Question

(il) Name the main substrate of fermentation.

(b) Name two types of fermentation.

(c) (i)
Differentiate between alcohol fermentation and lactic acid fermentation.

(i) Give two examples of microorganisms used in fermentation and foods produced by the process.

Answer 1

a) The main substrate of fermentation is glucose.

b) Two types of fermentation are alcohol fermentation and lactic acid fermentation.

c) (i) Alcohol fermentation produces ethanol and carbon dioxide, while lactic acid fermentation produces lactic acid.

(ii) Two examples of microorganisms used in fermentation and foods produced by the process are:

- Saccharomyces cerevisiae, which is used in alcohol fermentation to produce beer, wine, and bread.

- Lactobacillus bulgaricus and Streptococcus thermophilus, which are used in lactic acid fermentation to produce yogurt and cheese.