10 Questions
What type of enzymes do psychrotrophic bacteria, such as P. fluorescence, produce?
Lipase
Which of the following fatty acids are responsible for the rancid flavor and odor in dairy products?
C-4 and C-8
What is the most common fermentative defect in fluid milk products?
Souring
Which of the following bacteria is responsible for the ropy texture defect in milk?
Lactococcus
What is the term for bacteria that do not form spores?
Non-spore-formers
What is the term for the production of more than one type of acid?
Heterofermentation
Which of the following genera of bacteria is not typically involved in the spoilage of milk and fermented products?
Bacillus
What is the term for the unpleasant odor and taste of spoiled milk?
Acetic flavor
Which of the following is a characteristic of lactic acid bacteria?
Production of more than one type of acid
Which of the following coliform bacteria is responsible for spoilage of milk?
Enterobacter
This quiz covers the common defects that can occur during dairy fermentation, including ropy defects, gas production, pink discoloration, and off flavors. Learn about the lactic acid bacteria species associated with these defects and how to prevent them.
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