Question:
The controlled atmosphere helps to alleviate
The controlled atmosphere helps to alleviate
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Remember apple CA storage conditions:
- O2: 1-3%
- CO2: 5-10%
- Temperature: 0-1°C
- Helps prevent: Brown heart, scald, and other disorders
- CA is used for: Apples, pears, kiwifruit, and other temperate fruits
- O2: 1-3%
- CO2: 5-10%
- Temperature: 0-1°C
- Helps prevent: Brown heart, scald, and other disorders
- CA is used for: Apples, pears, kiwifruit, and other temperate fruits
Updated On: Aug 19, 2026
- Russet spotting in lettuce
- Black heart of potato
- Brown stain in lettuce
- Brown heart of apple
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
This question tests knowledge of controlled atmosphere (CA) storage and its effects on fruit quality.
Step 2: Detailed Explanation:
Controlled Atmosphere (CA) storage is used to manage physiological disorders.
Brown heart of apple is alleviated by CA storage.
It is a physiological disorder caused by:
- High CO2 concentration.
- Low O2 concentration in storage.
CA storage (5-10% CO2, 1-3% O2) prevents this disorder.
Other disorders:
- Russet spotting in lettuce (A): Caused by ethylene; CA helps but not a primary application.
- Black heart of potato (B): Caused by O2 deficiency; CA is not a treatment.
- Brown stain in lettuce (C): Caused by CO2 injury; CA can exacerbate it.
Thus, CA storage is primarily used to alleviate brown heart in apples.
Step 3: Final Answer:
Thus, controlled atmosphere helps to alleviate brown heart of apple, which corresponds to option (D).
[0.5cm]
This question tests knowledge of controlled atmosphere (CA) storage and its effects on fruit quality.
Step 2: Detailed Explanation:
Controlled Atmosphere (CA) storage is used to manage physiological disorders.
Brown heart of apple is alleviated by CA storage.
It is a physiological disorder caused by:
- High CO2 concentration.
- Low O2 concentration in storage.
CA storage (5-10% CO2, 1-3% O2) prevents this disorder.
Other disorders:
- Russet spotting in lettuce (A): Caused by ethylene; CA helps but not a primary application.
- Black heart of potato (B): Caused by O2 deficiency; CA is not a treatment.
- Brown stain in lettuce (C): Caused by CO2 injury; CA can exacerbate it.
Thus, CA storage is primarily used to alleviate brown heart in apples.
Step 3: Final Answer:
Thus, controlled atmosphere helps to alleviate brown heart of apple, which corresponds to option (D).
[0.5cm]
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