Question

Which of the following microbes is NOT involved in the preparation of household products?

1. Aspergillus niger
2. Lactobacillus
3. Trichoderma polysporum
4. Saccharomyces cerevisiae
5. Propionibacterium sharmanii

Choose the correct answer from the options given below:

पर्याय

• A and B only

• A and C only

• C and D only

• C and E only

Answer 1

A and C only

Explanation:

1. Aspergillus niger: Not a household product. Used in citric acid production (used in foods).
2. Lactobacillus: used in curd/yogurt preparation.
3. Trichoderma polysporum: NOT used in household products; it’s a fungicide/biocontrol agent.
4. Saccharomyces cerevisiae: baker’s yeast, used in making bread and alcohol.
5. Propionibacterium shermanii: used in cheese production, contributes to the holes in Swiss cheese.