Description_x000D_ Application_x000D_ Patulin is a mycotoxin produced by a variety of molds, such as, Aspergillus and Penicillium. It is commonly found in apples. It is used as an inhibitor of potassium uptake and as an inducer of ion flux across cell membranes, potentially involving Na+-K+ dependent ATPase and to induce intra- and intermolecular protein crosslinking. It is used to study patulin contamination of bottled wine, DNA-damaging activity of patulin in Escherichia coli, and molecular cloning and functional characterization of two CYP619 cytochrome P450s involved in biosynthesis of patulin in Aspergillus clavatus._x000D_ Packaging_x000D_ 5, 10, 25 mg in glass bottle_x000D_ Biochem/physiol Actions_x000D_ Patulin is genotoxic and may be carcinogenic._x000D_ Other Notes_x000D_ Keep container tightly closed in a dry and well-ventilated place.