Proteins

• what is the test for soluble proteins called

  • the biuret test
• describe the biuret test

  • add a few drops of biuret reagent to a protein solution
  • gently shake
  • solution turns from light blue -> purple colour
• what happens if the sample contains no protein

  • blue biuret reagent stays blue
  • no colour change observed
• is heating required for the biuret test

  no