food tests

• what is the food test for starch?


  1. iodine test
  2. yellow-red iodine solution turns blue if starch is present, if not it turns black.
• what is the food test for sugars/glucose?


  1. benedicts test
  2. blue benedicts solution turns brick red on heating if glucose is present
• what is the food test for proteins?

  1. biurets test
  2. blue biurets reagent turns purple if a protein is present.
• what was the food test for lipids?

  1. ethanol test
  2. ethanol added to a solution gives a c loud white layer if a lipid is present.