Out of 15 Aspergillus fumigatus strains isolated from the air at waste
landfills, all revealed cellulolytic and lipolytic activities. Eleven out of 15
strains showed very strong cellulolytic properties, as assessed by the
viscosimetric test for endo-1,4-ß-glucanase activity (EGA). None of the examined
strains revealed a well-expressed proteolytic activity. The results suggest that
Aspergillus fumigatus strains developing in stored wastes produce strong
cellulotytic enzymes which need further studies for the potential allergenic
and/or immunotoxic effects of these proteins on exposed workers.