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Investigation into reducing sugar content of a variety of soft drinks (not diet).
Member rating: No Rating | Words: | Submitted: Mon Mar 15 2004
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Aim: Investigation into the reducing sugar content of a variety of soft drinks (not diet) Background Knowledge: Reducing sugars: Carbohydrates can be divided into two major groups known as the: * Sugars * Non-sugars The sugars can then be divided down again into: * Simple sugars * Monosaccarides * Disaccharides Reducing Sugars are all Monosaccarides. Monosaccharides contain carbon, hydrogen and oxygen and their general formula is (CHnO) n. Reducing sugars possess a free aldehyde group and include the sugars glucose, galactose, fructose and lactose (but not sucrose). Under alkaline conditions, this reactive aldehyde can reduce the Cu2+ ion in copper sulphate to the Cu+. Hydrated copper sulphate is blue whereas the insoluble copper oxide formed by reduction in alkali is red. When reducing sugars are heated with Benedict's reagent a red precipitate of copper oxide, which is insoluble, is formed. Ingredients of the soft drinks I plan to use: Orange Fanta: Ingredients: carbonated water, orange juice, sugar, corn syrup, phosphoric...
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