Biotransformation of tryptophan to tryptamine and 3-methyl-indole by Psilocybe coprophila was performed. On the other hand, Aspergillus niger was able to transform tryptophan to 5-hydroxy-tryptophan. P. coprophila biotransformed 5-hydroxy-tryptophan to 5-hydroxytryptamine. These results prove once more that fungi are good tools to establish hydroxyindole derivatives.

Spore-bearing aerobic bacteria' capable of producing striking black pigments have been known since the early reports of Gorini (1896) on "Bacillus lactis-niger" and of Biel (1896) and Lunt (1896) on "Bacillus mesentericus-niger." Although these types have become established in the bacteriological literature under the respective binomial designations of Bacillus niger (Migula, 1900) and Bacillus...

BACKGROUND AND OBJECTIVES To find antagonistic bacteria with potential antifungal activity against some pathogenic fungi, including Aspergillus niger, A. flavus, Fusarium moniliforme and Penicillium marneffei, a total of 148 agricultural soil samples from different sites of Tehran were examined. MATERIALS AND METHODS Antagonistic soils were selected by screening against A. niger on glucose-ye...

<p><em>Bioethanol is an alternative energy that starting to be needed, along with the depletion of petroleum reserves. Bioethanol can obtained from various wastes, including palm oil trunk waste which contains 86.03% cellulose. The purpose this study was determine production bioethanol by treatment crude enzymes Trichoderma reesei and Aspergillus niger. This research experimental us...

Aspergillus niger is a member of the genus Aspergillus which includes a set of fungi that are generally considered asexual, although perfect forms (forms that reproduce sexually) have been found. Aspergilli are ubiquitous in nature. They are geographically widely distributed and have been observed in a broad range of habitats because they can colonize a wide variety of substrates. Aspergillus n...

The antimicrobial effects of ozonated water in a recirculating concurrent reactor were evaluated against four gram-positive and four gram-negative bacteria, two yeasts, and spores of Aspergillus niger. More than 5 log units each of Salmonella typhimurium and Escherichia coli cells were killed instantaneously in ozonated water with or without addition of 20 ppm of soluble starch (SS). In ozonate...

in this study, urease production was investigated among thirteen strains of aspergillus niger seven strains isolated from soils of semnan province in iran and six strains obtained from persian type culture collection (ptcc). the enzyme production was screened in two submerged media quantitatively. the registered ptcc 5011 and the native s31 strains showed more urease production than the other e...

Different engineered organisms have been used to produce L-lactate. Poor yields of lactate at low pH and expensive downstream processing remain as bottlenecks. Aspergillus niger is a prolific citrate producer and a remarkably acid tolerant fungus. Neither a functional lactate dehydrogenase (LDH) from nor lactate production by A. niger is reported. Its genome was also investigated for the presen...

CONTEXT There has been a steady rise in Nigeria's HIV/AIDS burden since the first sero-prevalence survey in 1991. Nigeria's economy is mainly dependent on oil that comes from the Niger Delta Region. The majority of the people of the Niger delta region depend on fishing and farming for livelihood. Years of oil exploration activities with frequent oil spillages have led to severe environmental de...