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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. The food category - the purpose of irradiation - and the dose permitted in KGY
Dielectric Constant
First mechanisms by which IR achieves biological stability in food
gamma rays
When issued - approval includes

2. Gamma rays have high penetration capability
2-5 KGY
true
UV in the range of 200-280 nm
Cobalt 60

3. Traditional unit of measuring the amount of energy absorbed by food
0.005 KGY
0.2-5 KGY
Radiation Absorbed Dose (RAD)
Radio waves

4. -the more complex the biological system is the less amount of IR required to induce changes
Cobalt 60
The Electromagnetic Spectrum (EMS)
Gamma rays
True

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
Second mechanisms by which IR achieves biological stability in food
0.1-1 KGY)
The Electromagnetic Spectrum (EMS)
First mechanisms by which IR achieves biological stability in food

6. Which waves vary in frequency and are closer to Radio waves frequencies
Microwaves
True
Cesium 137
Gamma rays

7. Determines the affinity of a food system to absorb microwaves
gamma rays
Dielectric Constant
irradiated
5 KGY

8. Killing insects and eggs
UV in the range of 200-280 nm
When issued - approval includes
0.005 KGY
0.2-5 KGY

9. The quantity of radiation that results in the absorption of 100 ergs per gram of food
True
When issued - approval includes
Radiation Absorbed Dose (RAD)
Dielectric Loss

10. Dose required to kill virus?
Second mechanisms by which IR achieves biological stability in food
Cobalt 59
True
100 KGY dose

11. Dose required to kill yeast and mold?
5 KGY
5 Years
Radiation Absorbed Dose (RAD)
0.005 KGY

12. What changes take place when energy is applied?
Chemical and physical
0.2-5 KGY
UV in the range of 200-280 nm
Cobalt 59

13. The common source of energy in food irradiation
Dielectric Constant
0.12 KGY
0.2-5 KGY
Cobalt 60

14. These rays have no penetration depth hence it will only achieve surface inactivation of microorganisms
Radiation Absorbed Dose (RAD)
1 KGY
50 KGY
UV in the range of 200-280 nm

15. Dose required to kill bacterial spores?
50 KGY
Radio waves
UV in the range of 200-280 nm
2-5 KGY

16. Describes a continuous range of radiation energy having an electric and a magnetic component
The Electromagnetic Spectrum (EMS)
Cobalt 60
Cobalt 59
5 KGY

17. Determines how far the MWs penetrate into the food and it is affected by the above two parameters plus others
5 Years
Gamma rays
Penetration Depth
irradiated

18. Dose required to kill insects?
5 KGY
Second mechanisms by which IR achieves biological stability in food
Dielectric Constant
0.12 KGY

19. High frequency & short wave length
True
Radio waves
Gamma rays
Penetration Depth

20. Low frequency & long wave length
Penetration Depth
0.1-1 KGY)
True
Radio waves

21. Sprouting inhibition and
irradiated
Microwaves
1 KGY
0.1-1 KGY)

22. Determines the amount of heat generated from the absorbed energy
Food Irradiation
5 KGY
Dielectric Loss
2-5 KGY

23. Made into an unstable isotope by neutron bombardment
0.1-1 KGY)
Cobalt 59
Cesium 137
irradiated

24. Is also used in limited extent in food irradiation.
Chemical and physical
100 KGY dose
Cesium 137
Dielectric Loss

25. Pasteurization of herbs and spices
100 KGY dose
true
5 KGY
2-5 KGY

26. Dose required to kill a man
gamma rays
Microwaves
Radio waves
0.005 KGY

27. What kind of rays does Cobalt 60 emit?
Penetration Depth
5 KGY
gamma rays
Radiation Absorbed Dose (RAD)

28. 100 RAD
UV in the range of 200-280 nm
0.1-1 KGY)
1 GY
Dielectric Constant

29. 1000 GY
5 KGY
1 GY
1 KGY
Radiation Absorbed Dose (RAD)

30. Food treated with ionizing radiation (IR) is said to be
Penetration Depth
0.1-1 KGY)
1 GY
irradiated

31. Utilizing (IR) to achieve biological stability of food by inhibiting or minimizing spoilage reactions
Cesium 137
true
Radio waves
Food Irradiation

32. Direct Effect- a bullet-like effect with high energy particles impacting the vital parts of the cell
Cesium 137
Radio waves
First mechanisms by which IR achieves biological stability in food
Penetration Depth

33. What is the half life of Cobalt 60?
100 KGY dose
Cesium 137
5 Years
Second mechanisms by which IR achieves biological stability in food