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Common Toxigenic Fungi Found Indoors Many species in the genera Aspergillus, Penicillium and Cladosporium are known to produce mycotoxins. These three groups of fungi are also very common indoors. Other toxigenic fungi frequently found indoors are Alternaria, Trichoderma, Fusarium, Paecilomtces, Chaetomium and Acremonium. When discussing mycotoxins, species of Aspergillus deserve special attention. Species of Aspergillus produce such well-known toxins as aflatoxins, ochratoxins, and sterigmatoeystin. Aflatoxins that are produced by Aspergillusflavus and Asp. parasiticus are detected in stored peanut and grains. Ochratoxins are produced by many species of Aspergillus as well as Penicillium. These fungi grow well on many common building materials soiled or damaged by water. |