Biotechnology - Vinegar and Citric Acid

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Exercise : Vinegar and Citric Acid - Section 1
  • Vinegar and Citric Acid - Section 1
1.
Vinegar is typically produced in fed batch reactors because
a fed batch reactor can be used to maintain low acetic acid concentrations
a fed batch reactor can be used to maintain low ethanol concentrations
acetic acid bacteria tend to ferment at high ethanol concentrations
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

2.
For the recovery of citric acid after fermentation, Ca(OH)2 is added to the slurry to
precipitate calcium carbonate
precipitate calcium citrate
precipitate calcium phosphate
precipitate calcium sulphate
Answer: Option
Explanation:
No answer description is available. Let's discuss.

3.
Which of the following microorganism is used for the production of citric acid?
Lactobacillus bulgaricus
Saccharomyces cerevisiae
Aspergillus niger
Streptococcus lactis
Answer: Option
Explanation:
No answer description is available. Let's discuss.

4.
Sugar content of the fermentation medium for citric acid is maintained at
10-15%
15-20%
20-25 %
25-30 %
Answer: Option
Explanation:
No answer description is available. Let's discuss.

5.
Spirit vinegar is produced from
fruit juices
malted grain
ethanol
ale
Answer: Option
Explanation:
No answer description is available. Let's discuss.