Milk and Milk Products – Section 1

16. Acidophilus milk which is used for its therapeutic properties in intestinal disorders requires for its manufacture a pure culture of

A. Lactobacillus bulgaricus
B. Streptococcus thermophilus
C. Lactobacillus acidophilus
D. None of the above

Correct Answer: C. Lactobacillus acidophilus

17. A yellow color in the creamy layer of milk may be caused by

A. Pseudomonas synxantha
B. Pseudomonas syncyanea
C. both (a) and (b)
D. S. marcescens

Correct Answer: A. Pseudomonas synxantha

18. An alkaline reaction in milk is caused by the alkali formers bacteria as

A. Pseudomonas fluorescens
B. A. viscolactis
C. both (a) and (b)
D. none of these

Correct Answer: C. both (a) and (b)

19. Bacterial ropiness in milk is caused by

A. slimy capsular material from the cells usually gums or mucins
B. slimy capsular material from the cells usually proteins
C. slimy capsular material from the cells usually lipids
D. all of the above

Correct Answer: A. slimy capsular material from the cells usually gums or mucins

20. Fishiness in butter is caused by

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

Correct Answer: A. Aeromonas hydrophila

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