Dairy Defects in Fermentation
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Questions and Answers

What type of enzymes do psychrotrophic bacteria, such as P. fluorescence, produce?

  • Cellulase
  • Lipase (correct)
  • Protease
  • Amylase
  • Which of the following fatty acids are responsible for the rancid flavor and odor in dairy products?

  • C-6 and C-12
  • C-10 and C-14
  • C-4 and C-8 (correct)
  • C-4 and C-10
  • What is the most common fermentative defect in fluid milk products?

  • Ropy texture
  • Souring (correct)
  • Putridity
  • Rancidity
  • Which of the following bacteria is responsible for the ropy texture defect in milk?

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

    What is the term for bacteria that do not form spores?

    <p>Non-spore-formers (C)</p> Signup and view all the answers

    What is the term for the production of more than one type of acid?

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

    Which of the following genera of bacteria is not typically involved in the spoilage of milk and fermented products?

    <p>Bacillus (C)</p> Signup and view all the answers

    What is the term for the unpleasant odor and taste of spoiled milk?

    <p>Acetic flavor (C)</p> Signup and view all the answers

    Which of the following is a characteristic of lactic acid bacteria?

    <p>Production of more than one type of acid (D)</p> Signup and view all the answers

    Which of the following coliform bacteria is responsible for spoilage of milk?

    <p>Enterobacter (D)</p> Signup and view all the answers

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