What is a characteristic of mycotoxins?

Mycotoxins are naturally occurring toxic compounds produced by certain fungi that can contaminate crops and food supplies. One defining characteristic of mycotoxins is their potential to cause health issues even at low concentrations. This makes option B the correct choice, as it precisely describes the nature of mycotoxins.

Understanding mycotoxins involves recognizing their origins in agricultural products, where they may develop under specific environmental conditions, such as high humidity and temperature. Because they can be harmful in small amounts, their presence in food and feed is a significant concern for both human and animal health. This toxicity can lead to issues such as acute poisoning or long-term health effects, depending on exposure levels.

The other options do not align with the characteristics of mycotoxins. For example, mycotoxins are not synthetic chemicals, nor are they harmless compounds. It is vital for agricultural professionals to be aware of the risks associated with mycotoxins to manage them effectively in crop production and storage.