Infections due to Aspergillus species cause significant morbidity and mortality. Most are attributed to Aspergillus fumigatus, followed by Aspergillus flavus and Aspergillus terreus. Aspergillus niger is a mould that is rarely reported as a cause of pneumonia. A 72-year-old female with chronic obstructive pulmonary disease and temporal arteritis being treated with steroids long term presented w...

The Niger Delta is located in Southern Nigeria and is Africa’s largest delta, covering about 70,000 square kilometers, and with about one-third of it made up of wetlands, and the third largest world mangrove forests. The Niger Delta is unique in Nigeria because it is the home of Nigeria’s oil industry, with its attendant environmental hazards such as water, land, air pollution, etc. Human activ...

The biotransformation of sucrose to fructooligosaccharides was investigated using the catalytic action of fructosyltransferase originated from marine Aspergillus niger, using whole cell immobilization. The biomass production and enzymatic reaction were carried out in shake flask. A fructosyltransferase enzyme producing fungi locally isolated from sea water from South East cost of India, by usin...

Aspergillus niger has shown production of metal chelating compounds mainly oxalic acid and citric acid. Production of oxalic acid by Aspergillus niger was found maximum in presence of Pb, followed by Cu+Pb and Cu. With increase in concentration of Pb to 50, 100 and 250 mg/L, the production of oxalic acid was increased. Whereas increase in concentration of Cu+Pb and Cu, resulted in decreased pro...

Eleven fungal strains (4 Penicillium commune, 2 Aspergillus niger, 2 Aspergillus rugulosa, Aspergillus terricola, Aspergillus ornatus and Aspergillus fumigatus) were isolated, characterized morphologically and by their capacity to degrade tannins. Aspergillus niger Aa-20 was used as control strain. Several concentrations of hydrolysable tannin (tannic acid) were used as sole carbon source. All ...

Wastewater from swine confined-housing operations contains elevated levels of copper and zinc due to their abundance in feed. These metals may accumulate to phytotoxic levels in some agricultural soils of North Carolina due to land application of treated swine effluent. We evaluated fungi for their ability to remove these metals from wastewater and found Aspergillus niger best suited for this p...

The genus Sphecotypus O. Pickard-Cambridge, 1895, is currently represented by three species: S. birmanicus (Thorell, 1897) from Myanmar and Borneo, S. taprobanicus Simon, 1897 from Sri Lanka, and S. niger (Perty, 1833) from Central and South America. Of the three currently known species, only S. birmanicus has both sexes described, whereas the other two species are known from female specimens o...

The possible use of cotton waste as a carbohydrate source of citric acid production by Aspergillus niger was examined. No citric acid was produced when A. niger was grown on cotton waste as a sole carbon source. In two-stage fermentations, however, mycelium obtained from surface cultures in cotton waste medium yielded more citric acid when transferred to sucrose-containing media than when direc...

The antimicrobial activity of ethanol and chloroform extracts of Pentanema divaricatum Cass. was studied using the conventional disk diffusion method. The extracts' highest antimicrobial activity was observed against Aspergillus niger. Bioassay-guided fractionation of the crude extract by preparative thin layer chromatography (PTLC) showed one antimicrobial fraction which was especially effecti...

In this study we have compared clinical data obtained from 40 reported cases of pulmonary Aspergillus niger intracavitary colonization in the literature and those of our series 23 cases. Additionaly six of our cases have been summarized. Our findings revealed a similar occurrence of male sex, active tuberculosis, diabetes mellitus, systemic oxalosis, and lethal outcome in both groups. In conclu...