logo

CuriousTab

CuriousTab

Discussion


Home Microbiology Wine and Beer Comments

  • Question
  • The spoilage most commonly occurring in wine is tourne which refers to


  • Options
  • A. acid formation from aldehyde and ketones
  • B. acid formation from sugars, glucose and fructose
  • C. both (a) and (b)
  • D. none of the above

  • Correct Answer
  • acid formation from sugars, glucose and fructose 


  • Wine and Beer problems


    Search Results


    • 1. Acetic acid bacteria spoiling musts and wines are inhibited by

    • Options
    • A. 5-7% alcohol by volume
    • B. 14-15% alcohol by volume
    • C. 24-25% alcohol by volume
    • D. 30-35% alcohol by volume
    • Discuss
    • 2. Which of the following is not an ale type of beer?

    • Options
    • A. Weiss beer
    • B. Porterr
    • C. Stout
    • D. Pilsener
    • Discuss
    • 3. If the mash in the brewhouse is held too long it may undergo

    • Options
    • A. butyric acid fermentation
    • B. lactic acid fermentation
    • C. both (a) and (b)
    • D. citric acid fermentation
    • Discuss
    • 4. Most important species of vinegar bacteria causing sliminess is

    • Options
    • A. Acetobacter aceti
    • B. Saccharomyces carlsbergiensis
    • C. Lactobacillus lactis
    • D. None of the above
    • Discuss
    • 5. The potential spoilage organism in beer is

    • Options
    • A. Saccharomyces diastaticus
    • B. S. carlsbergensis
    • C. S. cerevisiae
    • D. S. lactis
    • Discuss
    • 6. Mined salt has been reported to contain about

    • Options
    • A. 50% Micrococcus, 10% Coryneforms and 14% Bacillus
    • B. 60% Micrococcus, 20% Coryneforms and 14% Bacillus
    • C. 70% Micrococcus, 20% Coryneforms and 4% Bacillus
    • D. 70% Micrococcus, 20% Coryneforms and 10% Bacillus
    • Discuss
    • 7. The manufacture of baker's yeast involve

    • Options
    • A. S. cerevisiae
    • B. S. thermophillus
    • C. Bacillus subtilis
    • D. none of these
    • Discuss
    • 8. The most commonly used medium for the build up of cultures and the production of baker's yeast consist of

    • Options
    • A. molasses and minerals
    • B. molasses, minerals and salts
    • C. molasses
    • D. molasses, lactose
    • Discuss
    • 9. Which of the following (s) is/are the major spoilage of soft drinks from the marked growth of yeasts and bacteria?

    • Options
    • A. Cloudiness and ropiness
    • B. Flat sour spoilage
    • C. Superficial fungal spoilage
    • D. Pin-spot molding
    • Discuss
    • 10. The most important organism involved in manufacture of Koji is

    • Options
    • A. Aspergillus oryzae
    • B. Aspergillus soyae
    • C. both (a) and (b)
    • D. Lactobacillus lactis
    • Discuss


    Comments

    There are no comments.

Enter a new Comment