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Home Microbiology Milk and Milk Products Comments

  • Question
  • Certain strains of Streptococcus lactis var. maltigenes may produce


  • Options
  • A. bitter flavor
  • B. acid flavor
  • C. burnt or caramel flavor
  • D. none of these

  • Correct Answer
  • burnt or caramel flavor 


  • Milk and Milk Products problems


    Search Results


    • 1. Esters like flavors in butter are resulted from the action of

    • Options
    • A. P. mephitica
    • B. Aeromonas hydrophila
    • C. P. fragi
    • D. Pseudomonas synxantha
    • Discuss
    • 2. Acidophilus milk which is used for its therapeutic properties in intestinal disorders requires for its manufacture a pure culture of

    • Options
    • A. Lactobacillus bulgaricus
    • B. Streptococcus thermophilics
    • C. Lactobacillus acidophilus
    • D. None of the above
    • Discuss
    • 3. A brown color in milk may result from

    • Options
    • A. Pseudomonas putrefaciens
    • B. the enzymatic oxidation of tyrosine by P. fluorescens
    • C. both (a) and (b)
    • D. S. marcescens
    • Discuss
    • 4. Fishiness in butter is caused by

    • Options
    • A. Aeromonas hydrophila
    • B. Pseudomonas synxantha
    • C. Pseudomonas syncyanea
    • D. none of these
    • Discuss
    • 5. The chief type of spoilage in sweetened condensed milk may be

    • Options
    • A. gas formation by sucrose fermenting yeasts
    • B. thickening caused by micrococci
    • C. mold colonies growing on the surface
    • D. all of the above
    • Discuss
    • 6. Swelling of the can is caused primarily by

    • Options
    • A. gas forming, anaerobic spore formers
    • B. gas forming, aerobic spore formers
    • C. both (a) and (b)
    • D. none of these
    • Discuss
    • 7. Cheese cancer of Swiss and similar cheese is caused by

    • Options
    • A. Oospora Crustacea
    • B. Oospora caseovorans
    • C. Oospora aurianticum
    • D. none of these
    • Discuss
    • 8. Which of the following species of Clostridium is responsible for formation of dark green to black colours in cheese?

    • Options
    • A. Clostridium tyrobutyricum
    • B. Clostridium sporogenes
    • C. Clostridium herbarum
    • D. None of these
    • Discuss
    • 9. Pseudomonas syncyanea produces a

    • Options
    • A. bluish gray to brownish color in milk in its pure form
    • B. brownish color to bluish gray in milk in its pure form
    • C. gray to brownish color in milk
    • D. yellow color in milk
    • Discuss
    • 10. Bulgarian butter milk is made with the help of

    • Options
    • A. Lactobacillus bulgaricus
    • B. Streptococcus lactis
    • C. Streptococcus thermophilus
    • D. S. cremoris
    • Discuss


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