Fungi can grow and produce mycotoxin during cocoa processing.
Mycotoxins are stable to most food processing and remain in cocoa by-products and chocolate.
There are worldwide reports of mycotoxin occurrence in cocoa products and chocolate, especially ochratoxin A and aflatoxins.
Ochratoxin A is nephrotoxic, while aflatoxins are hepatotoxic and hepatocarcinogenic.
Chocolate is a minor source of ochratoxin A and aflatoxin in diet.