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Gut microbiome and colorectal cancer
Tlaskalová-Hogenová, Helena; Klimešová, Klára; Zákostelská, Zuzana; Kverka, Miloslav; Hornová, Michaela; Vannucci, Luca; Štěpánková, Renata; Hudcovic, Tomáš; Kozáková, Hana; Rossmann, Pavel
2014 - English
The work deals with metagenomic approaches that are currently being used to decipher the genome of the microbiota (microbiome), and, in parallel, functional studies are being performed to analyze the effects of microbiota on the host.
Keywords:
gut; colorectal; cancer
Available at various institutes of the ASCR
Gut microbiome and colorectal cancer
The work deals with metagenomic approaches that are currently being used to decipher the genome of the microbiota (microbiome), and, in parallel, functional studies are being performed to analyze the ...
BATCH BIOREACTORS: WASTE WATER ENDOCRINE DISRUPTOR BIODEGRADATION BY WHITE ROT FUNGI
Křesinová, Zdena; Cajthaml, Tomáš
2013 - English
Endocrine disruptors (EDs) are members of a broad class of environmental organopollutants which are present in the environment. Due to the widespread presence in the surface water and wastewater, and their negative endocrine disrupting activity even at very low concentration, these EDs have received an increased attention in water quality management and health care. EDs encompass a variety of substances, including mammalian hormones (estrogens, androgens) and anthropogenic chemicals
Keywords:
organopollutants
Available at various institutes of the ASCR
BATCH BIOREACTORS: WASTE WATER ENDOCRINE DISRUPTOR BIODEGRADATION BY WHITE ROT FUNGI
Endocrine disruptors (EDs) are members of a broad class of environmental organopollutants which are present in the environment. Due to the widespread presence in the surface water and wastewater, and ...
TEMPERATURE INFLUENCE ON DESORPTION AND DETERMINATION OF BIOACCESSIBLE PAHS
Čvančarová, Monika; Pokorná, Lenka; Velebová, R.; Najmanová, P.; Cajthaml, Tomáš
2013 - English
Hydrophobic organic pollutants tend to adsorb onto soil particles which can cause a significant decrease in their bioaccessible fractions. Definition of the bioaccessibility is currently not unified; however it represents a part of total PAHs amount which is potentially available for biological processes. It is an important parameter which can be used for prediction of microbial degradation and environmental risk evaluation. This paper studies desorption behavior of PAHs at 20 and 60˚C. The desorption of PAHs from long-term contaminated soils was evaluated using resin Amberlite XAD- 2. A two-phase desorption model was used to calculate the desorption kinetic curves and F fractions which represent bioaccessible amount of PAHs. The results showed that the desorption of PAHs was significantly influenced by temperature. The greatest differences in the desorption behavior were observed at 5–6 ring PAHs. We compared the F fractions and the rate constants of individual PAHs which were determined at 20 and 60˚C. The results were also compared with sequential supercritical fluid extraction which has been already used for prediction of microbial degradation.
Keywords:
pahs
Available at various institutes of the ASCR
TEMPERATURE INFLUENCE ON DESORPTION AND DETERMINATION OF BIOACCESSIBLE PAHS
Hydrophobic organic pollutants tend to adsorb onto soil particles which can cause a significant decrease in their bioaccessible fractions. Definition of the bioaccessibility is currently not unified; ...
ENDOCRINE DISUPTIVE CHEMICALS: MECHANISMS OF WHITE ROT FUNGI BIODEGRADATION
Cajthaml, Tomáš; Křesinová, Zdena; Čvančarová, Monika; Maternová, H.; Filipová, A.
2013 - English
The main aim of this study was to elucidate mechanisms involved in EE2 and other EDs compounds degradation by white rot fungi. Results showed simultaneous involvement of ligninolytic enzymes and cytochrome P-450 in biodegradation. The present results indicate the advantage of utilization of WRF cultures for organopollutants degradation.
Keywords:
biodegradation
Available at various institutes of the ASCR
ENDOCRINE DISUPTIVE CHEMICALS: MECHANISMS OF WHITE ROT FUNGI BIODEGRADATION
The main aim of this study was to elucidate mechanisms involved in EE2 and other EDs compounds degradation by white rot fungi. Results showed simultaneous involvement of ligninolytic enzymes and ...
A NOVEL BIOAUGMENTATION APPROACH IN BIODEGRADATION OF ORGANIC POLLUTANTS IN CONTAMINATED SOIL
Lhotský, O.; Filipová, Alena; Innemanová, P.; Velebová, R.; Cajthaml, Tomáš
2013 - English
Polycyclic aromatic hydrocarbons (PAHs) belong among organic compounds that accumulate in the environment mainly resulting from human activities. Because of their potentially negative effects on human health, methods of their removal from the environment are intensively studied. In this work, a biodegradation method of bioaugmentation based on sequential stepwise mixing of inoculated soil with non inoculated soil was used. The subject of this work was an application of a bacterial consortium on a real contaminated (7399 mg.kg-1 of PAHs) soil. 8 bacterial strains isolated from other contaminated sites were inoculated. DNA was isolated from the samples during the inoculation process and the degradation of PAHs was monitored after 4 months.
Keywords:
soil
Available at various institutes of the ASCR
A NOVEL BIOAUGMENTATION APPROACH IN BIODEGRADATION OF ORGANIC POLLUTANTS IN CONTAMINATED SOIL
Polycyclic aromatic hydrocarbons (PAHs) belong among organic compounds that accumulate in the environment mainly resulting from human activities. Because of their potentially negative effects on human ...
Microalgae Chlorella sp. as an Alternative Source of Fermentable Sugars
Maršálková, B.; Širmerová, M.; Kuřec, M.; Brányik, T.; Brányiková, Irena; Melzoch, K.; Zachleder, Vilém
2010 - English
The aim of this work was to optimize the enzymatic hydrolysis of starch originating from microalgae (34.0 +/- 1.2% wt. starch in the dry algal biomass) grown on flue gas from waste incineration plant and to study the influence cell disintegration method on the yield of hydrolysis. Apart from the starch, the possibility of cellulose usage from microalgae cell wall as a further source of fermentable sugars was studied and preliminary results are presented.
Keywords:
Flue-gas; Biofuels; Photobioredactor
Available at various institutes of the ASCR
Microalgae Chlorella sp. as an Alternative Source of Fermentable Sugars
The aim of this work was to optimize the enzymatic hydrolysis of starch originating from microalgae (34.0 +/- 1.2% wt. starch in the dry algal biomass) grown on flue gas from waste incineration plant ...
Imunomodulační efekt bakteriálního lyzátu Lactobacillus Casei DN 1140001 na vznik a vývoj experimentálně vyvolaného střevního zánětu
Zákostelská, Zuzana; Kverka, Miloslav; Rossmann, Pavel; Klimešová, Klára; Mrázek, Jakub; Kopečný, Jan; Tlaskalová-Hogenová, Helena
2010 - Czech
Lactobacillus casei DN 114001 patří mezi jedno z nejvíce studovaných probiotik současnosti. Cílem této práce bylo zjistit, zda frakce izolované z tohoto probiotika dokáží zmírnit průběh střevního zánětu. Lactobacillus casei DN 114 001 belongs to one of the most studied probiotics today. The aim of this study was to determine whether this fraction isolated from probiotics can alleviate the course of intestinal inflammation
Keywords:
probiotics
Available at various institutes of the ASCR
Imunomodulační efekt bakteriálního lyzátu Lactobacillus Casei DN 1140001 na vznik a vývoj experimentálně vyvolaného střevního zánětu
Lactobacillus casei DN 114001 patří mezi jedno z nejvíce studovaných probiotik současnosti. Cílem této práce bylo zjistit, zda frakce izolované z tohoto probiotika dokáží zmírnit průběh střevního ...
Litter decomposition in a primary succession chronosequence on brown coal mine deposits
Urbanová, Michaela; Valášková, Vendula; Šnajdr, Jaroslav; Baldrian, Petr
2009 - English
Litter decomposition in a primary succession chronosequence on brown coal mine deposits varies along with the successional age of the site
Keywords:
soil; enzyme; succesion
Available at various institutes of the ASCR
Litter decomposition in a primary succession chronosequence on brown coal mine deposits
Litter decomposition in a primary succession chronosequence on brown coal mine deposits varies along with the successional age of the site
Fungal community and enzyme activities in topsoil layers of Quercus petraea forest: how important is the seasonality?
Voříšková, Jana; Valášková, Vendula; Baldrian, Petr
2009 - English
The analysis of fungal community composition and enzyme activities in topsoil layers of a Quercus petraea forest show that seasonality is an important factor affecting community composition
Keywords:
soil; enzyme; litter
Available at various institutes of the ASCR
Fungal community and enzyme activities in topsoil layers of Quercus petraea forest: how important is the seasonality?
The analysis of fungal community composition and enzyme activities in topsoil layers of a Quercus petraea forest show that seasonality is an important factor affecting community composition
Production of Enzymes by Fungal Colonies in Soils: A Laboratory Study
Šnajdr, Jaroslav; Popelářová, Petra; Baadri, S.; Alawi, A.; Boddy, L.; Baldrian, Petr
2009 - English
Production of enzymes by fungal colonies in soils is affected by mycelium age and the presence or absence of interspecific mycelial interactions
Keywords:
soil; enzyme; interaction
Available at various institutes of the ASCR
Production of Enzymes by Fungal Colonies in Soils: A Laboratory Study
Production of enzymes by fungal colonies in soils is affected by mycelium age and the presence or absence of interspecific mycelial interactions
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