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Home Microbiology Heated Canned Foods Comments

  • Question
  • The ability of B. coagulans to grow in tomato juice depends upon the


  • Options
  • A. number of spores present
  • B. the availability of oxygen
  • C. the pH of the juice
  • D. all of these

  • Correct Answer
  • all of these 


  • Heated Canned Foods problems


    Search Results


    • 1. Canned sweetened condensed milk may become thickened by

    • Options
    • A. Bacillus species
    • B. Clostridium species
    • C. Micrococcus species
    • D. Saccharomyces species
    • Discuss
    • 2. The immediate source of the flat sour bacteria is usually the

    • Options
    • A. plant equipment
    • B. sugar
    • C. starch
    • D. soil
    • Discuss
    • 3. Canned meat and fish exhibit spoilage by

    • Options
    • A. Bacillus species
    • B. Clostridium species
    • C. both (a) and (b)
    • D. Saccharomyces
    • Discuss
    • 4. Acid foods with a pH between 4.5 and 3.7 usually are spoiled by

    • Options
    • A. B. coagulans
    • B. Saccharolytic anaerobe
    • C. both (a) and (b)
    • D. none of these
    • Discuss
    • 5. High acid foods with a pH above 5.3 are especially subjected to

    • Options
    • A. flat sour spoilage
    • B. putrefaction
    • C. both (a) and (b)
    • D. TA spoilage
    • Discuss
    • 6. Medium acid foods with a pH between 5.3 and 4.5 are likely to undergo

    • Options
    • A. flat sour spoilage
    • B. putrefaction
    • C. both (a) and (b)
    • D. TA spoilage
    • Discuss
    • 7. Flat sour spoilage of acid foods is caused by

    • Options
    • A. B. coagulans
    • B. B. pepo
    • C. both (a) and (b)
    • D. B. stearothermophillus
    • Discuss
    • 8. The putrifactive anaerobes grow best in the

    • Options
    • A. low acid canned foods
    • B. medium acid canned foods
    • C. high acid canned foods
    • D. any of these
    • Discuss
    • 9. High acid foods with a pH < 3.7 undergo spoilage by

    • Options
    • A. Saccharolytic anaerobe
    • B. B. coagulans
    • C. both (a) and (b)
    • D. do not undergo spoilage by microorganisms
    • Discuss
    • 10. Group I C. botulinum strains generally includes in

    • Options
    • A. all types of strains (proteolytic)A, B and F
    • B. all types of strains (non-proteolytic) E and F
    • C. all types of strains (proteolytic)C, D and F
    • D. none of the above
    • Discuss


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