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  • Question
  • The predominant kind of bacteria causing spoilage in fish at chilling temperature is


  • Options
  • A. species of Pseudomonas
  • B. Micrococcus
  • C. Bacillus
  • D. none of these

  • Correct Answer
  • species of Pseudomonas 


  • Fish and Sea Foods problems


    Search Results


    • 1. The bacteria most often involved in the spoilage of fish are

    • Options
    • A. part of the natural flora of the external slime of fishes and their intestinal contents
    • B. part of the natural flora of the internal slime of fishes only
    • C. both (a) and (b)
    • D. none of the above
    • Discuss
    • 2. Marinated (sour pickled) fish should not have spoilage problems unless

    • Options
    • A. the acid content is very high
    • B. the acid content is low enough
    • C. the acid content is moderate
    • D. none of the above
    • Discuss
    • 3. The chief spoilage organisms on smoked fish are

    • Options
    • A. molds
    • B. bacteria
    • C. both (a) and (b)
    • D. fungi
    • Discuss
    • 4. The favouring conditions for floaters is

    • Options
    • A. high intial amounts of salt
    • B. thick skin that does not allow gas to diffuse out
    • C. both (a) and (b)
    • D. none of these
    • Discuss
    • 5. An excessively high temperature in the fermentation of sauerkraut may inhibit the growth of

    • Options
    • A. Leuconostoc
    • B. Pediococcus cerevisiae
    • C. both (a) and (b)
    • D. none of these
    • Discuss
    • 6. Normally, due to the holding of the chilled fish

    • Options
    • A. Pseudomonas increase in numbers
    • B. Achromobacters decrease
    • C. Flavobacteria increase temporarily and then decrease
    • D. all of the above
    • Discuss
    • 7. A musty or muddy odor of the fish is attributed to

    • Options
    • A. the growth of Streptomyces species in the mud at the bottom of the body of water
    • B. the mud at the bottom of the body of water
    • C. the growth of Pseudomonas species in the mud at the bottom of the body of water
    • D. none of the above
    • Discuss
    • 8. At higher temperatures, the souring of Oysters may be the result of the fermentation of sugars by

    • Options
    • A. Coliform bacteria
    • B. Streptococci
    • C. Lactobacilli and yeast
    • D. all of these
    • Discuss
    • 9. The red or pink color of the fish is generally caused from the growth of

    • Options
    • A. Sarcina
    • B. Micrococcus or Bacillus species
    • C. Molds or yeasts
    • D. all of these
    • Discuss
    • 10. In chilled shrimp __________ is chiefly responsible for spoilage.

    • Options
    • A. Achromobacter
    • B. Pseudomonas
    • C. Micrococcus or Bacillus species
    • D. Molds or yeasts
    • Discuss


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