B3.3 Chemistry of Foods

• What is used for testing starch?

  Iodine
• What happens when Iodine reacts with starch?

  Turns yellow-red solution blue-black
• What solution is used for testing for sugars?

  Benedict's Solution
• What happens when Benedict's Solution reacts with sugars?

  Turns brick red when heated up
• What solution is used to test for proteins?

  Blue biuret
• What happens when blue biuret reacts with proteins?

  Turns the solution purple
• What solution is used to test for Lipids?

  Ethanol
• What happens when Ethanol reacts with Lipids?

  Creates a cloudy white layer in the solution
• Why is ethanol dangerous?

  It's highly flammable
• Why must safety glasses be worn when using Biuret Solution?

  It's a highly corrosive chemical