Food tests RPs

• What are the major nutrients required for a healthy diet?

  Carbohydrates, proteins, and lipids
• What is the role of the digestive system?

  It breaks down large food molecules for absorption
• What is a qualitative test for food chemicals?

  Tests that detect presence, not quantity
• What is the purpose of Benedict's test?

  To detect the presence of sugars
• What color change indicates the presence of reducing sugars in Benedict's test?

  Red-brown precipitate forms
• What is a reducing sugar?

  Sugars that act as reducing agents
• Which sugars are classified as reducing sugars?

  Glucose, fructose, lactose, and maltose
• What color does iodine solution turn in the presence of starch?

  Blue-black color
• What is the biuret test used for?

  To detect the presence of proteins
• What is the method for conducting the biuret test?

  Add biuret solution A and B to the sample
• What is the Sudan III test used for?

  To test for the presence of lipids
• What indicates the presence of lipids in the Sudan III test?

  The sample stains red
• What is the emulsion test used for?

  To test for the presence of lipids
• What safety precautions should be taken when using Benedict's solution?

  Wear safety goggles and avoid skin contact
• What hazards are associated with iodine solution?

  Iodine solution is an irritant
• What is the hazard associated with Sudan III solution?

  It is flammable as it is in alcohol
• What should be avoided when using ethanol in the emulsion test?

  Avoid contact with skin and eyes