NTDT200 Lecture 4: Chapter 4: The Carbohydrates- Sugars, Starches and Fibers
5 Oct 2016
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Chapter 4: the carbohydrates- sugars, starches and fibers. Two carbs: glucose and its storage form glycogen. Glucose for immediate energy and convert glucose to glycogen for reserve energy. Carbs as fattening is a mistaken thinking. Disaccharides: sugars composed of pairs of monosaccharides. Polysaccharides: large molecules composed of chains of monosaccharides. Each atom can form a certain number of chemical bonds with other atoms: Have all the same numbers and kinds of atoms. 6 carbons, 12 hydrogens and 6 oxygens. Glucose is mildly sweet, galactose hardly tastes like anything and fructose is super sweet. Serves as essential energy source for all body"s activities. Same chemical formula as glucose, but the structure differs. Soft drinks, cereals and desserts- high fructose corn syrup. Occurs naturally in foods as a single sugar. Same atoms and numbers but different structure. Pairs of the three monosaccharides linked together. These carbs are put together and taken apart by condensation and hydrolysis.
