Enzyme production by soilborne fungal strains of Aspergillus niger isolated from different localities affected by mining

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F21%3A10248597" target="_blank" >RIV/61989100:27350/21:10248597 - isvavai.cz</a>

Result on the web

<a href="https://iopscience.iop.org/article/10.1088/1755-1315/900/1/012027/pdf" target="_blank" >https://iopscience.iop.org/article/10.1088/1755-1315/900/1/012027/pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1755-1315/900/1/012027" target="_blank" >10.1088/1755-1315/900/1/012027</a>

Result language

angličtina

Original language name

Enzyme production by soilborne fungal strains of Aspergillus niger isolated from different localities affected by mining

Original language description

The research focused on the enzyme production/activity of sixteen Aspergillus niger strains isolated from different localities. The soils vary mainly in their pH value, which ranges from an ultra-acidic (&lt; 3.5) to a very strongly alkaline (&gt; 9.0) environment. Contamination caused by several centuries of mining activities at old mining sites persists at all the localities. The concentrations of toxic elements, such as As, Sb, Zn, Cu and Pb, very often exceed the common limit values. Presence of toxic elements in contaminated sites may affect microscopic fungi and cause changes of their physiology, including the production of different metabolites, such as enzymes. Production of esterase, cellulase, lipase and protease was investigated. Changes in physiological properties, such as the growth and enzymatic activity of the sixteen A. niger wild type strains, were determined. Considerable differences were recorded in the size of the colonies also within strains cultivated on the same nutrient medium. The control strain from locality Gabčíkovo formed the smallest colonies when tracking LA, EA and PA compared with the other strains. Lipase production was determined for several strains at different intensities and was highest in the strain isolated from the uncontaminated locality Gabčíkovo. The enzymatic activity of the other strains isolated from contaminated sites was very low. The achieved results confirmed the direct influence of environmental factors on the physiological properties of the studied strains of Aspergillus niger.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20703 - Mining and mineral processing

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

IOP Conference Series: Earth and Environmental Science. Volume 900

ISBN

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ISSN

1755-1307

e-ISSN

1755-1315

Number of pages

7

Pages from-to

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Publisher name

IOP Publishing

Place of publication

Bristol

Event location

Ostrava

Event date

Nov 25, 2021

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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