10 Questions
What do lactic acid bacteria convert lactose to in Swiss cheese making?
Lactic acid
What happens when raw milk is held at room temperature for a long time?
A series of changes may take place in sequence
What is antibiosis?
The growth of one organism inhibits the growth of another
Why may lactic starter cultures not propagate well in reconstituted milk?
Due to the presence of inhibitory substances
What is the role of Strept. lactis in cheese production?
To convert lactose to lactic acid
What happens to the remaining lactose fraction after Strept. lactis acts on it?
It is converted to lactic acid by Lactobacilli
What is the role of Lactobacilli in cheese production?
To convert the remaining lactose fraction to lactic acid
What grows on the surface of the curd during cheese production?
Moulds like Geotricum candidum
What is the end result of the oxidation of lactic acid by moulds like Geotricum candidum?
The reduction of acidity due to the formation of CO2 and water
What is the approximate concentration of lactic acid produced in the curd?
2% lactic acid
This quiz covers the normal fermentation of milk, a process that occurs when microorganisms grow in milk, resulting in a series of changes. Learn about the four periods of milk fermentation and how temperature affects the process.
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