Question: 177. Which of the following microbes is NOT involved in the preparation of household products?
A. Aspergillus niger
B. Lactobacillus
C. Trichoderma polysporum
D. Saccharomyces cerevisiae
E. Propionibacterium sharmanii
Choose the correct answer from the options given below:
(1) A and B only
(2) A and C only
(3) C and D only
(4) C and E only
Answer: Option (2)
Explanation:
Household products include curd, bread, idli, dosa, and alcoholic beverages prepared using microbes.
Lactobacillus is used in the preparation of curd.
Saccharomyces cerevisiae is used in baking and fermentation of alcoholic beverages.
Propionibacterium sharmanii is used in the production of Swiss cheese.
Aspergillus niger is mainly used for industrial production of citric acid and not for household products.
Trichoderma polysporum is used for the production of cyclosporin A, an immunosuppressive drug, and not for household products.
Therefore, Aspergillus niger and Trichoderma polysporum are not involved in the preparation of household products.
Hence, the correct answer is Option (2).