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Advanced Food Processing

Instructions:

Answer 33 questions in 15 minutes.
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Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. Food treated with ionizing radiation (IR) is said to be
irradiated
5 KGY
true
True

2. Determines how far the MWs penetrate into the food and it is affected by the above two parameters plus others
100 KGY dose
5 Years
First mechanisms by which IR achieves biological stability in food
Penetration Depth

3. The quantity of radiation that results in the absorption of 100 ergs per gram of food
gamma rays
When issued - approval includes
Dielectric Constant
Radiation Absorbed Dose (RAD)

4. Direct Effect- a bullet-like effect with high energy particles impacting the vital parts of the cell
Dielectric Constant
First mechanisms by which IR achieves biological stability in food
Radio waves
Cobalt 59

5. Indirect Effect- ionization of molecules that produces ion pairs (by knocking off an electron) and free radicals (by breaking bonds) result in chemical reactions that interrupt biological functions
Penetration Depth
Second mechanisms by which IR achieves biological stability in food
2-5 KGY
gamma rays

6. 1000 GY
1 KGY
Chemical and physical
The Electromagnetic Spectrum (EMS)
0.2-5 KGY

7. Is also used in limited extent in food irradiation.
Cesium 137
Penetration Depth
Dielectric Loss
2-5 KGY

8. Dose required to kill yeast and mold?
1 KGY
5 KGY
Radiation Absorbed Dose (RAD)
Cobalt 60

9. What kind of rays does Cobalt 60 emit?
Microwaves
UV in the range of 200-280 nm
gamma rays
Penetration Depth

10. Traditional unit of measuring the amount of energy absorbed by food
Radiation Absorbed Dose (RAD)
1 KGY
0.12 KGY
100 KGY dose

11. Dose required to kill insects?
0.12 KGY
0.005 KGY
Radiation Absorbed Dose (RAD)
true

12. -the more complex the biological system is the less amount of IR required to induce changes
True
Food Irradiation
5 KGY
UV in the range of 200-280 nm

13. Made into an unstable isotope by neutron bombardment
Cobalt 59
1 GY
Chemical and physical
Gamma rays

14. Utilizing (IR) to achieve biological stability of food by inhibiting or minimizing spoilage reactions
1 KGY
Penetration Depth
1 GY
Food Irradiation

15. The common source of energy in food irradiation
100 KGY dose
Dielectric Loss
Cobalt 60
Chemical and physical

16. What changes take place when energy is applied?
gamma rays
Radiation Absorbed Dose (RAD)
Cobalt 59
Chemical and physical

17. Describes a continuous range of radiation energy having an electric and a magnetic component
0.1-1 KGY)
The Electromagnetic Spectrum (EMS)
Dielectric Loss
UV in the range of 200-280 nm

18. What is the half life of Cobalt 60?
0.2-5 KGY
5 Years
1 KGY
Chemical and physical

19. Dose required to kill a man
0.12 KGY
Radio waves
True
0.005 KGY

20. Which waves vary in frequency and are closer to Radio waves frequencies
0.1-1 KGY)
Microwaves
Radio waves
1 KGY

21. Dose required to kill bacterial spores?
1 KGY
Cesium 137
irradiated
50 KGY

22. These rays have no penetration depth hence it will only achieve surface inactivation of microorganisms
Cesium 137
0.2-5 KGY
1 GY
UV in the range of 200-280 nm

23. Killing insects and eggs
0.2-5 KGY
Cobalt 59
UV in the range of 200-280 nm
Cobalt 60

24. Pasteurization of herbs and spices
0.2-5 KGY
First mechanisms by which IR achieves biological stability in food
2-5 KGY
Cobalt 60

25. Determines the affinity of a food system to absorb microwaves
Radiation Absorbed Dose (RAD)
Dielectric Constant
gamma rays
When issued - approval includes

26. Gamma rays have high penetration capability
5 KGY
Radiation Absorbed Dose (RAD)
true
UV in the range of 200-280 nm

27. Low frequency & long wave length
0.1-1 KGY)
When issued - approval includes
Radio waves
5 KGY

28. Determines the amount of heat generated from the absorbed energy
Microwaves
Dielectric Loss
2-5 KGY
5 Years

29. Sprouting inhibition and
irradiated
0.1-1 KGY)
True
Radiation Absorbed Dose (RAD)

30. Dose required to kill virus?
1 KGY
When issued - approval includes
100 KGY dose
Cobalt 59

31. The food category - the purpose of irradiation - and the dose permitted in KGY
Cobalt 60
First mechanisms by which IR achieves biological stability in food
Penetration Depth
When issued - approval includes

32. 100 RAD
1 KGY
0.1-1 KGY)
1 GY
Chemical and physical

33. High frequency & short wave length
1 GY
Cesium 137
The Electromagnetic Spectrum (EMS)
Gamma rays