Food Tests

• Sugars-Benedict's Test

  Benedict's Reagent

  Sugar is present-Green (low), yellow or red (high) depending on concentration
• Starch

  Iodine solution

  Starch is present-Turn blue-black
• Proteins

  Biuret solution

  If proteins are present-turns mauve or purple
• Lipids

  Sudan III

  Lipids are present-Red-stained layer on the water surface

  Another way-Ethanol

  Lipids are present-Cloudy