Which bacteria is prevalent in soil and can contaminate grains and vegetables?

Bacillus cereus is a type of bacteria that is commonly found in soil, as well as in a variety of other environments including plants. This bacterium has the ability to form spores, which allows it to survive in harsh conditions. When it contaminates grains and vegetables, it can lead to foodborne illnesses. The spores can survive cooking processes and, under favorable conditions, can germinate into active bacteria that produce toxins. These toxins are responsible for the gastrointestinal illnesses associated with Bacillus cereus, particularly when foods are improperly stored or kept warm for extended periods, allowing the bacteria to grow.

Recognizing Bacillus cereus as a significant concern in the contamination of grains and vegetables underlines the importance of proper food handling practices, including thorough cooking and safe storage, to prevent foodborne illness. Other bacteria listed, while also relevant in food safety, do not primarily originate from soil or have the same level of association with grains and vegetables as Bacillus cereus.