Food tests

• Glucose test:

  Use Benedict’s reagent into a test tube

  Place in a hot water bath for 5 minutes

  Take out and place in a test tube rack

  If glucose is present, it should turn brick red
• Starch test:

  Use iodine solution into a test tube

  If starch is present, the food will turn blue/black
• Protein test:

  Use biuret’s reagent into a test tube

  If protein is present, the food will turn lilac
• Lipids (fats) test:

  Use ethanol solution in a test tube

  Shake gently

  Leave for a minute

  If lipids are present, the solution will be cloudy white