Microbes In Human Welfare Question 7
Question: Germinating barley is employed for preparation of:
Options:
A) Wine
B) Beer
C) Lactic acid
D) Cheese
Show Answer
Answer:
Correct Answer: B
Solution:
Germinating barley seeds are used in the preparation of Beer. Yeast (Saccharomyces cerevicea) acts on the sugars of the barley seeds and converts it to ethanol and $CO_2$.
The $CO_2$ is extracted and stored for later use, while the excess yeast is removed.
The fermented broth, with a large amount of ethanol in it, is now called green beer.
It is allowed to mature and develop a distinct flavor. After maturation, the liquid is filtered, pasteurized and the $CO_2$ that was extracted earlier, is pumped back inside in order to give the beer the fizzy taste. Finally, the finished product is bottled and sold for consumption.
BETA
