A good producer of citric acid is

Options

(a) Pseudomonas
(b) Clostridium
(c) Saccharomyces
(d) Aspergillus

Correct Answer:

Aspergillus

Explanation:

Aspergillus niger is a fungus and one of the most common species of the genus Aspergillus. It causes a disease called black mould on certain fruits and vegetables such as grapes, apricots, onions, and peanuts, and is a common contaminant of food.it is widely used in the industrial production of citric acid and a variety of industrial enzymes such as amylases, pectinases, and proteases.