Aspergillus niger


Also found in: Dictionary, Thesaurus, Financial, Encyclopedia, Wikipedia.

As·per·gil·lus ni·ger

a species with black spores, often present in the external auditory meatus but rarely pathogenic; used in the commercial manufacturing of citric and gluconic acids.

Aspergillus niger

A pathogenic species with black spores, frequently present in the external auditory meatus. It may cause pneumonia in immunocompromised patients, and otomycosis. The presence of localized oxalate crystals within necrotic tissue from the external auditory canal suggests the diagnosis.
illustration
See also: Aspergillus
References in periodicals archive ?
Bioconversion of (+)-fenchone to (+)-6-endo-hydroxyfenchone by Aspergillus niger.
Pseudomonas lundensis, Bacillus cereus, Aspergillus niger and Aspergillus flavus were the pathogenic microorganisms included in the study.
Bronchoscopic lung biopsy evidence of calcium oxalate crystals signals Aspergillus niger infection.
and evaluated against both standards and the isolated strains bacteria together with the fungus strain Aspergillus niger using disk diffusion method.
FTIR, IH NMR, and GC-MS analyses confirmed that the product was largely juglone and the extract exhibited very good activity against Aspergillus niger, Paecilomyces variotiL Trametes versicolor, and Gloeophyllum trabeum, but poor activity to Postia placenta and Chaetomium globosum in Petri plate tests.
8 ppm of ozone, while Aspergillus niger and Stachybotrys spp.
The serum antibody precipitants to Aspergillus niger, A fumigatus, and A flavus were negative.
The over-the-counter product Beano, containing [alpha]-galactosidase derived from Aspergillus niger, claims to reduce flatus but does not help, he said.
National Enzyme Company (Forsyth, MO) has patented methods, kits, combinations, and compositions comprising a Aspergillus oryzae protease enzyme, a Bacillus subtilis protease enzyme, and a Aspergillus niger lipase enzyme for treating a digestive disorder in a subject in need thereof.
It has been tested against, among others, Streptococcus faecalis, Salmonella enteritides, Escherichia coli 0157, Staphylococcus aureus (MRSA), Aspergillus niger (black mould) and Listeria monocytogenes.
The resulting residue will be tested against fungal specimens such as Saccharomyces cerevisiae and Aspergillus niger to determine the presence of antifungal activity.
In the May 23 Angewandte Chemie International Edition, Mirkin's team at Northwestern University describes how it cultured spores of the fungus Aspergillus niger in the presence of 13-nm-wide gold particles that aggregated on the fibrous hyphae.