Aflatoxins B1 and G1 solubility in standard solutions and stability during cold storage

In the present work we study the use of different solvents to store aflatoxins B₁ and G₁ standard solutions. We have obtained significant differences between aflatoxin B₁ and G₁ In ethyl acetate, methanol and water, with aflatoxin G₁ being less stable. We recommend chloroform as the election solvent to store the aflatoxin solutions. The fact that aflatoxins are highly stable in water may have a potential use in experiments of biological activity.