Aflatoxin-producing strains of Aspergillus flavus isolated from cheese

Contamination by fungi of the genus Aspergillus with special reference to the possible detection of aflatoxin-producing strains of Aspergillus flavus was studied in 52 samples of commercial cheeses made with different types of milk (8 of cow's milk, 12 of ewe's milk, 13 of goat's milk, and 19 of milk mixtures of various species: cow, ewe, and goat) produced in southern Spain. The frequency of appearance of various species of Aspergillus, A. glaucus, A. niger, A. nidulans, A. sulphureus, A. Terreus,and A. flavus, in the different types of cheese was determined. In 4 (2 of goat's milk cheese and 2 of cheeses made with milk from various species) out of 52 samples (7.69%), aflatoxin-producing strains of A. flavus were detected.