scholarly journals IMPACT OF CORONA DISCHARGE ON ASPERGILLUS NIGER SPORES AND CYATHUS OLLA MYCELIUM GROWTH

2020 ◽  
pp. 185-189
Author(s):  
O.A. Nedybaliuk ◽  
Yu.P. Veremii ◽  
N.V. Tsvyd ◽  
M.M. Sukhomlyn ◽  
V.G. Tyshchenko ◽  
...  
Keyword(s):  
Aspergillus Niger ◽  
Corona Discharge ◽  
Culture Collection ◽  
Ring Electrode ◽  
Control Group ◽  
Metal Ring ◽  
Mycelium Growth ◽  
Discharge Treatment ◽  
National University ◽  
Pure Cultures

The article presents an investigation of the influence of the corona discharge with needle-ring electrode configuration on the efficiency of Aspergillus niger spore germination and Cyathus olla mycelium development. Current-voltage characteristics were measured for different distances between the needle and the metal ring. The plot of the dependence of conductance on voltage was built and the corona discharge breakthrough voltage was determined to be (2.7±0.1) kV. The treatment of Aspergillus niger spores was conducted at different development stages: at the germination stage (corona discharge treatment 1 day after the seeding) and dormant state (corona discharge treatment on the day of seeding). The growth rate of Cyathus olla mycelium in samples treated by corona discharge and in control group samples was investigated. The influence of the corona discharge on the potato dextrose agar growth medium before the seeding of Cyathus olla was studied. The pure cultures were obtained from the Culture Collection of Fungi at Kyiv University (FCKU) at the «Institute of Biology and Medicine» Educational and Scientific Centre of the Taras Shevchenko National University of Kyiv.

scholarly journals Effectiveness of the toxin-degrading strain screening strategy: Deficiency and improvement in screening the gossypol-degrading microorganism Aspergillus niger

2021 ◽  
Author(s):  
Chen Zhang ◽  
Gangqin Shu ◽  
Hui Wang ◽  
Daojie Li ◽  
Yuan Xü ◽  
...  
Keyword(s):  
Aspergillus Niger ◽  
Free Gossypol ◽  
Screening Method ◽  
Screening Strategy ◽  
Gossypol Content ◽  
Control Group ◽  
Total Gossypol ◽  
Screening Strategies ◽  
Free Gossypol Content ◽  
Degrading Microorganism

Abstract The effectiveness of the classic screening strategy was verified, by duplicating and verifying the degradation of gossypol by the Aspergillus niger. It can reduce the free gossypol content through biosorption but has no effect on the total gossypol content and cannot effectively degrade gossypol. And the most interesting thing we found the strain can secrete agarase, utilise agar as carbon source. In this case, that will mislead researchers and lead them to make wrong judgments. That turns out the usual methods of previous screening strategies are not rigorous enough, the classic screening method has defect in screening toxin-degrading strain, so agar control group should be added. In this study, some suggestions are put forward to optimise the same type of experiments and broaden the idea of detoxification by microorganisms and provide reference for screening effective toxin-degrading microorganisms.

Effect of corona discharge treatment on indigo dyed cotton fabric

2008 ◽  
Vol 124 (1) ◽  
pp. 43-47 ◽  
Author(s):  
Shirin Nourbakhsh ◽  
Mohammad Esmail Yazdanshenas
Keyword(s):  
Corona Discharge ◽  
Cotton Fabric ◽  
Discharge Treatment
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