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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. Pasteurization of herbs and spices
Cobalt 60
true
2-5 KGY
0.12 KGY

2. What kind of rays does Cobalt 60 emit?
UV in the range of 200-280 nm
gamma rays
When issued - approval includes
1 KGY

3. Utilizing (IR) to achieve biological stability of food by inhibiting or minimizing spoilage reactions
Food Irradiation
Gamma rays
Radio waves
UV in the range of 200-280 nm

4. 100 RAD
Radio waves
Cesium 137
0.1-1 KGY)
1 GY

5. Dose required to kill bacterial spores?
50 KGY
Cobalt 59
True
First mechanisms by which IR achieves biological stability in food

6. What changes take place when energy is applied?
Dielectric Constant
UV in the range of 200-280 nm
The Electromagnetic Spectrum (EMS)
Chemical and physical

7. 1000 GY
Chemical and physical
Radiation Absorbed Dose (RAD)
True
1 KGY

8. The common source of energy in food irradiation
Cobalt 60
Food Irradiation
Penetration Depth
1 KGY

9. 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
Radiation Absorbed Dose (RAD)
Second mechanisms by which IR achieves biological stability in food
True
1 KGY

10. Sprouting inhibition and
Radiation Absorbed Dose (RAD)
2-5 KGY
0.1-1 KGY)
Food Irradiation

11. Low frequency & long wave length
true
Dielectric Constant
Radio waves
Microwaves

12. High frequency & short wave length
Cobalt 60
Gamma rays
irradiated
1 KGY

13. Is also used in limited extent in food irradiation.
Cesium 137
Radiation Absorbed Dose (RAD)
When issued - approval includes
Food Irradiation

14. Killing insects and eggs
Gamma rays
irradiated
0.2-5 KGY
True

15. Determines the affinity of a food system to absorb microwaves
Dielectric Constant
Dielectric Loss
Food Irradiation
0.1-1 KGY)

16. Dose required to kill insects?
0.2-5 KGY
Gamma rays
0.12 KGY
Penetration Depth

17. Gamma rays have high penetration capability
Dielectric Constant
0.12 KGY
Penetration Depth
true

18. -the more complex the biological system is the less amount of IR required to induce changes
When issued - approval includes
0.12 KGY
Radio waves
True

19. Dose required to kill virus?
Dielectric Constant
100 KGY dose
Chemical and physical
First mechanisms by which IR achieves biological stability in food

20. Traditional unit of measuring the amount of energy absorbed by food
0.2-5 KGY
Cobalt 60
Second mechanisms by which IR achieves biological stability in food
Radiation Absorbed Dose (RAD)

21. What is the half life of Cobalt 60?
0.1-1 KGY)
5 Years
Second mechanisms by which IR achieves biological stability in food
UV in the range of 200-280 nm

22. Made into an unstable isotope by neutron bombardment
Cobalt 59
100 KGY dose
Food Irradiation
0.005 KGY

23. Determines the amount of heat generated from the absorbed energy
5 KGY
Penetration Depth
Cesium 137
Dielectric Loss

24. Dose required to kill a man
Gamma rays
Cesium 137
True
0.005 KGY

25. These rays have no penetration depth hence it will only achieve surface inactivation of microorganisms
2-5 KGY
Dielectric Constant
UV in the range of 200-280 nm
gamma rays

26. The quantity of radiation that results in the absorption of 100 ergs per gram of food
gamma rays
Radiation Absorbed Dose (RAD)
True
Radio waves

27. Determines how far the MWs penetrate into the food and it is affected by the above two parameters plus others
Penetration Depth
The Electromagnetic Spectrum (EMS)
Dielectric Constant
Microwaves

28. Direct Effect- a bullet-like effect with high energy particles impacting the vital parts of the cell
Chemical and physical
Radio waves
First mechanisms by which IR achieves biological stability in food
Second mechanisms by which IR achieves biological stability in food

29. The food category - the purpose of irradiation - and the dose permitted in KGY
When issued - approval includes
irradiated
1 KGY
Cobalt 60

30. Describes a continuous range of radiation energy having an electric and a magnetic component
0.12 KGY
The Electromagnetic Spectrum (EMS)
UV in the range of 200-280 nm
0.2-5 KGY

31. Food treated with ionizing radiation (IR) is said to be
Chemical and physical
Second mechanisms by which IR achieves biological stability in food
1 KGY
irradiated

32. Dose required to kill yeast and mold?
1 KGY
0.005 KGY
Dielectric Loss
5 KGY

33. Which waves vary in frequency and are closer to Radio waves frequencies
true
True
Cobalt 59
Microwaves