VINEGAR AND CITRIC ACID QUIZ

anaerobic fermentation

aerobic fermentation

anaerobic fermentation followed by aerobic fermentation

aerobic fermentation followed by anaerobic fermentation

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

H2SO4

None of these

HCl

HNO3

Saccharomyces cerevisiae

Aspergillus niger

Lactobacillus bulgaricus

Streptococcus lactis

4

6

5

3

ale

malted grain

fruit juices

ethanol

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

Ammonium salt

Urea

Both (a) and (b)

Peptone

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)

Lactobacillus

Gluconobacter

both (a) and (b)

Acetobacter