make full use of the plant's great growth potential. The crop is harvested mechanically or by hand, chopped into lengths and conveyed rapidly to the processing plant. Here it is either milled and the juice extracted with water or the sugar is extracted by diffusion. The juice is then clarified with lime and heated to kill enzymes. The resulting thin syrup is then concentrated in a series of evaporators and then further water is removed by evaporation in vacuum containers. The resulting supersaturated solution is seeded with sugar crystals and the sugar crystallizes out and is separated from the fluid and dried. Molasses is a by-product of the process and the fibre from the stems, known as bagasse, is burned to provide energy for the boiling of the syrup. The crystals of raw sugar have a sticky brown coating and can either be used as they are or can be bleached by sulphur dioxide or treated in a carbonation process to produce a whiter product.[38]
Sugar beet (Beta vulgaris) is an annual plant in the family Amaranthaceae, the tuberous root of which contains a high proportion of sucrose. It is cultivated 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 a clamp in the field for some weeks before being transported to the processing plant. Here the crop is washed and sliced and the sugar extracted by diffusion. The raw juice is then treated with lime and carbonated in a number of stages in order to purify it. Water is evaporated by boiling the syrup under a vacuum. The syrup is then cooled and seeded with sugar crystals. The white sugar which crystallizes out can be separated in a centrifuge and dried. It requires no further refining.[39]
Cane sugar requires further processing to provide the free-flowing white table sugar required by the consumer. 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 which 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 either treated by a carbonation or a phosphatation process. Both involve the precipitation of a fine solid in the syrup and when this is filtered out, a lot of the impurities are removed at the same time. Removal of colour is achieved by either using a granular activated carbon 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 in a centrifuge and the white crystals are dried in hot air, ready to be packaged or used. The surplus liquor is made into refiners' molasses.[40]
The five largest producers of sugar in 2010 were Brazil, India, the European Union, China and Thailand. The largest exporters in 2010 were Brazil, Thailand, Australia and India, while the largest importers were the European Union, United States and Indonesia. Currently, Brazil has the highest per capita consumption of sugar, followed by Australia, Thailand and the European Union.[41][42]
Granulated sugars are used at the table to sprinkle on foods and to sweeten hot drinks and in home baking to add sweetness and texture to cooked products. They are also used as a preservative to prevent micro-organisms growing and perishable food from spoiling as in jams, marmalades and candied fruits.[43]
Milled sugars are ground to a fine powder. They are used as icing sugar, for dusting foods and in baking and confectionery. [44]
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.[44]
Brown sugars are granulated sugars with the grains coated in molasses to produce a light, dark or demerara sugar. They are used in baked goods, confectionery and toffees.[44]
Sugar cubes are white or brown granulated sugars pressed together in block shape. They are used to sweeten drinks.[44]
Liquid sugars are strong syrups consisting of 67% granulated sugar dissolved in water. They are used in the food processing of a wide range of products including beverages, ice cream and jams.[44]
Invert sugars and syrups are blended to manufacturers specifications and are used in breads, cakes and beverages for adjusting sweetness, aiding moisture retention and avoiding crystallization of sugars.[44]
Syrups and treacles are dissolved invert sugars heated to develop the characteristic flavours. Treacles have added molasses. They are used in a range of baked goods and confectionery including toffees and licorice.[44]
Low calorie sugars and sweeteners are often made of maltodextrin with added sweeteners. Maltodextrin is an easily digestible synthetic polysaccharide consisting of short chains of glucose molecules and is made by the partial hydrolysis of starch. The added sweeteners are often aspartame, saccharin, stevia or sucralose.[45]
Polyols are sugar alcohols and are used in chewing gums where a sweet flavor is required that lasts for a prolonged time in the mouth.[46]
Sugar is an important part of worldwide human food balance sheet. After cereals and vegetable oils, sugar derived from sugar cane and beets provided more kilocalories per capita per day on average than other food groups.[47] According to FAO, about 24 kilograms of sugar, equivalent to over 260 food calories per day, was, on average, consumed annually per person of all ages in the world in 1999. Even with rising human population, sugar consumption is expected to increase to 25.1 kilograms per person by 2015.[4]
The per capita consumption of refined sugar in America has varied between 27 to 46 kilograms in the last 40 years. In 2008, American per capita total consumption of sugar and sweeteners, exclusive of artificial sweeteners, equalled 61.9 kilograms per year (136.2 pounds). This consisted of 29.65 kg (65.4 lb) pounds of refined sugar and 31 kg (68.3 lb) pounds of corn-derived sweeteners per person.[48][49]
Some studies involving the health impact of sugars are effectively inconclusive. The WHO and FAO meta studies have shown directly contrasting impacts of sugar in refined and unrefined forms [50] and since most studies do not use a population who are not consuming any "free sugars" at all, the baseline is effectively flawed (or as the report puts it, the studies are "limited"). Hence there are articles such as Consumer Reports on Health that said in 2008, "Some of the supposed dietary dangers of sugar have been overblown. Many studies have debunked the idea that it causes hyperactivity, for example."[51] Despite this, the article continues to discuss other health impacts of sugar. Other articles and studies refer to the increasing evidence supporting the links between refined sugar and hyperactivity.[52] The WHO FAO meta-study suggests that such inconclusive results are to be expected when some studies do not effectively segregate or control for free sugars as opposed to sugars still in their natural form (entirely unrefined) while others do.[50]
Sugar, because of its simpler chemical structure, may raise blood glucose levels more quickly than starch. This finding suggests that this basic differentiation between starch and sugar is insufficient reason to segregate these two substances for controlling blood glucose levels in diabetics, the idea behind carbohydrate counting.[53] A more effective distinction could be that suggested by multiple meta-studies between free sugars and naturally-occurring sugars which suggest that they have different impacts on health.[50][54]
Studies on the link between sugars and diabetes are inconclusive, with some suggesting that eating excessive amounts of sugar does not increase the risk of diabetes, although the extra calories from consuming large amounts of sugar can lead to obesity, which may itself increase the risk of diabetes.[55][56][56][57][58][59][59][60] Others show correlation between refined sugar (free sugar) consumption and the onset of diabetes, and negative correlation with the consumption of fiber. [61][62][63][64] including a 2010 meta-analysis of eleven studies involving 310,819 participants and 15,043 cases of type 2 diabetes.[65] This found that "SSBs (sugar-sweetened beverages) may increase the risk of metabolic syndrome and type 2 diabetes not only through obesity but also by increasing dietary glycemic load, leading to insulin resistance, β-cell dysfunction, and inflammation". As an overview to consumption related to chronic disease and obesity, the World Health Organization's independent meta-studies specifically distinguish free sugars ("all monosaccharides and disaccharides added to foods by the manufacturer, cook or consumer, plus sugars naturally present in honey, syrups and fruit juices") from sugars naturally present in food. The reports prior to 2000 set the limits for free sugars at a maximum of 10% of carbohydrate intake, measured by energy, rather than mass, and since 2002[50] have aimed for a level across the entire population of less than 10%. The consultation committee recognized that this goal is "controversial. However, the Consultation considered that the studies showing no effect of free sugars on excess weight have limitations."[50]
A number of studies in animals have suggested that chronic consumption of refined sugars can contribute to metabolic and cardiovascular dysfunction. Some experts have suggested that refined fructose is more damaging than refined glucose in terms of cardiovascular risk.[66] Cardiac performance has been shown to be impaired by switching from a carbohydrate diet including fiber to a high-carbohydrate diet.[67] Switching saturated fatty acids for carbohydrates with high glycemic index values shows a statistically significant positive association with the risk of myocardial infarction.[68] Other studies have found links between high fat and high glycemic index carbohydrates accelerates the development of cardiac pathology and pump dysfunction in hypertension despite no signs of diabetes and only a modest level of obesity, suggesting that the link between obesity and coronary heart disease should be shifted towards macronutrients and the high glycemic load typical of the "junk-food" diet.[69]
The consumption of added sugars has been positively associated with multiple measures known to increase cardiovascular disease risk amongst adolescents as well as adults.[70] Studies are suggesting that the impact of refined carbohydrates or high glycemic load carbohydrates are more significant than the impact of saturated fatty acids on cardiovascular disease.[71][72] A high dietary intake of sugar (in this case, sucrose or disaccharide) can substantially increase the risk of heart and vascular diseases. According to a Swedish study of 4301 people undertaken by Lund University and Malmö University College, sugar was associated with higher levels of bad blood lipids, causing a high level of small and medium low-density lipoprotein (LDL) and reduced high-density lipoprotein (HDL). In contrast, the amount of fat eaten did not affect the level of blood fats. As a side note, moderate quantities of alcohol and protein were linked to an increase in the good HDL blood fat.[73]
It is suggested that Alzheimer Disease is linked with the western diet. This is characterised by high intakes of red meat, sugary foods, high-fat foods and refined grains. It has been hypothesized that dementia could be prevented by the taking of mono-supplements of specific vitamins or drugs but studies have shown that this approach does not show appreciable results.[74]
Dietary pattern analysis considers overall eating patterns, comparing diets of people with Alzheimer's disease to diets of healthy controls using factor analysis. This analysis shows a major eating pattern for those with Alzheimer's characterised by a high intake of meat, butter, high-fat dairy products, eggs and refined sugar, while the major eating pattern for those without Alzheimer's was characterised by a high intake of grains and vegetables.[75]
One group of experimenters compared a normal rodent diet (19% protein, 5% fat and 60% complex carbohydrate) with free access to water against the same diet but with free access to a 10% sucrose solution. The experimental results underscore the potential role of dietary sugar in the pathogenesis of Alzheimer disease and suggest that controlling the consumption of sugar-sweetened beverages may be an effective way to curtail the risk of developing the disease.[76]
There are links between free sugar consumption and macular degeneration in older age.[77]
In regard to contributions to tooth decay, the role of free sugars is also recommended to be below an absolute maximum of 10% of energy intake, with a minimum of zero. There is "convincing evidence from human intervention studies, epidemiological studies, animal studies and experimental studies, for an association between the amount and frequency of free sugars intake and dental caries" while other sugars (complex carbohydrate) consumption is normally associated with a lower rate of dental caries.[54] Lower rates of tooth decay have been seen in individuals with hereditary fructose intolerance.[78]
The term sugar usually refers to sucrose, which is also called "table sugar" or "saccharose." Sucrose is a white crystalline disaccharide. It is often obtained from sugar cane or sugar beet.[79] Sucrose is the most popular of the various sugars for flavoring, as well as properties (such as mouthfeel, preservation, and texture) of beverages and food.
"Sugar" can also be used to refer to water-soluble crystalline carbohydrates with varying sweetness. Sugars include monosaccharides (e.g., glucose, fructose, galactose), disaccharides (e.g., sucrose, lactose, maltose), trisaccharides, and oligosaccharides,[80] in contrast to complex carbohydrates such as polysaccharides. Corn syrup, dextrose, crystalline fructose, and maltose, for example, are used in manufacturing and preparing food.
Different culinary sugars have different densities due to differences in particle size and inclusion of moisture.
The Domino Sugar Company has established the following volume to weight conversions: [81]
Bulk density[82]
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.[83]
Scientifically, sugar loosely refers to a number of carbohydrates, such as monosaccharides, disaccharides, or oligosaccharides. Monosaccharides are also called "simple sugars," the most important being glucose. Almost all sugars have the formula CnH2nOn (n is between 3 and 7). Glucose has the molecular formula C6H12O6. The names of typical sugars end with "-ose," as in "glucose", "dextrose", and "fructose". Sometimes such words may also refer to any types of carbohydrates soluble in water. The acyclic mono- and disaccharides contain either aldehyde groups or ketone groups. These carbon-oxygen 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 glycosidic bonds with the resultant loss of a molecule of water (H2O) per bond.[84]
Monosaccharides in a closed-chain form can form glycosidic bonds with other monosaccharides, creating disaccharides (such as sucrose) and polysaccharides (such as starch). Enzymes must hydrolyze or otherwise break these glycosidic bonds before such compounds become metabolized. After digestion and absorption the principal monosaccharides present in the blood and internal tissues include glucose, fructose, and galactose. Many pentoses and hexoses 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.[84]
Biopolymers of sugars are common in nature. Through photosynthesis plants produce glucose, which has the formula C6H12O6, and convert it for storage as an energy reserve in the form of other carbohydrates such as starch, or (as in cane and beet) as sucrose, with the chemical formula C12H22O11. Starch, consisting of two different polymers of glucose, is a readily degradable form of chemical energy stored by cells, and can be converted to other types of energy.[84] 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 only digest cellulose to a very limited extent though ruminants can do so with the help of symbiotic bacteria in their gut.[85] DNA and RNA are built up of the monosaccharides deoxyribose and ribose respectively. Deoxyribose has the formula C5H10O4 and ribose the formula C5H10O5.[86]
| Wikimedia Commons has media related to: Sugars |
|
|||||||||||||||||||||||||||||||||||||||||||||||||||
This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)
Dansk (Danish)
n. - sukker, penge, LSD
v. tr. - indsukre, søde, komme sukker i
v. intr. - lave sukker, gøre velsmagende
idioms:
Nederlands (Dutch)
suiker, suikeren, verzoeten
Français (French)
n. - (Culin) sucre, chéri
v. tr. - sucrer, enrober de sucre, rendre plus appétissant
v. intr. - former du sucre, granuler
idioms:
Deutsch (German)
n. - Zucker
v. - zuckern, versüßen
idioms:
Ελληνική (Greek)
n. - ζάχαρη, (χημ.) σάκχαρο, (μτφ.) γλύκα, γλυκόλογα, κολακείες, (αργκό) ηρωίνη ή ελ-ες-ντι
v. - γλυκαίνω, (μαγειρ.) ζαχαρώνω, γκλασάρω
idioms:
Italiano (Italian)
zuccherare, zucchero
idioms:
Português (Portuguese)
n. - açúcar (m)
v. - açucarar
idioms:
Русский (Russian)
сахар, лесть, милочка, обсахаривать, подслащивать, выпаривать сахар, засахариваться
idioms:
Español (Spanish)
n. - azúcar
v. tr. - azucarar, endulzar, confitar
v. intr. - cristalizarse, granularse, formar una capa de azúcar
idioms:
Svenska (Swedish)
n. - socker, sockerbit, smicker, sötnos, pengar (sl.)
v. - sockra, söta
中文(简体)(Chinese (Simplified))
糖, 甜言蜜语, 糖块, 加糖于, 粉饰, 使甜蜜, 制成糖
idioms:
中文(繁體)(Chinese (Traditional))
n. - 糖, 甜言蜜語, 糖塊
v. tr. - 加糖於, 粉飾, 使甜蜜
v. intr. - 製成糖
idioms:
한국어 (Korean)
n. - 설탕, 겉치레 말, 감언
v. tr. - 설탕을 치다, 비위 맞추다, 매수하다
v. intr. - 제기랄!, 빌어먹을
日本語 (Japanese)
n. - 砂糖, 糖, あなた
v. - 砂糖をかける, 糖衣で包む, よく見せる
idioms:
العربيه (Arabic)
(الاسم) سكر (فعل) يحلي بالسكر
עברית (Hebrew)
n. - סוכר, מותק
v. tr. - הוסיף סוכר, המתיק, ריכך את מילותיו
v. intr. - ייצר סוכר או גבישי סוכר
If you are unable to view some languages clearly, click here.