In the literature several contradictionary results have been published on the aflatoxin formation at temperatures below 10 degrees C. Therefore experiments with pastes made from milk and cheese powder artificially contaminated with Aspergillus parasiticus, were performed at temperatures of 1 degree C, 5 degrees C, and 10 degrees C for 28 days at a relative humidity of 90--95%. Even at 1 degree C, the aflatoxins B1, B2, G1, G2, and M1 could be determined quantitatively. The lactose content did not have a significant influence on the aflatoxin values. Even storage of cheese (camembert and cottage cheese) in a 10% salt solution did not inhibit aflatoxin formation at 20 degrees C.
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