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You are required to plan a procedure that will allow you to compare quantitatively the glucose concentrations in samples of fresh orange, lemon and grapefruit.
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| Submitted: Mon Sep 08 2003
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Coursework plan: AS Biology You are required to plan a procedure that will allow you to compare quantitatively the glucose concentrations in samples of fresh orange, lemon and grapefruit. Introduction The experiment that I am planning involves using the Food Test for Reducing Sugars. This test is simply done by mixing an equal volume of Benedict's solution to the test solution. It is then heated in a water bath for approximately two minutes. If a precipitate has formed it shows that sugars are present. I am also going to be using quantitative Benedict's solution as weighing a precipitate will give me more accurate results. The sugar that I am finding out in the three fruits is Glucose. It has the form of a Hexose C6 H12 O6. Glucose forms a ring shape known as a pyraiose. Two Isomers also occur called (? and ß). Glucose is often used as a " building block" for...
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