University Przyrodniczy blinie

Lublin, Poland

University Przyrodniczy blinie

Lublin, Poland
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Jarosz L.,University Przyrodniczy blinie | Gradzki Z.,University Przyrodniczy blinie | Kalinowski M.,University Przyrodniczy blinie
Medycyna Weterynaryjna | Year: 2014

T. pyogenes belongs to Gram-positive, facultative anaerobic, pleomorphic, non-spore forming microorganisms, currently classified as a representative of the genus Trueperella. Species from this genus have been separated from Arcanobacterium to constitute a new taxonomic unit. The primary basis for the reclassification of these microorganisms was provided by the results of investigations concerning the presence and types of isoprenoid quinones in the bacterial cell wall. Biochemical studies were subsequently extended to include the analyses of the 16S rRNA gene sequence, the peptidoglycan structure, the G+C content in the DNA strand, the profile of lipid acids, the cell wall sugar composition, the type of muramyl acyl groups, the polar lipid profile, and the menaquinone composition. Owing to a variety of virulence factors, T. pyogenes is able to colonise many tissues, causing clinical symptoms in various organs and systems. The main virulence factor in T. pyogenes is pyolysin (PLO), an intracellular toxin with cytolytic activity against various types of cells, particularly neutrophils and macrophages. The microorganism also exhibits the ability to adhere to host cells, which ensures its persistence and survival on the mucous membrane surface. The main role in the adhesion process of T. pyogenes is played by the neuraminidases NanH and NanP. Additionally, with their ability to attach to the components of the extracellular matrix (ECM)of the host cell, surface proteins also serve as an adhesion factor. Fimbriae are an important virulence factor of T. pyogenes. The function of the hitherto recognized fimbrial proteins FimB, FimA, and StrA consists in facilitating bacterial penetration through the cell membrane. During infections caused by T. pyogenes a characteristic bacterial growth is observed, known as biofilm formation, which results in resistance to antibacterial agents and mechanisms of anti-infective host immune response, including phagocytosis. Virulence factors of T. pyogenes also include specific calcium-dependent proteins exhibiting proteolytic activity, which play a significant role in the infectious process and tissue damage, microbial escape from the host's immune defence, and the modulation of the immune system during infectious and inflammatory processes. The identification of the types and mechanisms of action of individual virulence factors of T. pyogenes at the molecular level will provide a basis for the development of a rational veterinary medical strategy for the treatment of animals infected with these microorganisms.

Chobotow J.,University Marii Curie Skiodowskiej blinie | Strachecka A.,University Marii Curie Skiodowskiej blinie | Strachecka A.,University Przyrodniczy blinie
Medycyna Weterynaryjna | Year: 2013

Insect fat body is a specific tissue, the role of which is not limited to the storage of energy resources in the form of fat and glycogen. It is also a site in the body where numerous metabolic processes occur. Moreover, it plays a role in detoxification, as well as being a precursor of the synthesis of egg yolk. The fat body is also responsible for magnetoreception and the immune response. It is a heterogeneous structure and exhibits regional differences that can be distinguished morphologically. Its functions can vary at different stages of the insect life.

Kucharek M.,University Przyrodniczy blinie | Janas P.,University Przyrodniczy blinie
Polimery/Polymers | Year: 2015

The present article describes a method of obtaining xanthan - based edible films with addition of various amounts of glycerin and carob flour (LBG) as well as the strength tests of the produced multicomponent films. The breaking strength, nominal elongation and resistance to water vapour penetration were determined. On this basis, the effect of the content of particular components on the parameters of the obtained coatings was studied. © by Instytut Chemii Przemysłowej im. prof. Ignacego Mos̈cickiego.

Kordowska-Wiater M.,University Przyrodniczy blinie
Postepy Mikrobiologii | Year: 2011

Yeasts can be used for biocontrol of fungal phytopathogens of plants. Antagonistic strains have been selected from different plant niches. The most effective are Cryptococcus laurentii, Candida sake, C. oleophila, Metschnikowia spp. and yeast-like fungus Aureobasidium pullulans, which are able to reduce or inhibit the growth of fungi such as e.g. Botrytis, Penicillium and Rhizopus causing rots of fruit and vegetables or act on other field phytopathogens. Some yeasts from rhizosphere are able to promote plant growth. Different modes of yeast action have been suggested to be responsible for biological control: competition for nutrients and space on plant organ surfaces, antibiotic production, lytic enzyme (mainly glucanases and chitinases) excretion and induction of plant resistance by specific enzymes and phytohormone production. Since the effectiveness of investigated yeasts is sometimes insufficient, different kinds of biocontrol improvement have been investigated and antagonist mixture, addition of adjuvants, natural substances, mild fungicides or modification of physical agents have been suggested. Formulas of effective biocontrol preparations based on yeasts have been under investigation. Freezing, freeze-drying and vacuum-drying have been proposed to be the best methods of yeasts stabilization. High viability, stability, efficiency of cells and safety during the storage of products have been the goal of investigations. Some commercial preparations have been registrated e.g. "Shemer" based on Metschnikowia fructicola action, "Candifruit" based on Candida sake which can be used for protection of fruit and vegetables. Nowadays, the importance of this kind of protective products is restricted but in the future there is a chance for propagation of biocontrol yeast formulas.

Sobota A.,University Przyrodniczy blinie | Dobosz M.,University Przyrodniczy blinie
Zywnosc. Nauka. Technologia. Jakosc/Food. Science Technology. Quality | Year: 2010

The objective of the study was to determine the chemical composition, the physical properties, and the cooking quality of commercially available whole grain pasta of wheat, spelt, and rye. In the tested assortments of pasta, there were determined the contents of protein, ash, total dietary fibre including soluble and insoluble fractions, and acid detergent fibre including cellulose and lignin. The water solubility index (WSI) and water absorption index (WAI) were also analyzed. The minimal cooking time for pasta was determined, as were the cooking losses of dry matter and the coefficient of weight increase after cooking. The whole-wheat pasta was characterized by the highest content of protein. The content of protein was about 16 % d.m. in two of four assortments of the whole-wheat pasta. The lowest protein content, ranging from 6.6 to 7.3 % d.m., was reported in the rye pasta. The ash content in the whole grain pasta was different and depended on the kind and type of flour used to produce pasta. The wheat wholemeal (graham) wheat pasta was characterized by the highest content of ash amounting to 2.3 % d.m. The content of total dietary fibre in the products tested highly varied in a range from 4.73 % d.m. (whole-spelt pasta) to 22.6 % d.m. (wholemeal wheat (graham) pasta). In the whole-wheat and whole-rye pasta, the insoluble fraction of the dietary fibre prevailed, while the soluble fraction of dietary fraction prevailed in the whole-spelt pasta. The whole-rye pasta was characterized by the highest values of cooking losses of dry matter exceeding 10%. The absolute majority of pasta assortments tested should not be classified as wholemeal or whole grain products.

Florek M.,University Przyrodniczy blinie
Medycyna Weterynaryjna | Year: 2014

Currently, the public is concerned not only with the quality of food products, but also with the methods of obtaining these products. For animal products such as milk and meat, the conditions under which animals are reared and slaughtered are of prime importance. The circumstances of slaughter are subject to strict regulations related to animal welfare, food hygiene and safety, as well as working conditions. Humane slaughter regulations aim to minimize anxiety, pain, and distress or suffering at slaughter. Therefore, from the welfare point of view, the basic purpose of stunning is to render the animal unconscious and insensible so that it may not feel pain during slaughter. Current slaughter methods are either conventional (with stunning) or prescribed by religious tradition (without stunning). In most countries that require pre-slaughter stunning, there is dispensation for religious slaughter methods. The religious dispensation is allowed on the basis of human rights, which take precedence over animal welfare in all but a few European countries. Halal (Muslim) and Shechita (Jewish) slaughter methods, the principle religious slaughter techniques, are subject to much debate. With regard to religious slaughter, most objections are raised against the method of neck cutting without prior stunning and, to some extent, against the pre- and post-slaughter handling of animals. It is also suggested that a compromise can be reached between the requirements of religious slaughter and animal welfare, as well as humanitarian principles. This review presents the results of recent research concerning the impact of slaughter methods (conventional vs. religious) on animal welfare, as well as the technological parameters and hygienic criteria of the slaughter process.

This paper presents an assessment of the applicability of satellite remote sensing data to monitor the growth and development of winter oilseed rape in the Lublin region. The study used five vegetation indices (NDVI, EVI, LAI, fPAR and GPP), whose values were derived from Terra environmental satellite and related to the period between 2000 and 2012. Values of the oilseed rape height before winter and the onset of flowering stage based on field observations from the Experimental Stations for Cultivar Testing (COBORU) in Bezek and Cicibór Duzy. The results showed the possibility of using satellite data to predict with a fairly high degree of accuracy both analyzed characteristics of winter oilseed rape. Moreover, based on vegetation indices it has been confirmed that the growth and development of the winter oilseed rape are highly dependent on the course of weather conditions.

Grzywna A.,University Przyrodniczy blinie
Scientific Review Engineering and Environmental Sciences | Year: 2014

The aim of the study is to analyze the size of water retention in the ecosystem of meadows in the drainage facility located in the central part of the Forest Parczew. The paper presents the results achieved so far made on the subject of actions in order to increase the volume of retained water through an increase in tray like and wetlands retention. Assess the possibility of retention and obtained as a result of controlling the outflow of retention specified for the actual hydrological conditions in 2012. In terms of the total amount of spring flooding an area of pooled water may exceed 4.5 million m 3. Due to the lack of damming is impossible to achieve. In the present circumstances you can retentions only 265 thousand m3 of water in the topsoil and over 12 thousand m3 in river courses. In the analyzed catchment water can be impounded in peat bogs and silts in the river Ochozanki and ditches drainage network.

Bartoszek K.,University Przyrodniczy blinie | Wegrzyn A.,University Przyrodniczy blinie
Annales Universitatis Mariae Curie-Sklodowska. Sectio B | Year: 2011

The paper is an attempt to evaluate the associations between vegetation season beginning dates in eastern Poland vs. North Atlantic Oscillation index (NAO) in 1951-2005. Based on average daily air temperature values from meteorological stations in Sandomierz, Włodawa, Felin, and Siedlce, dates of vegetation season beginning were determined by means of Huculak and Makowiec's method. Such determined data were then grouped within five classes, in which appropriately selected standard deviation values were the section boundaries. Years of classes A and B (further related to as early beginning years) as well as D and E (related to as later beginning years) were included in the analysis. Subsequently, the frequency of circulation types was defined (according to Lityński's classification and "Grosswetterlagen" calendar) in the years with definitely earlier and later beginning of vegetation seasons.The study results revealed that North Atlantic Oscillation index explained about 13% to 29% of its variability and basing on this, it can be counted to more important predictors of the vegetation season beginning in eastern Poland. The highest statistical significance of correlation coefficients was found in January, while the co-variability between analyzed characteristics increased from north-east towards south-west. From year to year, the variability of vegetation season beginning dates is associated with the character of the zonal circulation in February and March (increased or decreased share of air masses from western or eastern sectors), as well as longitudinal in April, which was confirmed by analyses using data on prevailing directions of air mass flow achieved from the catalogue of circulation types "Grosswetterlagen" and Lityński's typology.

The principal aim of the dissertation was to analyze the influence of natural environment components on main elements of the cultural landscape. The characteristics of each component were presented separately for the three main types of physiographic regions: mountains, foothills and depressions. Additionally, in selected cases, the analyses of cultural landscape evolution during the last centuries were presented.The research area is located between the Ropa and the Wisłok rivers in Beskid Niski and Doły Jasielsko-Sanockie - two regions in SE part of Poland. Besides, three small drainage basins were chosen for detailed investigation.The main method applied in dissertation, especially in spatial landscape structure research, was a cartographic analysis in GIS system.The elements of the cultural landscape described in this paper were: main communication routes, settlement patterns and dwellings (including spatial settlement distribution, country buildings, sacral landscape, industrial buildings) as well as land use.According to the research carried out in this work, the component of the natural environment which has had the most significant influence on the cultural landscape is land relief, especially land slopes. The impact of this factor is leading on all elements of the cultural landscape. The other factors (surface and ground waters, climate, soils, natural resources) have had a significant influence only on some of the analyzed elements.The elements of the cultural landscape which are most dependent on natural factors are spatial settlement distribution and the pattern of land use. In case of other cultural landscape elements, natural factors play less important but still significant role.The research proved that natural conditionings of the cultural landscape are less clear in the depression area and most clear within foothills and mountain areas, depending on analyzed cultural elements.A decrease of correlation intensity between natural and cultural elements from ancient till present times has been noted in case of nearly all investigated elements of the cultural landscape. This smaller and smaller dependence makes the cultural landscapes less unique and deprived of regional features which often used to result from the characteristics of natural conditions.

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