Question

Yeast is used in the production of.
A. Cheese and butter
B. Citric acid and lactic acid
C. Bread and beer
D. Lipase and pectinase

Answer 1

Hint: The fermentation of yeast takes place in the aerobic conditions (in presence of air or oxygen). Ripening of yeasts produced under hygienic conditions in a specialized fermenter but with specific growth parameters and other nutrient sources.

Complete step by step answer:
Yeast is the single-celled microorganism that belongs to the Kingdom fungus. They are eukaryotes. Saccharomyces cerevisiae is also known as baker’s yeast that is widely used in the industries.
The yeast is used to manufacture fermented foods, cookies, alcohol and in cakes. There are three different forms of yeast: compressed yeast is soft beige solid with limited storage properties; active dry yeast presented in beads or granules that need to be rehydrated; instant yeast is in powdered form used in home baking.
The most common use of yeast is in bread making. The yeast used is Saccharomyces cerevisiae and feeds on the sugar present in the dough of bread that produces a gas carbon dioxide. The gas causes the dough to expand. Other yeasts used in the brewing beer. They ferment the sugar present in malted barley that produces alcohol.
Thus, the correct answer is option C. i.e., bread and beer.

Note:
Baking and processing of alcohol are the two primary uses of yeast in the food industries. There are three forms of yeast i.e., compressed yeast, active dry yeast and instant yeast. Yeast ferment the sugar present in the food material.