Question

Commercial source of manufacture of citric acid is
A) Aspergillus
B) Citrus fruits
C) Bacteria
D) Penicillium

Answer 1

Citric acid is chemically termed as 2-hydroxy-1,2, 3-propantetricar-boxylic acid. Commonly the citric acid performs the function of additive in food, cleaning agents, and nutritional supplements. It can be extracted by natural means or by commercial means.

Complete answer:
Citric acid is an odourless that is no smell and colourless substance. Due to its acidic, sour-tasting nature, citric acid is used as a flavouring and preserving agent. Due to its ability to disinfectant against viruses and bacteria, it is helpful to stabilize or preserve bacteria. Not only in lemons, but citric acid is also occurring in limes, oranges, grapefruits, tangerines, and pomelos, etc., in large amounts.
Now let us find solution from given options
(A) Aspergillus : Aspergillus is a member of mold subtly. The largest use of Aspergillus Niger, for the most part, is as the major source of citric acid in a major way.
(B) Citrus fruits : Lemon is considered as citrus fruit as it shows presence of citric acid in the lemon. The good natural sources of citric acid are lemon juice and lime juice. It is due to the occurrence of citric acid in the substance that gives their tart, sour taste.
(С) Bacteria : These microorganisms do not produce citric acid but they are helpful in many other activities such as petroleum production.
(D) Penicillium : It is a kind of fungi. It is used commonly as a source of antibiotics to treat bacterial disease.

Hence the correct answer is option ‘A’ i.e, Aspergillus.

Note: In biochemistry, in the citric acid cycle, citric acid necessarily is an intermediate, which occurs in the metabolism of all aerobic organisms, which mostly shows that in biochemistry, it is an intermediate in the citric acid cycle, which takes place in the metabolism of all aerobic organisms.