Food Deterioration and Preservation
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Questions and Answers

What are the agents of food deterioration mentioned in the text?

  • Microorganisms, natural food enzymes, water, heat, cold, light and radiation, chemicals, dryness (correct)
  • Microorganisms, artificial food enzymes, air, pressure, darkness, pesticides
  • Bacteria, mold, yeast, viruses, fungi, oxygen, temperature, humidity
  • Bacteria, antioxidants, preservatives, air, sunlight, moisture

How do microorganisms affect food quality according to the text?

  • They enhance flavor and texture; increase nutritional value; extend shelf life.
  • They have no impact on food quality.
  • They ferment sugars and hydrolyze starches and cellulose; hydrolyze fats and produce rancidity; digest proteins and produce putrid and ammonia-like odours. (correct)
  • They reduce the growth of bacteria and mold in food products.

What are the results of food deterioration mentioned in the text?

  • Loss of colour only; no change in texture or flavour; no impact on safety or nutrition
  • Loss of colour, texture, flavour or other qualities (organoleptic desirability); loss in nutrition; safety aspects (contamination); loss in aesthetic appearance (correct)
  • Enhanced colour and texture; improved flavour; increased nutritional value; enhanced safety
  • No change in organoleptic qualities; increased nutrition; improved safety aspects

What is mentioned as a reason for food deterioration in horticultural products?

<p>Removal from parent plant causes stress; other undesirable chemical and compositional changes (D)</p> Signup and view all the answers

What is mentioned as an example of a pathogenic microorganism capable of causing serious illnesses?

<p>Salmonella (B)</p> Signup and view all the answers

Food deterioration results in loss of colour, texture, flavour, or other qualities

<p>True (A)</p> Signup and view all the answers

Microbial spoilage may result from excessive numbers of bacteria, yeast, and molds in foods

<p>True (A)</p> Signup and view all the answers

All foods undergo the same degree of deterioration

<p>False (B)</p> Signup and view all the answers

Fresh materials, such as fresh produce and raw meats, are less likely to harbor pathogenic microorganisms

<p>False (B)</p> Signup and view all the answers

Heat and cold are not mentioned as agents of food deterioration in the text

<p>False (B)</p> Signup and view all the answers

Study Notes

Food Deterioration

  • Food deterioration results in loss of color, texture, flavor, or other qualities
  • Microorganisms are agents of food deterioration
  • Microbial spoilage occurs when there are excessive numbers of bacteria, yeast, and molds in foods

Factors Affecting Food Quality

  • Microorganisms affect food quality
  • Horticultural products deteriorate due to physical damage or bruises

Pathogenic Microorganisms

  • Certain microorganisms are capable of causing serious illnesses
  • Examples of pathogenic microorganisms include bacteria, yeast, and molds

Food Conditions

  • Fresh materials, such as fresh produce and raw meats, are more likely to harbor pathogenic microorganisms

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Description

Learn about the reasons and results of food deterioration, and the methods of preservation. This quiz covers fundamental concepts in food science and technology.

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