scholarly journals Bioleaching of Arsenic and Antimony from Mining Waste

2016 ◽  
Vol 24 (1) ◽  
pp. 5-9
Author(s):  
Slavomír Čerňanský ◽  
Alexandra Šimonovičová ◽  
Jana Juhásová ◽  
Milan Semerád
Keyword(s):  
Aspergillus Niger ◽  
Toxic Elements ◽  
Mining Waste ◽  
Fungal Strain

AbstractThis paper is a contribution to quantification of bio-leached arsenic and antimony from mining waste collected from impoundment in Slovinky (Slovakia). Autochtonous fungal strain Aspergillus niger was used in all bioleaching experiments. The contents of arsenic and antimony in two different samples from the impoundment were 294.7 and 328.2 mg.kg−1 As and 225.3 and 285.7 mg.kg−1 Sb, respectively. After 21-day cultivation of Aspergillus niger on such contaminated substrates, this strain was capable to bioleach, bioaccumulate and biovolatilize both toxic elements.

Temperature-stress tolerance of the fungal strain Aspergillus niger 26: physiological and ultrastructural changes

2013 ◽  
Vol 30 (5) ◽  
pp. 1661-1668 ◽  
Author(s):  
Radoslav Abrashev ◽  
Stoyanka Stoitsova ◽  
Ekaterina Krumova ◽  
Svetlana Pashova ◽  
Tsvetelina Paunova-Krasteva ◽  
...  
Keyword(s):  
Aspergillus Niger ◽  
Stress Tolerance ◽  
Temperature Stress ◽  
Fungal Strain ◽  
Ultrastructural Changes

scholarly journals The influence of biocarrier of Aspergillus niger and Trichoderma harzianum toward vegetative growth of sorghum in the field experiment

2020 ◽  
Vol 2 (2) ◽  
pp. 28-34
Author(s):  
Arwan Sugiharto ◽  
Toga Pengihotan Napitupulu ◽  
Made Sudiana
Keyword(s):  
Aspergillus Niger ◽  
Drought Tolerance ◽  
Field Experiment ◽  
Trichoderma Harzianum ◽  
Vegetative Growth ◽  
Soil Microorganisms ◽  
Fungal Strain ◽  
Cereal Crops ◽  
Marginal Land ◽  
Stalk Diameter

Compared to other cereal crops, sorghum has a higher drought tolerance trait. However, efforts are needed to increase the productivity of sorghum, particularly in drought marginal land. One strategy to be implemented is the utilization of soil microorganisms formulated with biocarrier. Therefore, the aim of this study was to evaluate the influence of the fungal strain Aspergillus niger and Trichoderma harzianum formulated with compost and zeolite as biocarrier towards vegetative growth of sorghum. The field experiment was designed as a randomized block designed, factorial pattern with 4 replications. The first factor was selecting biocarrier, namely zeolite, compost, and a mixture of zeolite: compost (1:1). The second factor was the fungal inoculants, A. niger, and T. harzianum. The observed parameter was the growth profile of sorghum during vegetative growth, including stalk diameter and height. The results showed that the type of biocarrier, as well as the fungal strains did influence the growth of sorghum. The highest stalk diameter and height of sorghum were obtained after application of A. niger formulated with a mixture of zeolite: compost (1:1), with 17% and 41.2% higher than control, respectively. This condition shows that a mixture of zeolite and compost is seemingly able to create better micro-ecological conditions for fungal microbes to function effectively. Therefore, our findings suggested the addition of zeolite to compost for the application of biocarrier in the field experiment.

scholarly journals Basic interactions of Aspergillus niger with Se(IV)

2021 ◽  
Vol 9 (2) ◽  
pp. 141-145
Author(s):  
Martin Urík ◽  
Jaroslav Ševc ◽  
Pavol Littera ◽  
Marek Kolenčík ◽  
Slavomír Čerňanský
Keyword(s):  
Aspergillus Niger ◽  
Liquid Medium ◽  
Filamentous Fungus ◽  
Indoor Environment ◽  
Fungal Growth ◽  
Fungal Strain ◽  
Aerobic Conditions ◽  
Negligible Amount ◽  
Total Selenium ◽  
Toxicity Effects

Filamentous fungus Aspergillus niger is commonly found on decaying vegetation or in indoor environment and has a number of uses, including application in bioremediation. Hence, the basic interactions of this common mould with selenite were studied, including biovolatilization, bioaccumulation and toxicity effects of selenite on fungal growth. The fungal strain, originally isolated from noncontaminated soil, was cultivated under aerobic conditions on liquid cultivation media with concentration of Se(IV) 19 or 27 mg.l-1 during 25 days. The fungal growth in the presence of selenite was not inhibited when compared to control, only the sporulation was reduced. The concentration of Se(IV) in liquid medium decreased rapidly within first ten days to 1 mg.l-1. However, according to results from the 25th day of cultivation, the concentration of total selenium in medium did not change significantly and only negligible amount of selenium (less then 1%) was bioaccumulated. That indicates some biotransformation of selenite into other selenium species. During the cultivation, up to 21% of total amount of selenium was transformed into volatile derivatives (biovolatilization) by filamentous fungus A. niger.

Multi-Functional Enzyme Ability of Fungal Strain, Aspergillus niger, Screened from Dump of Pig Waste

2017 ◽  
Vol 30 (special) ◽  
pp. 253
Author(s):  
Sonika Tyagi ◽  
Suman Lata ◽  
Alka Sahrawat ◽  
Purushottum
Keyword(s):  
Aspergillus Niger ◽  
Fungal Strain

scholarly journals Biodegradation of Chlorsulfuron and Metsulfuron-Methyl byAspergillus niger

2002 ◽  
Vol 2 ◽  
pp. 1501-1506 ◽  
Author(s):  
Elisabetta Zanardini ◽  
Marco Negri ◽  
Giovanna Boschin ◽  
Alessandra D'Agostina ◽  
Anna Valle ◽  
...  
Keyword(s):  
Aspergillus Niger ◽  
Pseudomonas Fluorescens ◽  
Soil Fungus ◽  
Fungal Strain ◽  
Chemical Degradation ◽  
Degradative Pathway ◽  
Metsulfuron Methyl ◽  
Intermediate Metabolites ◽  
Acidic Conditions ◽  
Degradation Ability

In this work, investigations were performed under laboratory conditions of the degradation ability by a common soil fungus,Aspergillus niger, toward chlorsulfuron and metsulfuron-methyl. The results were very encouraging (79% for chlorsulfuron and 61% for metsulfuron-methyl of total degradation), especially compared to those registered in our previous studies with a Pseudomonas fluorescens strain B2 (about 21 to 32%). Furthermore, the chemical degradation of the two compounds was studied and two products (1[2-methoxy-benzene-1-sulfonyl]-7-acetyltriuretand 1[2-chlorobenzene-1-sulfonyl]-7-acetyltriuret)were isolated and characterised by hydrolysis in acidic conditions. Our aim in the future will be the identification of intermediate metabolites by HPLC and LC-MS analyses in order to identify the degradative pathway by the fungal strain and to compare this to those obtained by chemical degradation and byP. fluorescens strain.

Distribution of potentially toxic elements in soils surrounding abandoned mining waste located in Taltal, Northern Chile

2021 ◽  
Vol 220 ◽  
pp. 106653 ◽  
Author(s):  
Arturo Reyes ◽  
Jacqueline Cuevas ◽  
Bárbara Fuentes ◽  
Edgardo Fernández ◽  
Wilson Arce ◽  
...  
Keyword(s):  
Toxic Elements ◽  
Potentially Toxic Elements ◽  
Mining Waste ◽  
Northern Chile

scholarly journals Environmental Friendly Production of Amylase from Aspergillus niger EFRL-FC-024 Using Corn Waste as Carbon Source

2021 ◽  
Vol 22 (1) ◽  
pp. 165-171
Author(s):  
Imrana Khushk
Keyword(s):  
Aspergillus Niger ◽  
Sugarcane Bagasse ◽  
Bacterial Species ◽  
Nitrogen Sources ◽  
Fungal Strain ◽  
Environmental Friendly ◽  
Incubation Periods ◽  
Amylase Production ◽  
Important Enzyme

Amylase is an indispensable and industrially important enzyme that hydrolyzes carbohydrates particularly starch into simple sugars. Amylase enzymes have been isolated from various sources such as microbes, animals and plants. However, microorganisms are highly preferred as compared to plants and animal sources. Amylases of fungal origin are highly stable compared to amylases produced by bacterial species. The aim of this study was to investigate the production of extracellular amylase enzyme from Aspergillus niger EFRL-FC-024 using sugarcane bagasse and corn waste as an energy source under submerge fermentation conditions. Primarily, the fungal strain was grown for 6 days using sugarcane bagasse and corn waste, respectively. Mainly, the growth of a microorganism was also evaluated using different pH, temperature and incubation periods. The results revealed maximum amylase production of 1.64 U/mL when A. niger was cultured for 96 h using corn waste. Moreover, addition of different nitrogen sources showed the highest amylase production when peptone was supplemented as a nitrogen source. Finally, the effect of pH indicated maximal concentration of amylase enzyme at pH 6.0. The present study will highly be beneficial to explore the role of fungal strain A. niger in amylase production at Industrial levels.

scholarly journals Studies on biodegradation of crude oil by Aspergillus niger

2009 ◽  
Vol 27 (1) ◽  
pp. 57 ◽  
Author(s):  
Anupama Mittal ◽  
Padma Singh
Keyword(s):  
Aspergillus Niger ◽  
Crude Oil ◽  
Aromatic Hydrocarbons ◽  
Petroleum Hydrocarbon ◽  
Andhra Pradesh ◽  
Fungal Strain ◽  
Production Well ◽  
Initial Value ◽  
Crude Oil Production ◽  
Polycyclic Aromatic

Hydrocarbon degrading microorganisms play a major role in the environment. In the present study crude oil degrading fungal strain Aspergillus niger was isolated from oil contaminated soil near crude oil production well (Lingala) Andhra Pradesh. The rate of reduction in some petroleum hydrocarbon fractions, such as n-alkanes, aromatics, nitrogen, sulfur and oxygen (NSO)-containing compounds and polycyclic aromatic hydrocarbons (PAHs), were monitored by means of gas chromatography. The nC17/Pristine and nC18/Phytane ratios, extrapolated from the GC profiles decreased from the initial value of 2.510 and 7.289 to 0.132 and 0.474 respectively at day 60.

Sign in / Sign up

Export Citation Format

Share Document