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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.
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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. Low frequency & long wave length
Radio waves
Radiation Absorbed Dose (RAD)
0.12 KGY
50 KGY

2. Which waves vary in frequency and are closer to Radio waves frequencies
Microwaves
Cesium 137
100 KGY dose
50 KGY

3. The quantity of radiation that results in the absorption of 100 ergs per gram of food
Gamma rays
Penetration Depth
UV in the range of 200-280 nm
Radiation Absorbed Dose (RAD)

4. Traditional unit of measuring the amount of energy absorbed by food
Food Irradiation
5 KGY
Radiation Absorbed Dose (RAD)
True

5. Determines the affinity of a food system to absorb microwaves
Cobalt 60
Cesium 137
Microwaves
Dielectric Constant

6. Dose required to kill bacterial spores?
50 KGY
The Electromagnetic Spectrum (EMS)
Second mechanisms by which IR achieves biological stability in food
1 GY

7. Dose required to kill virus?
100 KGY dose
True
Radiation Absorbed Dose (RAD)
1 GY

8. 100 RAD
True
UV in the range of 200-280 nm
1 GY
irradiated

9. Dose required to kill insects?
irradiated
Cobalt 59
100 KGY dose
0.12 KGY

10. These rays have no penetration depth hence it will only achieve surface inactivation of microorganisms
Second mechanisms by which IR achieves biological stability in food
100 KGY dose
Dielectric Loss
UV in the range of 200-280 nm

11. Dose required to kill yeast and mold?
5 KGY
First mechanisms by which IR achieves biological stability in food
The Electromagnetic Spectrum (EMS)
Cesium 137

12. The food category - the purpose of irradiation - and the dose permitted in KGY
5 KGY
Cesium 137
Dielectric Constant
When issued - approval includes

13. High frequency & short wave length
Chemical and physical
Cesium 137
2-5 KGY
Gamma rays

14. Pasteurization of herbs and spices
Dielectric Loss
Second mechanisms by which IR achieves biological stability in food
2-5 KGY
true

15. Killing insects and eggs
0.2-5 KGY
0.1-1 KGY)
Food Irradiation
0.12 KGY

16. Is also used in limited extent in food irradiation.
100 KGY dose
Cobalt 60
Cesium 137
Radiation Absorbed Dose (RAD)

17. What is the half life of Cobalt 60?
5 Years
Radio waves
Cobalt 59
Dielectric Loss

18. What kind of rays does Cobalt 60 emit?
gamma rays
irradiated
When issued - approval includes
Chemical and physical

19. Direct Effect- a bullet-like effect with high energy particles impacting the vital parts of the cell
5 Years
Gamma rays
First mechanisms by which IR achieves biological stability in food
True

20. Utilizing (IR) to achieve biological stability of food by inhibiting or minimizing spoilage reactions
Food Irradiation
5 Years
Cobalt 60
Dielectric Loss

21. What changes take place when energy is applied?
Chemical and physical
Microwaves
2-5 KGY
Gamma rays

22. Made into an unstable isotope by neutron bombardment
Cesium 137
Radio waves
5 KGY
Cobalt 59

23. Determines the amount of heat generated from the absorbed energy
0.12 KGY
5 Years
100 KGY dose
Dielectric Loss

24. Dose required to kill a man
5 Years
2-5 KGY
1 KGY
0.005 KGY

25. Determines how far the MWs penetrate into the food and it is affected by the above two parameters plus others
Penetration Depth
irradiated
0.2-5 KGY
Dielectric Loss

26. 1000 GY
Radiation Absorbed Dose (RAD)
1 KGY
Second mechanisms by which IR achieves biological stability in food
Dielectric Loss

27. Describes a continuous range of radiation energy having an electric and a magnetic component
Cobalt 59
The Electromagnetic Spectrum (EMS)
Dielectric Constant
Chemical and physical

28. Food treated with ionizing radiation (IR) is said to be
Radiation Absorbed Dose (RAD)
When issued - approval includes
irradiated
true

29. The common source of energy in food irradiation
The Electromagnetic Spectrum (EMS)
Cobalt 60
50 KGY
Microwaves

30. 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
5 Years
Cobalt 59
Cesium 137
Second mechanisms by which IR achieves biological stability in food

31. Sprouting inhibition and
0.2-5 KGY
Chemical and physical
Cobalt 59
0.1-1 KGY)

32. -the more complex the biological system is the less amount of IR required to induce changes
Radio waves
Food Irradiation
True
Radiation Absorbed Dose (RAD)

33. Gamma rays have high penetration capability
UV in the range of 200-280 nm
1 KGY
Cobalt 60
true

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Advanced Food Processing

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