Question

Citric acid used in the production of beverages, toffees, chocolates is obtained by fermentation of _______ by Aspergillus niger.

• A. Wheat
• B. Sugar molasses
• C. Rice
• D. Coffee nuts

Answer 1

The correct option is B Sugar molasses

Answer is option B i.e. "Sugar molasses"
Citric acid production is by solid state fermentation. Submerged fermentation is the process which is used for the production of citric acid. The substrate or media used for citric acid production is carbohydrate, mainly sugar molasses along with starch.