Question:
Given below are the plastic packaging materials used in the food industry.
(A). Polyethylene naphthalate
(B). Ethylene Vinyl Alcohol
(C). Nylon MXD6
(D). Ethylene Vinyl Acetate
Choose the correct plastic material that is/are used as oxygen barrier materials from the options given below:
Given below are the plastic packaging materials used in the food industry.
(A). Polyethylene naphthalate
(B). Ethylene Vinyl Alcohol
(C). Nylon MXD6
(D). Ethylene Vinyl Acetate
Choose the correct plastic material that is/are used as oxygen barrier materials from the options given below:
(A). Polyethylene naphthalate
(B). Ethylene Vinyl Alcohol
(C). Nylon MXD6
(D). Ethylene Vinyl Acetate
Choose the correct plastic material that is/are used as oxygen barrier materials from the options given below:
Show Hint
EVOH and polyamides (like Nylon MXD6) are the gold standards for oxygen barriers in food packaging. They are typically co-extruded as a thin middle layer within flexible packaging structures.
Updated On: Jul 23, 2026
- (A), and (D) only
- (B) only
- (C) only
- (A), (B), and (C) only
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
Gas barrier properties are essential in food packaging to protect products from oxygen ingress, which can cause lipid oxidation, vitamin loss, and microbial spoilage.
Different polymers are selected based on their resistance to gas permeation.
Step 2: Detailed Explanation:
Let us analyze the oxygen barrier properties of the listed plastics:
- Polyethylene naphthalate (PEN, A): This polyester has a highly rigid molecular structure that provides excellent barrier properties, with an oxygen permeability that is 4 to 5 times lower than that of standard PET. Thus, (A) is a barrier material.
- Ethylene Vinyl Alcohol (EVOH, B): This copolymer is one of the most widely used oxygen barrier materials in food packaging due to its high crystalline structure, providing an exceptional barrier against oxygen under dry conditions. Thus, (B) is a barrier material.
- Nylon MXD6 (C): This semi-crystalline aromatic polyamide provides a superb barrier against oxygen and carbon dioxide, and is frequently used in multi-layer structures. Thus, (C) is a barrier material.
- Ethylene Vinyl Acetate (EVA, D): This copolymer is flexible and is used primarily as a low-temperature heat-sealing layer. It has poor barrier properties to gases. Thus, (D) is not a gas barrier material.
Therefore, materials (A), (B), and (C) are used as oxygen barrier materials.
Step 3: Final Answer:
The plastic materials used as oxygen barriers are (A), (B), and (C) only. Hence, the correct option is (D).
Gas barrier properties are essential in food packaging to protect products from oxygen ingress, which can cause lipid oxidation, vitamin loss, and microbial spoilage.
Different polymers are selected based on their resistance to gas permeation.
Step 2: Detailed Explanation:
Let us analyze the oxygen barrier properties of the listed plastics:
- Polyethylene naphthalate (PEN, A): This polyester has a highly rigid molecular structure that provides excellent barrier properties, with an oxygen permeability that is 4 to 5 times lower than that of standard PET. Thus, (A) is a barrier material.
- Ethylene Vinyl Alcohol (EVOH, B): This copolymer is one of the most widely used oxygen barrier materials in food packaging due to its high crystalline structure, providing an exceptional barrier against oxygen under dry conditions. Thus, (B) is a barrier material.
- Nylon MXD6 (C): This semi-crystalline aromatic polyamide provides a superb barrier against oxygen and carbon dioxide, and is frequently used in multi-layer structures. Thus, (C) is a barrier material.
- Ethylene Vinyl Acetate (EVA, D): This copolymer is flexible and is used primarily as a low-temperature heat-sealing layer. It has poor barrier properties to gases. Thus, (D) is not a gas barrier material.
Therefore, materials (A), (B), and (C) are used as oxygen barrier materials.
Step 3: Final Answer:
The plastic materials used as oxygen barriers are (A), (B), and (C) only. Hence, the correct option is (D).
Was this answer helpful?
0
0
Top ICAR AIEEA Dairy Technology Questions
- As per legal standards (FSSR, 2011), the acidity (%LA) of chakka should not be more than:
- Which of the following food additive is permitted as preservative in paneer?
- Given below are four statements:
Statement (I) : Homogenisation breaks down fat globules in milk into smaller entities.
Statement (II) : Homogenisation breaks down fat globules and casein micelles in milk into smaller entities.
Statement (III) : Homogenisation slightly increases viscosity of milk.
Statement (IV) : Homogenisation improves the appearance of milk.
In light of the above statements, choose the most appropriate answer from the options given below. - With regard to temperature of operation, place the following unit operations in sequence in an increasing order of temperature:
(i) Sterilisation
(ii) Thermisation
(iii) Homogenisation
(iv) Bactofugation and
(v) HTST pasteurization.
Choose the correct answer from the options given below : - “Narampak” and “karapak” refer to varieties of sandesh with reference to which of the following parameters ?
View More Questions
Top ICAR AIEEA Food Safety Questions
- Which of the following is not used as sterilants for membranes ?
- Which of the following is the system that relies on process controls to minimize food safety risks in the dairy processing industry?
- Which of the following is a correct abbreviation for SCADA?
- Which of the following is a correct abbreviation for OPRP?
- Which of the following packaging forms is referred to as "3D packaging and food service article that is manufactured from an aqueous slurry of cellulosic fibres and formed into discrete products on screened moulds"?
View More Questions
Top ICAR AIEEA Questions
- Which of the following statements is false?
- Which of the following is an example of an inventory?
- According to Adam Smith, productivity gains could be brought about through .
- The supply curve for an artificially scarce good is .
- Which of the following would not be considered an opportunity cost of paid employment?
View More Questions