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Monosaccharides and Disaccharides The elements which make up carbohydrates are: Carbon(C) Hydrogen(H) Oxygen(O)

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Presentation on theme: "Monosaccharides and Disaccharides The elements which make up carbohydrates are: Carbon(C) Hydrogen(H) Oxygen(O)"— Presentation transcript:

1

2 Monosaccharides and Disaccharides

3 The elements which make up carbohydrates are: Carbon(C) Hydrogen(H) Oxygen(O)

4 Monosaccharides -Single Sugar- These are the basic building blocks of other carbohydrates of which are the reducing sugars: Glucose Fructose The Formula for glucose is C 6 H 12 O 6 Monosaccharides are: Sweet tasting Soluble in water Reducing sugars

5 Disaccharides -Double Sugars- Disaccharides are formed by CONDENSATION REACTION of 2 Monosaccharides, the bond is called a glycosidic bond. Sucrose Maltose May be non-reducing Sweet tasting Water soluble

6 Condensation Reactions The chemical reaction that links monosaccharides together to produce polymers (disaccharides etc) is called a CONDENSATION REACTION. Examples include: 2 glucose molecules to form maltose A glucose and a fructose to form sucrose

7 2 Glucose to form Maltose + Condensation Hydrolysis H2OH2O

8 A Glucose and a Fructose to form Sucrose + CondensationHydrolysis H2OH2O

9 Summary So… CLASSIFICATION: The basic sugar unit = the saccharide 1 sugar unit = Monosaccaride 2 sugar units = Disaccharide Examples of Monosaccharides: Glucose, Fructose Examples of Disaccharides: Maltose, Sucrose These are formed by CONDENSATION REACTIONS To reverse the reaction it is called HYDROLYSIS


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