VINEGAR AND CITRIC ACID QUIZ

Alegar is a type of vinegar produced from

malted grain

fruit juices

ethanol

ale

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following microorganism is used for the production of citric acid?

Saccharomyces cerevisiae

Lactobacillus bulgaricus

Aspergillus niger

Streptococcus lactis

TRUE ANSWER : ?
YOUR ANSWER : ?

Which substrate is used in the fermentation of citric acid?

Beet molasses

Starch hydrolysate

All of these

Sucrose

TRUE ANSWER : ?
YOUR ANSWER : ?

Vinegar is typically produced in fed batch reactors because

a fed batch reactor can be used to maintain low acetic acid concentrations

acetic acid bacteria tend to ferment at high ethanol concentrations

All of these

a fed batch reactor can be used to maintain low ethanol concentrations

TRUE ANSWER : ?
YOUR ANSWER : ?

What is the pH of the medium when molasses is used as substrate for the production of citric acid?

6

4

3

5

TRUE ANSWER : ?
YOUR ANSWER : ?

What is the pH of the medium when sucrose is used as substrate for the production of citric acid?

5

3

6

4

TRUE ANSWER : ?
YOUR ANSWER : ?

In submerged process for the fermentation to produce citric acid,

A. niger is used with solid substrate as sweet potato

both (a) and (b)

A. niger floats on the surface of solution

Fungal mycelium grows through out the solution in a deep tank

TRUE ANSWER : ?
YOUR ANSWER : ?

Spirit vinegar is produced from

ale

malted grain

fruit juices

ethanol

TRUE ANSWER : ?
YOUR ANSWER : ?

Cider vinegar is produced from

malted grain

fruit juices

ale

ethanol

TRUE ANSWER : ?
YOUR ANSWER : ?

In liquid surface culture process for the fermentation to produce citric acid,

A. niger floats on the surface of solution

Fungal mycelium grows through out the solution in a deep tank

both (a) and (b)

A. niger is used with solid substrate as sweet potato

TRUE ANSWER : ?
YOUR ANSWER : ?