Download GTU BE/B.Tech 2019 Winter 7th Sem New 2171404 Food Packaging Technology Question Paper

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Subject Code: 2171404

GUJARAT TECHNOLOGICAL UNIVERSITY

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BE - SEMESTER- VII (New) EXAMINATION — WINTER 2019

Subject Name: Food Packaging Technology

Time: 10:30 AM TO 01:00 PM

Date: 03/12/2019

Total Marks: 70

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Instructions:

1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks

Q1

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1. Define the following terms. (03)
   1. Cullet
   2. Food Packaging
   3. Degree of polymerization
2. State the effect of followings on the properties of packaging material. (04)
   1. Ethylene copolymer coating on BOPP

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   2. Increasing the distance between repeating polar —-CONH- groups in nylon
   3. Nitrocellulose coating on cellophane
   4. Addition of cobalt during glass manufacturing
3. List out basic types of metal plates used for food packaging. What are precautionary and technical measures to be taken while placing the order of metal cans to a manufacturer? (07)

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Q2

1. How food packaging improve sales? (03)
2. What are ideal characteristics of food packaging material? (04)
3. Derive the relationship between bulk density, true density and porosity with respect to food packaging. (07)

OR

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1. Explain the possible hazards; and suggest step by step suitable packaging material for dairy products (07)

Q3

1. Labeling is preferred over container printing under many circumstances. Justify the statement. (03)
2. Highlight on the advantages and limitations of aluminum containers. (04)
3. Food product is filled with 32% porosity in a container. In one batch the porosity was observed to be 28%. Calculate how much more or less percentage of food product was filled in each container? What are its consequences? (07)

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OR

1. Differentiate between LDPE and HDPE. (03)
2. What are components of Form Fill and Sealing machine? (04)
3. Discuss the process of paper manufacturing with the functions of each step. (07)

Q4

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1. What are functional layers in laminates used for food packaging? (03)
2. What do you understand by blister packaging? (04)
3. Explain the construction and working principle of vacuum filling system used for liquid food product with a neat and well labeled diagram. (07)

OR

1. Logistical packaging adds value. Justify the statement. (03)

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2. Briefly highlight on the properties of Glass with respect to food packaging. (04)
3. Define Half value period (HVP). Explain HVP determination of packaged food product and its application in shelf life estimation. (07)

Q.5

1. Draw a well labeled sketch of Double seam cross section in tin plate container. (03)
2. Define aseptic packaging. What are the advantages and limitations of aseptic packaging? (04)

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3. What do you understand by active packaging and intelligent packaging? Discuss types of active packaging films with its active component, mode of action and application areas. (07)

OR

1. Why nutritional labeling is mandatory in food packaging? (03)
2. Briefly explain the mechanisms for edible film formation. (04)
3. Define thermoplastic. Discuss the properties and food packaging application of EVOH, PVC and cellulose acetate. (07)

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