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Question: BIOCHEMISTRY TESTS for FOOD MACROMOLECULES Carbohydrate Benedict Simplodine Complox BiurtProtein sugar sugar ellow- Black wnito purple Purple Blue Blue Rod Water Blue Orange Reset Table Check PROGRESS: 72% chemistry test result o. BSTER

Biochemistry Test

Transcribed text From Image: BIOCHEMISTRY TESTS for FOOD MACROMOLECULES Carbohydrate Benedict Simplodine Complox BiurtProtein sugar sugar ellow- Black wnito purple Purple Blue Blue Rod Water Blue Orange Reset Table Check PROGRESS: 72% chemistry test result o. BSTER

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Answer:

Benedict’s test

  • For simple/reducing sugar
  • Positive result – colour change to green, orange or red
  • Negative – blue (no change)

Iodine test

  • For complex carbohydrates like starch
  • Positive – brown/black colour
  • Negative – yellow/orange (no change)
  • In testing of milk the colour is white because of the colour of milk and it doesn’t turn to brown/black, indicating that it doesn’t contain starch.

Biuret test

  • Test for presence of peptide bone (or protein)
  • Positive – boiler colour
  • Negative – Blue (no change)

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