Food packaging

Attempt the following questions to check your understanding of the subject:

PART 1
  1. Discuss the functions of food packaging (10 mks)
  2. Differentiate between Glassine, polyethelene, Polypropylenes and Polyethylene terephthalate as packaging materials (8 mks)
  3. State three gases used in Modified Atmospheric Packaging, their advantages and examples of foods that can be packed using these gases (6 mks)
  4. Explain the following (6 mks)
    1. Active packaging
    2. Intelligent packaging
    3. Aseptic packaging
  5. How do packaging material enhance traceability of foods? (2 mks)
  6. Explain the differences between high-density polyethylene (HDPE) and low-density polyethylene (LDPE) (10 mks)
  7. How do packaging materials affect the keeping quality of food? (6 mks)
  8. Briefly discuss the features of plastics, glass and metals that make them ideal in food packaging (6 mks)
  9. Discuss methods available for managing wastes from food packaging materials (6 mks)

 

PART 2
  1. Explain the following terms related to food packaging (3 mks)
    1. Hermetic seal
    2. Shatter Resistance
    3. Metallized films
  2. State two gases used in Modified Atmospheric Packaging, their advantages and examples of foods that can be packed using these gases (6 mks)
  3. Write short notes on the following (6 mks)
    1. Intelligent packaging
    2. Active packaging
    3. Aseptic packaging
  4. How do packaging material enhance Traceability of foods? (2 mks)
  5. State and explain three different packaging environments (3 mks)
  6. Explain the three categories of packaging materials (3 mks)
  7. Briefly explain the following different types of packaging materials, in terms of their properties and strengths, using examples to substantiate your answer: (6 mks)
    1. Polypropylenes
    2. Glassine
    3. Polyethylene terephthalate
  8. Briefly discuss the following types of cans and explain what they are most commonly used for (2 mks)
    1. 3 piece cans
    2. 2 piece cans
  9. Explain the difference between thermoplastics and thermoset plastics (2 mks)