Fruits stored in a cold chamber exhibit longer storage life because

[UPSC Civil Services Exam – 2013 Prelims]

(a) exposure to sunlight is prevented

(b) concentration of carbon dioxide in the environment is increased

(c) rate of respiration is decreased

(d) there is an increase in humidity

Answer: (c)        

Explanation:

• By placing fruits and vegetables in cold storage, their shelf life can be extended as it slows down the ripening process and keeps them fresh for a longer period.
• This is because the respiration rate of fruits decreases in a cold environment, which reduces the amount of ethylene gas they release.
• Ethylene is commonly referred to as the “fruit-ripening hormone,” and its production varies depending on the type of fruit.
• When fruits are kept in cold storage, the rate of ethylene production decreases, leading to an increase in their overall shelf life.