Irradiation

Question 1

The electromagnetic radiation differs in

Answer 1

1) Wavelength
2) Frequency
3) Penetration

Question 2

A light bulb emits __________ energy; however, there are other forms of energy that cannot be detected by the human eye, like cosmic rays, _______________ and ____________________

Answer 2

Visible; radio waves; ultra-violet (UV) light

Question 3

Ionizing radiations penetrate food materials to dry degrees, depending on the ____________________ and ____________________

Answer 3

Nature of food and characteristics of radiation

Question 4

The most radiation resistant microorganism is ____________________

Answer 4

Clostridium botulinum

Question 5

Some elements such as __________ are naturally radioactive; there can be radioactive by high-energy bombardment of their atoms, as in the case of __________

Answer 5

Uranium; Cobalt-60

Question 6

____________________ is a sensitive mixture of proteins and becomes thin and watery with a moderate radiation dose of 0.6 MRAD

Answer 6

Egg white

Question 7

Water in food is classified according to its __________

Answer 7

Mobility

Question 8

Shelf-life is quality-sustaining reactions (e.g. enzymatic reactions, Maillard browning, and oxidation) are dependent not so much on water content, but on ____________________

Answer 8

Water activity

Question 9

Give one example of protein gel and one example of carbohydrate gel

Answer 9

PROTEIN GEL: Gelatin (jello)

CARBOHYDRATE GEL: Pectin (jams/jellies)

Question 10

In ________, the FDA approved irradiation as a means of controlling microorganisms on spices, and in ________, the FDA widened the allowed uses of irradiation to additional foods, such as strawberries, poultry, ground beef, and pork

Answer 10

1983; 1985