There are more than 20 distinct but structurally related AF compounds but the four most commonly found are known as aflatoxin B1 (AFB1), aflatoxin B2 (AFB2), aflatoxin G1 (AFG1) and aflatoxin G2 (AFG2) (Hernandez-Martínez & Navarro- Blasco, 2010; Tam et al., 2006).