Topics:
Animal Refresher, Meat Science
Antimicrobial Action of Formaldehyde in Smoke
Phenol acts as bacteriostatic while formaldehyde acts as:
- Bactericidal — Correct Answer
- Bacteriostatic
- Both bacteriostatic and bactericidal
- Fungistatic
Explanation:
Correct Answer: Bactericidal
In wood smoke, Phenol acts as a bacteriostatic agent (inhibits growth), while Formaldehyde acts as a bactericidal agent (kills bacteria outright).
Key Definitions
- Bacteriostatic — inhibits the growth and reproduction of bacteria but does not kill them. Bacteria can resume growth if the agent is removed.
- Bactericidal — kills bacteria irreversibly.
Mnemonics
- Phenol → Pauses bacteria (bacterioSTATIC)
- Formaldehyde → Finishes bacteria (bacterioCIDAL)
Broader Smoke Components Summary
- 50% of smoke = Phenol + Formaldehyde
- Smoke combustion temperature = 300°C (hardwood/sawdust)
- Smoke density measured by: Electric eye / Densitometer
📚 About this Topic — Animal Refresher
This multiple choice question is from Animal Refresher, Meat Science. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Refresher to strengthen your preparation.
