The electromagnetic radiation used in food processing sterilizing agent is

Options

A. microwaves
B. UV rays
C. gamma rays
D. radio waves

Answer

To solve the question "The electromagnetic radiation used in food processing sterilizing agent is?", we need to analyze the types of electromagnetic radiation and their effects, particularly in the context of food sterilization.

### Step-by-Step Solution:

1. **Identify the Types of Electromagnetic Radiation**:
- The electromagnetic spectrum includes various types of radiation such as radio waves, microwaves, infrared, visible light, ultraviolet (UV) rays, X-rays, and gamma rays.

2. **Evaluate the Options**:
- **Microwaves**: These are commonly used for heating food but are not effective for sterilization as they do not have enough energy to kill bacteria and germs.
- **Radio Waves**: These have even lower energy than microwaves and are not suitable for sterilization purposes.

3. **Consider UV Rays**:
- UV rays are known for their germicidal properties. They have enough energy to damage the DNA of microorganisms, making them effective in killing germs. UV radiation is widely used in water purification systems and food processing for sterilization.

4. **Examine Gamma Rays**:
- Gamma rays have very high energy and can kill germs effectively. However, they can also damage the food itself, altering its nutritional value and safety. Therefore, while gamma rays can sterilize, they are not typically used in food processing due to their potential harmful effects on food.

5. **Conclusion**:
- Based on the analysis, the most suitable electromagnetic radiation for food processing sterilization is **Ultraviolet (UV) rays**. They effectively kill germs without the damaging effects associated with gamma rays.

### Final Answer:
The electromagnetic radiation used in food processing sterilizing agent is **Ultraviolet (UV) rays**.

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