20.(8.0) What is the principle of industrial fermentation to produce citric acid and the strains used?

Preparation technology of strain. Almost all industrial production uses Aspergillus Niger as the production strain. Aspergillus Niger has high acid production and high conversion rate. And can utilize various carbon sources, and is the best strain for producing citric acid. Brief Introduction of Citric Acid Citric acid, also known as citric acid, with the molecular formula of C6H8O7 (anhydrate), is an organic acid with a large output in the world. Mainly used in food, medicine, chemical industry, electronics, textile, petroleum and other industries.