food tests

• test for sugars?

  benedict's test
• test for starch?

  iodine solution
• test for proteins?


  biuret test
• test for lipids?


  Ethanol and water
• benedicts test colour change?

  blue to green, yellow or red (depending on sugar)
• iodine solution colour change?

  brown/yellow to blue/black
• biuret test colour change?

  blue to pink/purple
• Lipid change

  Cloudy for positive, clear without