Campuses: Twin Cities | Crookston | Duluth | Morris | Rochester | Other Locations


Home > Indoor Air QualityFungi In BuildingsFungal GlossaryAspergillus flavus

Aspergillus flavus

Aspergillus flavus
Click on image for larger view

Health Effects
This fungus is associated with aspergillosis of the lungs (5, 26) and/or disseminated aspergillosis (5). It is occasionally identified as the cause of corneal, otomycotic, and nasoorbital infections (26).

Allergen
It is reported to be allergenic (7).

Growth Indoors
Grows on moldy corn and peanuts, and found in water damaged carpets.

Outdoor Location
Found in warm soil, foods, and dairy products (5).

Potential Toxin Production
Some strains are capable of producing a group of mycotoxins in the aflatoxin group. Aflatoxins are known animal carcinogens. There is limited evidence to sugest that this toxin is a human carcinogen. The toxin is poisonous to humans by ingestion. It may also result in occupational disease via inhalation (27). Experiments have indicated that it is teratogenic and mutagenic (20). It is toxic to the liver (1, 5, 27). The production of the fungal toxin in dependent on the growth conditions and the substrate used as a food source.

Spore Size
Conidia dimensions 3-6 microns (5) or 3-5 microns (26).

Water Activity
0.78 (5).