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  • Question
  • Fishiness in butter is caused by


  • Options
  • A. Aeromonas hydrophila
  • B. Pseudomonas synxantha
  • C. Pseudomonas syncyanea
  • D. none of these

  • Correct Answer
  • Aeromonas hydrophila 


  • Milk and Milk Products problems


    Search Results


    • 1. 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
    • 2. A yellow color in the creamy layer of milk may be caused by

    • Options
    • A. Pseudomonas synxantha
    • B. Pseudomonas syncyanea
    • C. both (a) and (b)
    • D. S. marcescens
    • Discuss
    • 3. Pseudomonas nigrifaciens in mildly salted butter may cause

    • Options
    • A. black smudge
    • B. greenish areas
    • C. pink color
    • D. none of these
    • Discuss
    • 4. An alkaline reaction in milk is caused by the alkali formers bacteria as

    • Options
    • A. Pseudomonas fluorescens
    • B. A. viscolactis
    • C. both (a) and (b)
    • D. none of these
    • Discuss
    • 5. Black mold rot is caused by

    • Options
    • A. A.flavus
    • B. A. niger
    • C. Trichoderma
    • D. Trichothecium roseum
    • Discuss
    • 6. 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
    • 7. 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
    • 8. 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
    • 9. 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
    • Discuss
    • 10. 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


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