Question

Vinegar is produced by

• A. Two step process first fermentation of sugar by Yeast, second fermentation of ethyl alcohol by acetic acid bacteria
• B. Fermentation of sugar by Lactobacillus
• C. Fermentation of sugar by Aspergillus
• D. Fermentation of sugar by Saccharomyces boulardii

Answer 1

Answer: (A)

Two step process first fermentation of sugar by Yeast, second fermentation of ethyl alcohol by acetic acid bacteria

• Vinegar is made by fermentation process that takes place in presence of yeast and Acetobacter.
• Sugar or carbohydrate containing compounds are used in production of vinegar in which yeast is added that produces enzymes which convert sugar to alcohol. This is the first step of the fermentation process which is used in production of many alcoholic beverages like wine, beer etc.
• second step is where the bacteria Acetobacter is used to convert Ethyl alcohol into acetic acid by the process of fermentation.
• So the correct answer is 'Two step process first fermentation of sugar by Yeast, second fermentation of ethyl alcohol by acetic acid bacteria'