Food Tests

Biochemistry - Testing for foods

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Starch test

Starch

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starch Description

  • Add Iodine Solution
  • Brown to blue black colour change
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Lipid

Lipids

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lipid description

  • Add Ethanol to dissolved lipid
  • pour into water in 2nd test tube
  • White emulsion forms near top
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Protein

Protein

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Protein Description

  • Add Biuret reagent
  • Blue To Lilac Colour change
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Reducing sugar

Reducing sugar

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Reducing sugar description

  • Add Benedicts solution
  • Heat to 80°C
  • Blue to Orange-Red
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Non Reducing sugar

Non-Reducing Sugar

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Non-Reducing sugar description

  • if reucing sugar test is negative
  • boil with HCL
  • and add Na2CO3
  • Repeat bendicts test
  • Add benedicts solution
  • Heat to 80°C
  • Blue to orange red (on 2nd test)
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Comments

muhammed-ali

short and sweet

Abigail

Thanks very much for this =D

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