Fumonisin B2 is primarily known as a mycotoxin produced by certain species of Fusarium fungi, commonly found in corn and other cereal crops. Its main significance lies in its impact on food and feed safety. It is used as a reference standard in analytical testing to detect and quantify fumonisin contamination in agricultural products. Due to its toxicological properties, monitoring Fumonisin B2 levels helps assess risks to human and animal health, particularly liver and kidney toxicity. It is also involved in studies on mycotoxin co-contamination, as it often occurs alongside other fumonisins like FB1 and FB3. Regulatory agencies use data from Fumonisin B2 analysis to set safety limits in food and animal feed.