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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 food category - the purpose of irradiation - and the dose permitted in KGY
Cobalt 59
5 Years
Microwaves
When issued - approval includes

2. Direct Effect- a bullet-like effect with high energy particles impacting the vital parts of the cell
5 KGY
Cobalt 60
First mechanisms by which IR achieves biological stability in food
0.1-1 KGY)

3. Dose required to kill virus?
Radiation Absorbed Dose (RAD)
0.1-1 KGY)
100 KGY dose
First mechanisms by which IR achieves biological stability in food

4. Sprouting inhibition and
0.1-1 KGY)
Gamma rays
Penetration Depth
Food Irradiation

5. The common source of energy in food irradiation
Gamma rays
2-5 KGY
Cobalt 60
When issued - approval includes

6. What changes take place when energy is applied?
Radiation Absorbed Dose (RAD)
2-5 KGY
Dielectric Constant
Chemical and physical

7. Killing insects and eggs
Second mechanisms by which IR achieves biological stability in food
True
Microwaves
0.2-5 KGY

8. These rays have no penetration depth hence it will only achieve surface inactivation of microorganisms
First mechanisms by which IR achieves biological stability in food
Cobalt 60
Second mechanisms by which IR achieves biological stability in food
UV in the range of 200-280 nm

9. Determines the affinity of a food system to absorb microwaves
True
Cesium 137
Dielectric Constant
1 KGY

10. Traditional unit of measuring the amount of energy absorbed by food
Radiation Absorbed Dose (RAD)
Dielectric Loss
The Electromagnetic Spectrum (EMS)
Radio waves

11. 1000 GY
5 KGY
First mechanisms by which IR achieves biological stability in food
Cobalt 60
1 KGY

12. Is also used in limited extent in food irradiation.
True
Radiation Absorbed Dose (RAD)
Cesium 137
50 KGY

13. 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
Cobalt 59
5 Years
irradiated
Second mechanisms by which IR achieves biological stability in food

14. Dose required to kill bacterial spores?
Gamma rays
50 KGY
5 KGY
Dielectric Loss

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

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

17. Dose required to kill insects?
gamma rays
Food Irradiation
0.12 KGY
UV in the range of 200-280 nm

18. High frequency & short wave length
Gamma rays
Food Irradiation
Second mechanisms by which IR achieves biological stability in food
0.1-1 KGY)

19. Which waves vary in frequency and are closer to Radio waves frequencies
Microwaves
Chemical and physical
The Electromagnetic Spectrum (EMS)
Cobalt 59

20. -the more complex the biological system is the less amount of IR required to induce changes
5 Years
Radiation Absorbed Dose (RAD)
True
1 GY

21. Describes a continuous range of radiation energy having an electric and a magnetic component
The Electromagnetic Spectrum (EMS)
Chemical and physical
Cobalt 59
Cesium 137

22. What is the half life of Cobalt 60?
1 KGY
50 KGY
5 Years
0.2-5 KGY

23. Determines the amount of heat generated from the absorbed energy
1 GY
Dielectric Loss
5 Years
true

24. Low frequency & long wave length
Radio waves
100 KGY dose
5 KGY
Radiation Absorbed Dose (RAD)

25. Dose required to kill a man
Radiation Absorbed Dose (RAD)
2-5 KGY
0.005 KGY
1 GY

26. Food treated with ionizing radiation (IR) is said to be
irradiated
0.12 KGY
Chemical and physical
The Electromagnetic Spectrum (EMS)

27. Made into an unstable isotope by neutron bombardment
Cobalt 59
1 KGY
First mechanisms by which IR achieves biological stability in food
Chemical and physical

28. 100 RAD
0.1-1 KGY)
Dielectric Loss
1 GY
1 KGY

29. Gamma rays have high penetration capability
0.1-1 KGY)
Gamma rays
0.2-5 KGY
true

30. Pasteurization of herbs and spices
UV in the range of 200-280 nm
1 GY
Gamma rays
2-5 KGY

31. The quantity of radiation that results in the absorption of 100 ergs per gram of food
50 KGY
100 KGY dose
Radiation Absorbed Dose (RAD)
0.12 KGY

32. Dose required to kill yeast and mold?
irradiated
Radio waves
Microwaves
5 KGY

33. What kind of rays does Cobalt 60 emit?
Cobalt 59
When issued - approval includes
gamma rays
The Electromagnetic Spectrum (EMS)