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Home Microbiology Wine and Beer Comments

  • Question
  • Heavy, thick, slimy film of bacteria in the slow process of vinegar manufacture reduces


  • Options
  • A. the rate of hydrogenation
  • B. the rate of acetification
  • C. the rate of esterification
  • D. the rate of purification

  • Correct Answer
  • the rate of acetification 


  • Wine and Beer problems


    Search Results


    • 1. The fermentation of wine can be carried out using the strains of

    • Options
    • A. Saccharomyces cerevisiae
    • B. Saccharomyces carlsbergenesis
    • C. Bacillus subtilis
    • D. Pedicoccus cerevisiae
    • Discuss
    • 2. In chilled shrimp __________ is chiefly responsible for spoilage.

    • Options
    • A. Achromobacter
    • B. Pseudomonas
    • C. Micrococcus or Bacillus species
    • D. Molds or yeasts
    • Discuss
    • 3. 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
    • 4. 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
    • 5. 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
    • 6. Sarcina sickness of beer is caused by

    • Options
    • A. Saccharomyces cerevisiae
    • B. Pedicoccus cerevisiae
    • C. S. carlsbergensis
    • D. Zygomonas anaeroium
    • Discuss
    • 7. The micro-organisms causing wine spoilage are

    • Options
    • A. wild yeast
    • B. moulds
    • C. bacteria
    • D. all of these
    • Discuss
    • 8. Gassiness resulting from the liberation of carbon dioxide by hetero fermentative lactics is called

    • Options
    • A. pousse
    • B. amertume
    • C. mannitic
    • D. none of these
    • Discuss
    • 9. A special beer yeast of the bottom type is

    • Options
    • A. S. cerevisiae
    • B. S. carlsbergensis
    • C. S. thermophillus
    • D. none of these
    • Discuss
    • 10. When the fermentation of fructose results in the bitter product mannitol, the fermentation is sometime termed as-

    • Options
    • A. mannkic
    • B. mannitic
    • C. amertume
    • D. none of these
    • Discuss


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