Wyniki wyszukiwania

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Nutritional and technological value of selected edibile potatoes during storage

100%

Marecek J., Fikselova M., Francakova H.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2008

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tom 530

The aim of this research work was the observation of changes in the qualitative and quantitative parameters of five cultivars of edible potatoes: Agria, Impala, Picasso, Raja, Santé. Samples were stored under regulated conditions in the storage room of the farm Agropartner Plavecké Podhradie, in the branch of Sološnica, Slovakia. Samples were taken three times during the tuber storage. The following parameters were investigated during three years observations: content of dry matter, starch content, total sugars, reducing sugars, nitrates and the content of vitamin C. Considering the dry matter content as the basic stabilizing component, the cv. Santé is the most appropriate for storage. Starch level was the highest in cvs Raja and lowest in Impala. Taking sugar levels into consideration we recommend cv. Agria as the most appropriate and the most stable for storage. This cultivar is the most suitable for technological processing and manufacture of French fries and chips as well. Regarding the nitrate cumulation, all cultivars may be considered to be safe, the determined levels of nitrates were low. The values of vitamin C were lower as compared to the potential levels of this component in edible potatoes. The highest level was in the cv. Agria. This parameter also showed the least fluctuations.

2

Microbial contamination of screenings from wastewater treatment plants

100%

Szostkova M., Vitez T., Marecek J., Losak T.

Polish Journal of Environmental Studies

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2012

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tom 21

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nr 6

Screenings represent the type of waste resulting from the primary treatment of wastewater. Their content varies significantly and it depends on numerous factors. The microbial contamination of screenings has not yet been monitored in detail; therefore, information in this area is either insufficient or unavailable. Our objective was to analyze the indicative microorganisms present in the screenings from wastewater treatment plants. Faecal thermo-tolerant coliform bacteria, coliform bacteria, and enterococci were monitored during microbial analyses. All tested samples proved the presence of the aforementioned microorganisms (in different concentrations). Furthermore, some samples confirmed the presence of Salmonella sp. bacteria, which originate from the faecal solids getting to the trash screens of the wastewater treatment plants together with contaminated water.

3

Przyjazne dla srodowiska biotechnologie w chowie trzody chlewnej

100%

Sychra L., Marecek J., Bialczyk W.

Zeszyty Naukowe Akademii Rolniczej we Wrocławiu. Mechanizacja Rolnictwa

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2000

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tom 05

77-88

4

Carotenes content in carrot roots (Daucus carota l.) as affected by cultivation and storage

100%

Fikselova M., Marecek J., Mellen M.

Vegetable Crops Research Bulletin

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2010

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tom 73

5

Rheological measurements of disintegrated activated sludge

76%

Travnicek P., Vitez T., Junga P., Krcalova E., Sevcikova J., Marecek J., Machal P.

Polish Journal of Environmental Studies

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2013

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tom 22

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nr 4

Our paper deals with the description of the rheological properties of activated sewage sludge before and after disintegration. There is an assumption that disintegrated activated sewage sludge is able to change rheological properties. These changes probably cause the modification of the structure of activated sewage sludge after disintegration. The reason is that during disintegration, cell walls of organisms (from which the activated sewage sludge is composed) are disturbed. Currently there are not published many papers that deal with rheological properties of disintegrated activated sewage sludge. There is therefore no opportunity to confront our assumption with papers of other authors. The sample of activated sewage sludge was collected from aeration tank of the wastewater treatment plant for 10,000 population equivalent (PE). In our work the following rheological properties were described: temperature dependence on viscosity and the shear stress dependence on shear rate. On the basis of measured data Arrhenius mathematical model has been applied. By using this mathematical model the activation energy has been obtained.

6

Comparison of the effectiveness of applications of mineral fertilisers and digestate from a biogas station on yields, content of dry matter and micronutrients in the aboveground biomass of maize (Zea mays L.)

52%

Losak T., Goncalves T. V. F., Musilova L., Zatloukalova A., Fryc J., Vitez T., Vitezova M., Skarpa P., Hlusek J., Marecek J., Wisniowska-Kielian B., Kovacik P.

Zeszyty Naukowe Uniwersytetu Przyrodniczego we Wrocławiu. Rolnictwo

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2013

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tom 106

Ograniczanie wyników

Nutritional and technological value of selected edibile potatoes during storage

Microbial contamination of screenings from wastewater treatment plants

Przyjazne dla srodowiska biotechnologie w chowie trzody chlewnej

Carotenes content in carrot roots (Daucus carota l.) as affected by cultivation and storage

Rheological measurements of disintegrated activated sludge

Comparison of the effectiveness of applications of mineral fertilisers and digestate from a biogas station on yields, content of dry matter and micronutrients in the aboveground biomass of maize (Zea mays L.)