Testing for lipids

• What should you do with the food before testing?

  Grind up the food using a pestle and mortar
• What safety precautions should be taken during the experiment?

  • Wear safety goggles
  • Use gloves when handling chemicals
  • Wash off spills immediately
• What type of solution is used to test for lipids?

  Sudan III solution
• What happens if lipids are present in the solution?

  A red-stained layer will form on top
• What are the key steps in testing for lipids?

  1. Grind food and mix with distilled water
  2. Filter the mixture
  3. Add Sudan III solution
  4. Observe for a red-stained layer
  5. Record results