VINEGAR AND CITRIC ACID QUIZ

fruit juices

ethanol

ale

malted grain

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

All of these

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

acetic acid bacteria tend to ferment at high ethanol concentrations

4

6

5

3

malted grain

ale

ethanol

fruit juices

A. niger floats on the surface of solution

A. niger is used with solid substrate as sweet potato

Fungal mycelium grows through out the solution in a deep tank

both (a) and (b)

Starch hydrolysate

Beet molasses

All of these

Sucrose

A. niger is used with solid substrate as sweet potato

both (a) and (b)

Fungal mycelium grows through out the solution in a deep tank

A. niger floats on the surface of solution

6

3

4

5

ale

fruit juices

malted grain

ethanol

Acetobacter

Gluconobacter

Lactobacillus

both (a) and (b)