Food Tests T2

• What does Benedict test, test for?


  Glucose/ Reducing Sugars
• What colour does Benedicts test turn if Reducing sugars are present?


  From Blue to yellow, Green or Red
• What must you do for benedicts test that you don't need to do more other tests?


  Water bath test tube at 75
• What Tests for Starch?

  Iodine
• What colour does Iodine turn in the presence of starch?


  From Orange/Brown to Blue/Black
• What test, tests for protein?

  The Biuret Test
• What colour does Biuret change when in Prescence of Proteins?


  From blue to purple

  Stays blue if there is no protein
• What tests for Fats and Lipids?


  Ethanol/Sudan 111
• What changes when ethanol is in Prescence of fats/ lipids?


  Changes to cloudy/Milky
• What changes for sudan 111 in presence of Fats/ Lipids?


  Splits into two layers, top is brick red.

  Sudan 11 dyes proteins