What is a notable feature of listeria bacteria?

Listeria bacteria are notably found in various environments, including soil and water. This characteristic is significant because it highlights the widespread presence of listeria in nature, which can lead to contamination in a variety of food sources, not just those that are raw. Understanding that listeria can thrive in diverse environments emphasizes the importance of proper food handling, storage, and cooking practices to prevent foodborne illness.

In terms of food safety, listeria is particularly concerning because it can survive in refrigerated temperatures, which many other bacteria cannot do. Acknowledging its resilience in various environments helps food handlers implement more effective prevention strategies against contamination.

The other options do not accurately describe the nature of listeria. For instance, while listeria can be found in vegetables, it is not limited to raw produce alone. Heating to 100°C is not sufficient to kill listeria, as it requires cooking at higher temperatures for longer periods. Additionally, listeria grows optimally at cooler temperatures, not just high temperatures, making it critical to maintain appropriate storage conditions.