to conduct quantitative food tests on reducing sugars

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Last updated 2:49 PM on 10/11/26
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9 Terms

1
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independent variable

reducing sugar concentration

2
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dependent variable

colour of each solution

3
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control

water

4
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substrate

glucose solution

5
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chemical used

benedicts reagent

6
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procedure

  1. prepare glucose stock solution

  2. preform serial dilution (each concentration will be 1/10th of the previous one)

  3. prepare control (water only)

  4. add benedicts reagent to each test tube
    place each test tube in a beaker of water, heat but do not boil

  5. observe colour change


7
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equipment

7 test tubes
test tube rack
dropper

8
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materials

glucose solution
deionised water
benedicts reagent

9
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results

nil-blue, <500-blue green, 500-1000-green, 1000-1500-yellow, 1500-2000-orange, >2000-brick red