Aspergillus niger

Health Effects

It is a common cause of aspergillosis. Reported to cause skin and pulmonary infections (26), common cause of fungal related ear infections-otomycosis (526).

Growth Indoors

Commonly found on textiles, in soils, grains, fruits, and vegetables (5).  It is commonly found in carpet in buildings with operable windows and infrequent vacuuming.

Spore Size

Conidia dimensions 3.5-5 microns (5) or 4-5 microns (26).

Water Activity

0.77 (5); Optimum >0.97 (22)

Mold Reference Key

Abbreviation Reference
Aw Water Activity (Equilibrium relative humidity/100)
E Paul Ellringer
MAC McGregor Pearce - personal experience
NC Neil Carlson - personal experience
(1-27) Refer to Fungal Reference page

N. Carlson 9/92; Rev. 4/93, 7/93, 9/93, 1/94, 2/94,2/95,4/95, 5/96, 7/96

Aspergillus niger
Aspergillus niger
Aspergillus niger
Aspergillus niger