This set of Food Packaging Technology Multiple Choice Questions & Answers (MCQs) focuses on “Edible, Biobased and Biodegradable Food Packaging Materials”.
1. Which amongst the following is not a food grade polymer?
a) Ethylene Propylene Diene monomer
b) Polyurethane
c) Polyvinyl Chloride
d) Viton
View Answer
Explanation: Polyvinyl Chloride (PVC) is not a food grade polymer. It is toxic in nature. A polymer is a labeled food grade when it is inert and doesn’t react with food in a harmful manner. Ethylene propylene diene monomer, polyurethane and viton are food grade polymers.
2. Traditional packaging is more sustainable than edible packaging.
a) True
b) False
View Answer
Explanation: Edible packaging material is more sustainable than traditional packaging material. It is because of its biodegradable property. Traditional packaging material leaves residues on degrading, whereas edible packaging does not. Therefore, making it more sustainable and suitable for the environment.
3. Which of the following is not a mechanism of film formation in edible coating?
a) Simple co-acervation
b) Complex co-acervation
c) Polymerisation
d) Gelation
View Answer
Explanation: Polymerisation is not a mechanism of film formation in edible coating. Simple co-acervation, compound co-acervation and gelation are mechanisms of film formation in edible coating. Polymerisation is a phenomenon when monomers combine together to form a polymer. Film formation mechanisms are those which tell about the interaction of film and the substrate.
4. ____________ and ___________ are used to make edible packaging material.
a) Minerals and vitamins
b) Proteins and vitamins
c) Water and proteins
d) Proteins and carbohydrates
View Answer
Explanation: Proteins and carbohydrates are used to make edible packaging material. The protein based material includes-gluten, zein, soy,etc. Carbohydrates based material includes-chitosan, cellulose, dextrin, pectin,etc.
5. _________ is a protein based material for edible coating.
a) Chitosan
b) Acylglycerol
c) Collagen
d) Alginate
View Answer
Explanation: Collagen is a protein based material for edible coating. Chitosan and alginate are polymer based material for edible coating. Acylglycerol is a lipid based material for edible coating.
6. Complex co-acervation includes addition of hydrosoluble non-electrolyte.
a) True
b) False
View Answer
Explanation: Simple co-acervation includes addition of hydrosoluble non-electrolyte. Complex co-acervation is simple precipitation of polymer complex, when two hydrocolloids of opposite charges are mixed.
7. Gelation is a ________ of formation of edible coating.
a) Consequence
b) Mechanism
c) Result
d) Prerequisite
View Answer
Explanation: Gelation is a mechanism of formation of edible coating. Gelation is a process when the heating of polymers leads to its denaturation, followed by gelation or coagulation on cooling. Gelation is also known as thermal coagulation.
8. Edible packaging has comparable water vapor transmission rates.
a) True
b) False
View Answer
Explanation: Biobased polymers are generally hydrophilic in nature. So are many traditional polymers like nylon, ethylvinyl alcohol, etc. Permeability may increase when humidity increases in both cases. Hence, we can say that edible packaging has comparable water vapor transmission rates.
9. Cohesive forces between ___________ is a principal of film formation.
a) Inner membrane and cell wall
b) Film and substrate
c) Endocarp and mesocarp
d) Polymer molecules
View Answer
Explanation: Cohesive forces between polymer molecules are a principle of film formation. It is responsible for the barrier properties of the film. It helps in decreasing the permeability and hence transmission rates of gases and water respectively.
10. Adhesive forces between _______________ is a principal of film formation.
a) Polymer molecules
b) Inner membrane and cell wall
c) Film and substrate
d) Endocarp and mesocarp
View Answer
Explanation: Adhesive forces between film and substrate are a principle of film formation. It is responsible for keeping the film intact. This forms an edible film, which can be consumed along with the food.
11. Which of the following properties make edible/biodegradable packaging material better than the traditional packaging material?
a) Compostability
b) Water vapor transmission rate
c) Oxygen transmission rate
d) Thermal properties
View Answer
Explanation: Compostability makes edible/biodegradable packaging material better than the traditional packaging material. Compostability is also known as biodegradability. It is the property when the package meets its end life, how well a material decomposes. Biodegradable packets degrades faster and better than the traditional polymers.
12. Which of the following statement is false about edible/biobased packaging material when compared to traditional packaging material?
a) Improved product flavor
b) Resistance to oxygen permeability
c) Low water vapor permeability
d) More sustainable
View Answer
Explanation: Edible / biobased packaging material has a higher water vapor permeability than traditional packaging material. However it is better than traditional packaging material since it helps improving product flavor, has a higher resistance to oxygen permeability and is more sustainable.
13. Chitosan, a polymer based material for edible coating, also has _______ properties.
a) antifungal
b) antioxidant
c) antifogging
d) thickening
View Answer
Explanation: Chitosan, a polymer based material for edible coating, also has antifungal properties. Chitosan is used as an edible coating in cucumbers and bell pepper, where its primary function is – moisture barrier.
14. What does PHB stand for?
a) Polyhydrobutyl
b) Polyhydroxybutyrate
c) Polyhydroxybutene
d) Polyhydroxybutane
View Answer
Explanation: PHB stands for Polyhydroxybutyrate. It is a polyester, popular as a food grade packaging material for snacks, dry products and etc. It is a biodegradable semi-crystalline thermoplastic material produced via fermentation of renewable carbs.
15. CEN headquarters are located in __________
a) Brussels
b) London
c) New York
d) Rome
View Answer
Explanation: CEN (European Committee for Standardisation) headquarters are located in Brussels, Belgium. It is responsible for the preparation of certain standards on compostability, in order to increase sustainability.
Sanfoundry Global Education & Learning Series – Food Packaging Technology.
To practice all areas of Food Packaging Technology, here is complete set of 1000+ Multiple Choice Questions and Answers.
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