How citric acid is produced

The production method of citric acid is relatively flexible. Fruit extraction, chemical synthesis, microbial fermentation, etc. can all be effectively produced, but microbial fermentation is the most economical and safe method. The selection of bacterial species is also relatively wide, and many species such as Aspergillus niger, Aspergillus clavulatus, Aspergillus wendrichii, Aspergillus fentonii, Aspergillus butadiate, Penicillium citrin, Candida lipolytica, etc. can be used, and there is no special requirement for raw materials. Dependence, as long as citric acid can be produced through microbial metabolism, the price of citric acid is very low, which is also an important basis for its wide application.