Ochratoxin A, B, and C are mycotoxins produced by some Aspergillus species and Penicillium species, like A. ochraceus or P. viridicatum, with ochratoxin A as the most prevalent and relevant fungal toxin of this group.
Ochratoxin A is known to occur in commodities like cereals, coffee, dried fruit and red wine. It is considered a human carcinogen and is of special interest as it can be accumulated in the meat of animals. Thus meat and meat products can be contaminated with this toxin. Exposure to ochratoxins through diet can have can acute toxicity to mammalian kidneys, and may be carcinogenic.