Results 21 to 30 of about 5,261 (184)

Ochratoxin A production by strains of Aspergillus niger var. niger [PDF]

Applied and Environmental Microbiology, 1994
In a survey of the occurrence of ochratoxin A (OA)-positive strains isolated from feedstuffs, two of the 19 isolates of Aspergillus niger var. niger that were studied produced OA in 2% yeast extract-15% sucrose broth and in corn cultures. This is the first report of production of OA by this species.
Abarca Salat, Maria Lourdes, Cabañes Sáenz, Francisco Javier, Bragulat, M. Rosa, Castellá, Gemma   +3 more
openaire   +4 more sources

Isolation and Identification of Natural Colorant Producing Soil-Borne Aspergillus niger from Bangladesh and Extraction of the Pigment

Foods, 2021
Natural colorants have been used in several ways throughout human history, such as in food, dyes, pharmaceuticals, cosmetics, and many other products. The study aimed to isolate the natural colorant-producing filamentous fungi Aspergillus niger from soil
Maria Afroz Toma, K H M Nazmul Hussain Nazir, Md. Muket Mahmud, Pravin Mishra, Md. Kowser Ali, Ajran Kabir, Md. Ahosanul Haque Shahid, Mahbubul Pratik Siddique, Md. Abdul Alim   +8 more
doaj   +1 more source

Morphological and Molecular Diversity of Aspergillus From Corn Grain Used as Livestock Feed

Hayati Journal of Biosciences, 2017
The study of Aspergillus from corn grains used as livestock feed is important to ensure the safety of the grains as the occurrence of Aspergillus in the corn grain can give an indication of mycotoxin being produced.
Noor Atiqah Zulkifli, Latiffah Zakaria
doaj   +1 more source

Comparison in antioxidant and antitumor activities of pine polyphenols and its seven biotransformation extracts by fungi [PDF]

PeerJ, 2017
Microbial transformation can strengthen the antioxidant and antitumor activities of polyphenols. Polyphenols contents, antioxidant and antitumor activities of pine polyphenols and its biotransformation extracts by Aspergillus niger, Aspergillus oryzae ...
Hui Li, Zhenyu Wang
doaj   +2 more sources

Metabolism of Dethiobiotin in Aspergillus niger

Journal of Biological Chemistry, 1968
Investigation of the metabolism of d- and dl-dethiobiotin in Aspergillus niger has revealed the following. 14C-5-Methyl-2-oxo-4-imidazolidine-butyric acid (the 2-carbon shorter side chain analogue) and 14C-5-methyl-2-oxo-4-imidazolidine-acetic acid (the 4-carbon shorter side chain analogue) have been characterized following their isolation by charcoal
H C, Li, D B, McCormick, L D, Wright
openaire   +2 more sources

Biosorption potential of lead tolerant fungi isolated from refuse dumpsite soil in Nigeria

Acta Scientiarum: Biological Sciences, 2020
Metals are non-biodegradable and recurrent in the environs. Heavy metals tolerant fungi were isolated from refuse dumpsite soil using pour plate method. These fungi were identified as Aspergillus niger, Penicillium chrysogenum and Rhizomucor sp.
Jeremiah David Bala, Faruk Kuta, Adabara Nasiru, Abdulameen Saheed Adedeji, Adel Ali Saeed Al-Gheethi, Opeyemi Habeeb Fashola   +5 more
doaj   +1 more source

Lysine aminopeptidase of Aspergillus niger.

Microbiology (Reading, England), 2001
Conserved regions within the M1 family of metallo-aminopeptidases have been used to clone a zinc aminopeptidase from the industrially used fungus Aspergillus niger. The derived amino acid sequence of ApsA is highly similar to two yeast zinc aminopeptidases, LAPI and AAPI (53.3 and 50.9% overall similarity, respectively), two members of the M1 family of
Basten, D.E.J.W., Visser, J., Schaap, P.J.   +2 more
openaire   +2 more sources

OPTIMASI KONDISI PURIFIKASI PARSIAL LIPASE Aspergillus niger 65I6 SOLID STATE FERMENTATION (SSF) PADA MEDIUM BUNGKIL JARAK SEBAGAI SUMBER BELAJAR PENGANTAR MIKROBIOLOGI

Bioedukasi: Jurnal Pendidikan Biologi FKIP UM Metro, 2012
Extracellular lipase is an enzyme that catalyzes the hydrolysis reaction of triglycerides into free fatty acids and glycerol and synthesis reaction of esters. Lipase can be produced by microbes include bacteria, fungi and yeasts.
Maulina Nurikasari
doaj   +1 more source

Melanin's Role in Balancing Mechanical Strength and Reproductive Output in Environmentally Stressed Fungal Spores

Advanced Functional Materials, EarlyView.
Melanin content directly controls fungal spore mechanical properties, with pigmented spores achieving rupture forces two orders of magnitude higher than hyaline spores. Environmental stress drives this quantity‐quality tradeoff; stressed species invest energy in melanin‐reinforced, mechanically superior thick‐walled, super‐hydrophobic spores, while ...
Atul Agrawal, Steven E. Naleway
wiley   +1 more source

Photo‐Switchable Molecular Module Programming PET Biodegradation in Aquatic Environments

Advanced Functional Materials, EarlyView.
We address the plastic durability paradox by integrating an itaconic acid–derived pyrrolidone module into polymer backbones. Sunlight in water triggers Norrish Type I ring‐opening and hydrophilization, enabling rapid biodegradation into nontoxic minerals.
Mohammad Asif Ali, Jixin Zheng, Satoshi Wakai, Jie Liu, Hidetaka Nomaki, Misato Tsukatani, Noriyuki Isobe, Jingcheng Sang, Yuriko Aoki, Hideo Okamura, Daisuke Sasaki, Chiaki Ogino, Yuzo Yamazaki, Takashi Nishikaze, Kenji Takada, Maiko K. Okajima, Tatsuo Kaneko   +16 more
wiley   +1 more source