Question

Red or bloody bread results from growth of:

• A. Serratia marcescens
• B. Bacillus licheniformis
• C. Pseudomonas species
• D. Endomycopsis

Hint:

Serratia marcescens is a bacterium that produces a red pigment called prodigiosin, which can cause red discoloration, particularly in moist environments like bread.

Answer 1

The Correct Option is A

The red or bloody appearance on bread results from the growth of the bacterium Serratia marcescens, which produces a red pigment called prodigiosin. This bacterium is known to cause the red discoloration on moist surfaces such as bread, especially in warm and humid environments.
- Serratia marcescens: Correct! This bacterium is responsible for the red or bloody appearance on bread due to its production of the red pigment prodigiosin.
- Bacillus licheniformis: This bacterium does not produce a red pigment. It is known for producing other types of compounds but does not cause red discoloration on bread.
- Pseudomonas species: While some species of Pseudomonas can cause discoloration, they typically produce blue or green pigments, not red.
- Endomycopsis: This is a genus of fungi, but it does not typically cause red discoloration on bread.
Thus, the correct answer is (1) Serratia marcescens.