A substance added to RTE product intended to suppress or limit the growth of Lm throughout the shelf life of the product is called

• A. Post-lethality exposure
• B. Antimicrobial agent
• C. Antimicrobial process
• D. Post-lethality treatment

Answer: (B)

Controlling Listeria in ready-to-eat foods hinges on adding substances that slow or stop microbial growth throughout the product’s shelf life. This type of substance is called an antimicrobial agent. It’s the actual additive used to inhibit growth, such as certain preservatives or natural compounds that keep Lm in check while the product is stored.

This differs from processing steps like post-lethality exposure or post-lethality treatment, which are actions applied during or after a lethality step rather than ingredients added to the product itself. It also isn’t a term for a processing method or step, but specifically for the substance used to prevent growth. So the best term for the described concept is antimicrobial agent.