A study found two mycotoxins in some packages of grated Grana Padano. Specifically, the paper found ochratoxin and sterigmatocystin, both produced by microscopic molds. The former was found in 48.6% of the cases analysed, while the latter was present in 94.4% of the packs of grated “grana” type cheeses sold in supermarkets. These would be small but significant quantities.
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