Which one of the following is used in the production of citric acid?

Aspergillus niger

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Rhizopus arrhizus

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Acetobacter aceti

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Saccharomyces cerevisiae

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Solution

The correct option is B Aspergillus niger
Aspergillus niger causes black mould of onions and ornamental plants. It is cultured to be used in the industrial production of citric acid as well as gluconic acid.

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Similar questions

Match the following list of bacteria and their commercially important products:

Bacterium Product

(i) Aspergillus niger (a) Lactic acid

(ii) Acetobacter aceti (b) Butyric acid

(iii) Clostridium butylicum (c) Acetic acid

(iv) Lactobacillus (d) Citric acid

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