Induction of extracellular glycosidases in filamentous fungi and their potential use in chemotaxonomy.

1999 ◽  
Vol 51 (1) ◽  
pp. 71-87 ◽  
Author(s):  
Zdenka Huňková ◽  
Alena Kubátová ◽  
Lenka Weignerová ◽  
Vladimír Křen
Keyword(s):  
Filamentous Fungi ◽  
Potential Use

scholarly journals Biosynthesis of Silver Nanoparticles Mediated by Entomopathogenic Fungi: Antimicrobial Resistance, Nanopesticides, and Toxicity

Antibiotics ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 852
Author(s):  
Tárcio S. Santos ◽  
Tarcisio M. Silva ◽  
Juliana C. Cardoso ◽  
Ricardo L. C. de Albuquerque-Júnior ◽  
Aleksandra Zielinska ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Filamentous Fungi ◽  
Entomopathogenic Fungi ◽  
Antimicrobial Agents ◽  
Insect Pests ◽  
Insect Control ◽  
Biological Synthesis ◽  
Biological Methods ◽  
Potential Use

Silver nanoparticles are widely used in the biomedical and agri-food fields due to their versatility. The use of biological methods for the synthesis of silver nanoparticles has increased considerably due to their feasibility and high biocompatibility. In general, microorganisms have been widely explored for the production of silver nanoparticles for several applications. The objective of this work was to evaluate the use of entomopathogenic fungi for the biological synthesis of silver nanoparticles, in comparison to the use of other filamentous fungi, and the possibility of using these nanoparticles as antimicrobial agents and for the control of insect pests. In addition, the in vitro methods commonly used to assess the toxicity of these materials are discussed. Several species of filamentous fungi are known to have the ability to form silver nanoparticles, but few studies have been conducted on the potential of entomopathogenic fungi to produce these materials. The investigation of the toxicity of silver nanoparticles is usually carried out in vitro through cytotoxicity/genotoxicity analyses, using well-established methodologies, such as MTT and comet assays, respectively. The use of silver nanoparticles obtained through entomopathogenic fungi against insects is mainly focused on mosquitoes that transmit diseases to humans, with satisfactory results regarding mortality estimates. Entomopathogenic fungi can be employed in the synthesis of silver nanoparticles for potential use in insect control, but there is a need to expand studies on toxicity so to enable their use also in insect control in agriculture.

scholarly journals Filamentous Fungi as Promising Agents for the Biodegradation of Biosolids Compounds

2019 ◽  
Vol 8 (2) ◽  
pp. 35-51
Author(s):  
Laiza Rosa Naves ◽  
Lucas Leonardo Da Silva ◽  
Elida Lucia Da Cunha ◽  
Verediana Fiorentin Rosa De Almeida ◽  
Antônio Sérgio Ferreira De Sá ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Filamentous Fungi ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Carboxymethyl Cellulase ◽  
Biotechnological Processes ◽  
Potential Use

Wastewater Treatment Plant (WWTP) generate pasty wastes, known biosolids, which can be toxic and recalcitrant, motivating studies aiming at their degradation. Filamentous fungi were investigated to degradation of biosolids from a WWTP in the Goiânia, Goiás, Brazil. All grew in the presence of biosolids, being inhibited by increase in concentration, except SXS629, which increased proportionally to the concentration. All grew in the middle with biosolids at the original pH (10.5), although the correction (6.8) provided higher growth. Except SXS90, the others (SXS37, SXS615 and SXS628) degraded the biosolid, growing in medium containing biosolids as the only source of carbon; highlighting SXS628, whose growth in the biosolids exceeded the control. All evaluated isolates synthesize at least two prospected enzymes, especially SXS630 and SXS634, which synthesize all (carboxymethyl cellulase, tannase, polyphenoloxidase). This shows the potential use of these isolates (combined or not) in biotechnological processes aiming at the degradation of biosolids, especially SXS37.

Potential use of filamentous fungi for wastewater sludge treatment

2010 ◽  
Vol 101 (20) ◽  
pp. 7691-7700 ◽  
Author(s):  
T.T. More ◽  
S. Yan ◽  
R.D. Tyagi ◽  
R.Y. Surampalli
Keyword(s):  
Filamentous Fungi ◽  
Wastewater Sludge ◽  
Sludge Treatment ◽  
Potential Use

The growth of mica polytypes as studied by conventional and high-resolution TEM

1983 ◽  
Vol 41 ◽  
pp. 174-177
Author(s):  
A. Baronnet ◽  
M. Amouric
Keyword(s):  
Water Pressure ◽  
Point Of View ◽  
Temperature Fields ◽  
Natural Occurrence ◽  
Growth Mechanisms ◽  
Long Period ◽  
High Resolution Tem ◽  
Layer Stacking ◽  
Experimental Works ◽  
Potential Use

The origin of mica polytypes has long been a challenging problem for crystal- lographers, mineralogists and petrologists. From the petrological point of view, interest in this field arose from the potential use of layer stacking data to furnish further informations about equilibrium and/or kinetic conditions prevailing during the crystallization of the widespread mica-bearing rocks. From the compilation of previous experimental works dealing with the occurrence domains of the various mica "polymorphs" (1Mr, 1M, 2M1, 2M2 and 3T) within water-pressure vs temperature fields, it became clear that most of these modifications should be considered as metastable for a fixed mica species. Furthermore, the natural occurrence of long-period (or complex) polytypes could not be accounted for by phase considerations. This highlighted the need of a more detailed kinetic approach of the problem and, in particular, of the role growth mechanisms of basal faces could play in this crystallographic phenomenon.

An atomic-resolution microscope study of Al contracts on GaAs

1986 ◽  
Vol 44 ◽  
pp. 726-727
Author(s):  
Z. Liliental-Weber ◽  
C. Nelson ◽  
R. Ludeke ◽  
R. Gronsky ◽  
J. Washburn
Keyword(s):  
High Speed ◽  
Schottky Contacts ◽  
Detailed Knowledge ◽  
The Past ◽  
Semiconductor Interfaces ◽  
Deposited Metal ◽  
Microwave Applications ◽  
Free Interfaces ◽  
Potential Use

The properties of metal/semiconductor interfaces have received considerable attention over the past few years, and the Al/GaAs system is of special interest because of its potential use in high-speed logic integrated optics, and microwave applications. For such materials a detailed knowledge of the geometric and electronic structure of the interface is fundamental to an understanding of the electrical properties of the contact. It is well known that the properties of Schottky contacts are established within a few atomic layers of the deposited metal. Therefore surface contamination can play a significant role. A method for fabricating contamination-free interfaces is absolutely necessary for reproducible properties, and molecularbeam epitaxy (MBE) offers such advantages for in-situ metal deposition under UHV conditions

The potential use of short chain peptides in parenteral nutrition

1985 ◽  
Vol 4 ◽  
pp. 116-123 ◽  
Author(s):  
P STEHLE ◽  
S ALBERS ◽  
I AMBERGER ◽  
P PFAENDER ◽  
P FURST
Keyword(s):  
Parenteral Nutrition ◽  
Short Chain ◽  
Potential Use

Anticancer drug discovery from filamentous fungi

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
NH Oberlies ◽  
A Sy ◽  
TN Graf ◽  
DJ Kroll ◽  
Y Nakanishi ◽  
...  
Keyword(s):  
Drug Discovery ◽  
Filamentous Fungi ◽  
Anticancer Drug ◽  
Anticancer Drug Discovery

The search for new antibiotic substances from filamentous fungi

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
KS Svahn ◽  
U Göransson ◽  
A Strömstedt ◽  
H El-Seedi ◽  
L Bohlin ◽  
...  
Keyword(s):  
Filamentous Fungi

Instant 99mTc Compounds

1971 ◽  
Vol 10 (03) ◽  
pp. 245-251 ◽  
Author(s):  
P. Richards ◽  
W. C. Eckelman
Keyword(s):  
Physical Properties ◽  
High Purity ◽  
Analytical Techniques ◽  
Full Potential ◽  
Labeled Compounds ◽  
Ph Adjustment ◽  
One Step ◽  
Stannous Ion ◽  
99Mtc Radiopharmaceuticals ◽  
Potential Use

SummaryThe full potential use of technetium has not been achieved despite its ideal physical properties, dosimetry and availability because of the complex preparations required for 99mTc radiopharmaceuticals. One of the goals of our work is to develop techniques for the preparation of high-purity 99mTc compounds which can be easily prepared, ideally by adding pertechnetate to a prepared solution.The use of stannous ion as reducing agent for technetium makes it possible to obtain such one-step, high-purity products. All non-radioactive components can be premixed in a single vial before addition of the radioactive pertechnetate. No final pH adjustment, further chemical manipulation or purification is required.Procedures for two instantly labeled compounds have been developed to date: 99mTc DTPA and 99mTc HSA. The 99mTc DTPA is prepared by adding pertechnetate to a previously prepared solution of stannous ion and CaNa3 DTPA which has been stored at pH 4. The 99mTc HSA is prepared by adding pertechnetate to a solution of stannous ion and HSA. The parametric variations and analytical techniques involved in formulating these procedures are described. It appears that development of kits for other biologically interesting compounds may be possible using similar procedures.

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