Topics:
Animal Refresher, Meat Science
Source of Gamma Radiation for Food Irradiation
Gamma radiations are emitted mainly from:
- Co⁶⁰ & Cs¹³⁷ — Correct Answer
- I¹³¹
- Both Co⁶⁰ & I¹³¹
- None of the above
Explanation:
Correct Answer: Co⁶⁰ & Cs¹³⁷
Gamma rays used in food irradiation are emitted mainly from two isotopes: Cobalt-60 (Co⁶⁰) and Caesium-137 (Cs¹³⁷).
Key Points
- Co⁶⁰ is the most commonly used isotope in commercial food irradiation facilities.
- Cs¹³⁷ is also an approved source for food irradiation.
- I¹³¹ (Iodine-131) is a radioactive isotope used in medicine (thyroid treatment), not in food irradiation.
Why Gamma Rays Are Preferred
- High penetrating power — can irradiate pre-packaged food.
- No residual radioactivity is induced in the food.
- Cost-effective compared to electron beams and X-rays.
📚 About this Topic — Animal Refresher
This multiple choice question is from Animal Refresher, Meat Science. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Refresher to strengthen your preparation.
