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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. The quantity of radiation that results in the absorption of 100 ergs per gram of food
Radiation Absorbed Dose (RAD)
Penetration Depth
5 Years
irradiated

2. Which waves vary in frequency and are closer to Radio waves frequencies
Cobalt 59
0.2-5 KGY
Microwaves
Cobalt 60

3. High frequency & short wave length
100 KGY dose
Gamma rays
UV in the range of 200-280 nm
0.1-1 KGY)

4. What changes take place when energy is applied?
0.12 KGY
Cesium 137
Penetration Depth
Chemical and physical

5. Low frequency & long wave length
Dielectric Loss
Radio waves
Food Irradiation
50 KGY

6. Pasteurization of herbs and spices
Radio waves
Chemical and physical
gamma rays
2-5 KGY

7. Is also used in limited extent in food irradiation.
Cesium 137
Penetration Depth
Radiation Absorbed Dose (RAD)
0.1-1 KGY)

8. Food treated with ionizing radiation (IR) is said to be
irradiated
UV in the range of 200-280 nm
0.2-5 KGY
First mechanisms by which IR achieves biological stability in food

9. 1000 GY
true
Chemical and physical
1 KGY
UV in the range of 200-280 nm

10. Determines how far the MWs penetrate into the food and it is affected by the above two parameters plus others
Dielectric Constant
Gamma rays
Penetration Depth
Cobalt 60

11. The food category - the purpose of irradiation - and the dose permitted in KGY
When issued - approval includes
Penetration Depth
Second mechanisms by which IR achieves biological stability in food
Radio waves

12. The common source of energy in food irradiation
Cobalt 60
UV in the range of 200-280 nm
Dielectric Constant
gamma rays

13. Killing insects and eggs
UV in the range of 200-280 nm
0.2-5 KGY
Chemical and physical
5 Years

14. Direct Effect- a bullet-like effect with high energy particles impacting the vital parts of the cell
The Electromagnetic Spectrum (EMS)
100 KGY dose
Cesium 137
First mechanisms by which IR achieves biological stability in food

15. Made into an unstable isotope by neutron bombardment
Cobalt 59
5 Years
Food Irradiation
First mechanisms by which IR achieves biological stability in food

16. Dose required to kill bacterial spores?
Radio waves
1 GY
0.005 KGY
50 KGY

17. Dose required to kill virus?
100 KGY dose
0.2-5 KGY
irradiated
0.005 KGY

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

19. Determines the amount of heat generated from the absorbed energy
Radio waves
0.1-1 KGY)
Dielectric Loss
Cesium 137

20. What kind of rays does Cobalt 60 emit?
true
gamma rays
irradiated
5 Years

21. Gamma rays have high penetration capability
Dielectric Loss
true
0.2-5 KGY
Gamma rays

22. These rays have no penetration depth hence it will only achieve surface inactivation of microorganisms
The Electromagnetic Spectrum (EMS)
5 KGY
Radio waves
UV in the range of 200-280 nm

23. 100 RAD
Food Irradiation
0.2-5 KGY
1 GY
1 KGY

24. Dose required to kill yeast and mold?
5 KGY
0.2-5 KGY
UV in the range of 200-280 nm
1 GY

25. Utilizing (IR) to achieve biological stability of food by inhibiting or minimizing spoilage reactions
100 KGY dose
50 KGY
1 GY
Food Irradiation

26. Traditional unit of measuring the amount of energy absorbed by food
5 KGY
Microwaves
irradiated
Radiation Absorbed Dose (RAD)

27. Sprouting inhibition and
Gamma rays
Radiation Absorbed Dose (RAD)
0.1-1 KGY)
50 KGY

28. -the more complex the biological system is the less amount of IR required to induce changes
True
1 GY
5 KGY
2-5 KGY

29. Dose required to kill a man
Second mechanisms by which IR achieves biological stability in food
0.005 KGY
Radiation Absorbed Dose (RAD)
Chemical and physical

30. What is the half life of Cobalt 60?
Radiation Absorbed Dose (RAD)
5 Years
50 KGY
Radiation Absorbed Dose (RAD)

31. Determines the affinity of a food system to absorb microwaves
Dielectric Constant
0.1-1 KGY)
First mechanisms by which IR achieves biological stability in food
5 KGY

32. Describes a continuous range of radiation energy having an electric and a magnetic component
Dielectric Constant
0.2-5 KGY
The Electromagnetic Spectrum (EMS)
True

33. 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
true
Microwaves
Second mechanisms by which IR achieves biological stability in food
Dielectric Constant