单词 | carbohydrate |
释义 | carbohydrate (once / 4693 pages) n The word carbohydrate refers to a compound of carbon, hydrogen, and oxygen that is a major source of energy for animals. Carbohydrates can be found in many foods — especially in a plate of spaghetti. Often formed by a plant, a carbohydrate may be a sugar, starch, or cellulose that typically breaks down into energy within the body. So when you hydrate — or “water” — a carbon in just the right way, it can lead to the stuff that makes up bread, pasta, apples, beans, and potatoes. Carbohydrate often goes by its less threatening nickname carb, though beware: abbreviating the word does nothing to lessen its calories. WORD FAMILYcarbohydrate: carbohydrates USAGE EXAMPLESThat’s about the number of carbohydrates in one small apple. Time(Dec 28, 2016) Older women aren’t as efficient at processing carbohydrates, so they tend to store the excess as fat. Washington Post(Dec 20, 2016) Carbohydrates are causing an obesity epidemic and fats silt up your arteries. The Guardian(Dec 12, 2016) n an essential structural component of living cells and source of energy for animals; includes simple sugars with small molecules as well as macromolecular substances; are classified according to the number of monosaccharide groups they contain Syn|Hypo|Hyper saccharide, sugar ribose a pentose sugar important as a component of ribonucleic acid beet sugarsugar made from sugar beets cane sugarsucrose obtained from sugar cane deoxyribosea sugar that is a constituent of nucleic acids invert sugara mixture of equal parts of glucose and fructose resulting from the hydrolysis of sucrose; found naturally in fruits; sweeter than glucose maple sugarsugar made from the sap of the sugar maple tree monosaccharide, monosaccharose, simple sugara sugar (like sucrose or fructose) that does not hydrolyse to give other sugars; the simplest group of carbohydrates oligosaccharideany of the carbohydrates that yield only a few monosaccharide molecules on complete hydrolysis polyose, polysaccharideany of a class of carbohydrates whose molecules contain chains of monosaccharide molecules jaggary, jaggery, jaggheryunrefined brown sugar made from palm sap wood sugar, xylosea sugar extracted from wood or straw; used in foods for diabetics Lipo-Hepin, Liquaemin, heparina polysaccharide produced in basophils (especially in the lung and liver) and that inhibits the activity of thrombin in coagulation of the blood; it (trade names Lipo-Hepin and Liquaemin) is used as an anticoagulant in the treatment of thrombosis and in heart surgery trioseany monosaccharide sugar containing three atoms of carbon per molecule tetroseany monosaccharide sugar containing four atoms of carbon per molecule pentoseany monosaccharide sugar containing five atoms of carbon per molecule hexosea monosaccharide that contains six carbon atoms per molecule aldosea monosaccharide sugar that contains the aldehyde group or is hemiacetal chitina tough semitransparent horny substance; the principal component of the exoskeletons of arthropods and the cell walls of certain fungi cellulosea polysaccharide that is the chief constituent of all plant tissues and fibers animal starch, glycogenone form in which body fuel is stored; stored primarily in the liver and broken down into glucose when needed by the body inulinused to manufacture fructose and in assessing kidney function demeraraa light brown raw cane sugar from Guyana dextrinany of various polysaccharides obtained by hydrolysis of starch; a tasteless and odorless gummy substance that is used as a thickening agent and in adhesives and in dietary supplements disaccharideany of a variety of carbohydrates that yield two monosaccharide molecules on complete hydrolysis ketoseany monosaccharide sugar that contains a ketone group or its hemiacetal mucopolysaccharidecomplex polysaccharides containing an amino group; occur chiefly as components of connective tissue amylum, starcha complex carbohydrate found chiefly in seeds, fruits, tubers, roots and stem pith of plants, notably in corn, potatoes, wheat, and rice; an important foodstuff and used otherwise especially in adhesives and as fillers and stiffeners for paper and textiles tetrasaccharideany of a variety of carbohydrates that yield four monosaccharide molecules on complete hydrolysis trisaccharideany of a variety of carbohydrates that yield three monosaccharide molecules on complete hydrolysis macromolecule, supermolecule any very large complex molecule; found only in plants and animals |
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