Grade 9 Consumer Chemistry Week 6 - 7

All of these are advantages of food processing except?

• Lessened hazards from microbial pathogens

• Year-round availability of seasonal foods

• Development during some kinds of processing and handling of new chemicals that must be classed as toxicologically undesirable

• Inactivation of heat-labile, anti-nutritional substances

All of these are disadvantages of food processing except?

• Harm to the sensory properties and nutritive valve of some foods, particularly when severe methods of processing are applied to tissue foods.

• Development during some kinds of processing and handling of new chemicals that must be classed as toxicologically undesirable

• Increased variety of foods, some with enhanced sensory properties

• Damage to nutritional value

What are the two most important nutrients in fruits and vegetables that are lost if kept at room temperature

• Vitamins A and Z

• Vitamins A and C

• Vitamins E and D

• Vitamins B and F

Through what kind of reaction will cause certain amino acids like lysine to chemically bind with simple sugars to form brown pigments when it is exposed on a high storage temperature?

• Chemical Reaction

• Maillard Reaction

• Overreaction

• Over Reaction

How many types of changes in protein are there?

• 1

• 2

• 3

• 4

This type of change in protein during processing requires mild heat and is defined as the unfoldding of the protein complex structure

• Ionizing Radiations

• Saturation

• Denaturation

• Evaporation

This type of change in protein during processing produce charged particles that are called ions in the materials they strike and hence undesirable reactions may occur.

• Denaturation

• Ionizing Radiations

• Saturation

• Evaporation

Fill in the blanks. The nutritional value of fat lies in the energy it supplies to the body during ____________

• Hydration

• Digestion

• Dehydration

• Oxidation

Food processing only provides advantages and no disadvantages

• TRUE

• FALSE

Lipids Oxidation produces off flavor components called hydro peroxides

• TRUE

• FALSE