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Turkey - Wednesday 22 November 2006 Lets Talk Turkey Sugar...

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Wednesday 22 November 2006
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Let’s Talk Turkey
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Protein FAT Sugar FAT Starch FAT Carbohydrates Starch FAT Sugar
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4 Biological Systems (eg. life) encompass several different classes of molecules Carbohydrates / Sugars Fats / Lipids Amino Acids / Proteins Heterocyclic Bases (DNA) Biomolecules
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5 Carbohydrates - Chapter 25 Carbohydrates - or Sugars are highly oxygenated organic molecules. They usually contain as many oxygens as carbon atoms. Key intermediates for Metabolism Polysaccharides are structural components of plants (cellulose)
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6 Sugar Structure Glucose OH H H HO OH H OH H CH 2 OH O H HO H HO H H OH H OH OH O H
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7 Polysaccharides Sugars can be linked by the acetal group A disaccharide Cellulose contains several thousand sugar units O H HO H HO H H OH H OH O H O H HO H H OH H OH OH
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8 Disaccharides Maltose - (glucose-glucose) O HO HO OH OH O O HO OH OH OH
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9 Disaccharides Cellobiose - cannot digest this O HO HO OH OH O O HO OH OH OH O HO HO OH OH O O HO OH OH OH Maltose Cellobiose
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10 Disaccharides Lactose - (galactose-glucose) O HO HO OH OH O O HO OH OH OH Lactose
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11 Disaccharides Sucrose - Table Sugar - (glucose-fructose) O HO HO OH OH Sucrose O HO OH O OH OH
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12 Non-caloric sweeteners Sucralose O Cl HO OH OH Sucralose O HO OH O Cl Cl O HO HO OH OH Sucrose O HO OH O OH OH
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13 Polysaccharides Cellulose Main structural component of green plants.
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