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    Wyświetlanie 1-8 z 8
    Tytuł:
    Assessment of the sea buckthorn growing in urban conditions – the quality of berries and leaves
    Autorzy:
    Nowakowska, M.
    Ochmian, I.
    Mijowska, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/962859.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Opis:
    The sea buckthorn is a plant valued for its berries, used by people and eaten by animals. It is grown in urban areas as an ornamental shrub with berries and leaves. The shrubs are characterised by their high resistance to drought, soil salinity or air pollution. The aim of the research carried out at the University of Technology in Szczecin, in Western Pomerania, was to check the influence of the city’s conditions on the quality of berries: mineral and chemical composition, as well as the content of L-ascorbic acid, nitrites and nitrates in shrubs growing along roads. The content of micro- and macronutrients as well as the colour and Green index of leaves were determined. Soils were characterised by similar and low salinity (0.31-0.41 g kg-1 NaCl). The content of various minerals in leaves varied depending on the test site and it was most often correlated with the soil content of these elements. Leaves collected from shrubs which grew next to a street contained more lead (1.06-1.27) but significantly less cadmium (0.08-0.11 mg kg-1) than berries collected in an orchard (Cd 0.17 and Pb 0.83 mg kg-1). The content of organic constituents in berries varied depending on the site of harvest. At the site beside the road, the study revealed a higher level of soluble solids (11.35%), L-ascorbic acid (2312 mg kg-1), organic acids (10.2 g kg-1) and nitrates (47 mg kg-1). All of the examined berries had a low level of nitrites (0.02-0.07 mg kg-1). It has been demontrated that leaves picked from the Hergo cultivar shrubs were darker (parameter L* - top 47.3), greener – especially at the top (parameter a* -13.1). They also had a higher Green index value than the leaves of shrubs growing beside the road (38.2). There is a high level (-0.81) correlation between the measured a* parameter CIE and Green index (SPAD), The sea buckthorn is perfect for urban areas. It is decorative, resistant to urban conditions and has valuable berries, which do not accumulate harmful constituents (heavy metals, nitrates, nitrites).
    Źródło:
    Journal of Elementology; 2017, 22, 2
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of the sea buckthorn growing in urban conditions – the quality of berries and leaves
    Autorzy:
    Nowakowska, M.
    Ochmian, I.
    Mijowska, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1190137.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Tematy:
    ascorbic acid
    colour
    heavy metals
    Green index
    nitrates
    nitrites
    reflectance
    Opis:
    The sea buckthorn is a plant valued for its berries, used by people and eaten by animals. It is grown in urban areas as an ornamental shrub with berries and leaves. The shrubs are characterised by their high resistance to drought, soil salinity or air pollution. The aim of the research carried out at the University of Technology in Szczecin, in Western Pomerania, was to check the influence of the city’s conditions on the quality of berries: mineral and chemical composition, as well as the content of L-ascorbic acid, nitrites and nitrates in shrubs growing along roads. The content of micro- and macronutrients as well as the colour and Green index of leaves were determined. Soils were characterised by similar and low salinity (0.31-0.41 g kg-1 NaCl). The content of various minerals in leaves varied depending on the test site and it was most often correlated with the soil content of these elements. Leaves collected from shrubs which grew next to a street contained more lead (1.06-1.27) but significantly less cadmium (0.08-0.11 mg kg-1) than berries collected in an orchard (Cd 0.17 and Pb 0.83 mg kg-1). The content of organic constituents in berries varied depending on the site of harvest. At the site beside the road, the study revealed a higher level of soluble solids (11.35%), L-ascorbic acid (2312 mg kg-1), organic acids (10.2 g kg-1) and nitrates (47 mg kg-1). All of the examined berries had a low level of nitrites (0.02-0.07 mg kg-1). It has been demontrated that leaves picked from the Hergo cultivar shrubs were darker (parameter L* - top 47.3), greener – especially at the top (parameter a* -13.1). They also had a higher Green index value than the leaves of shrubs growing beside the road (38.2). There is a high level (-0.81) correlation between the measured a* parameter CIE and Green index (SPAD), The sea buckthorn is perfect for urban areas. It is decorative, resistant to urban conditions and has valuable berries, which do not accumulate harmful constituents (heavy metals, nitrates, nitrites).
    Źródło:
    Journal of Elementology; 2017, 22, 2; 399-409
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of street conditions on sea buckthorn fruit quality and content of micro- and macronutrients in berries and in soil
    Autorzy:
    Nowakowska, M.
    Ochmian, I.
    Mijowska, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/960075.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Opis:
    Sea buckthorn (Hippophaë rhamnoides L.) is grown in urbanized areas owing to its low habitat requirements, resistance to harsh urban conditions and spectacular appearance, especially in autumn and winter when the shrubs produce an abundance of orange berries. The climatic conditions of Szczecin are favourable for the cultivation of sea buckthorn, which can be encountered in various green areas and along streets of this city. Our aim was to identify the influence of street conditions on the content of macro- and micronutrients, also heavy metals, in soil and in berries and on the size and firmness of sea buckthorn fruits. The soils were characterized by similar low salinity (EC 0.31-0.41 mS cm-1).The content of various elements in the soil and berries varied depending on a test site. The soil along a street had a lower nutrient content (P 74.8-98.1; K 99.6-162.7; Mg 38.4-55.1 mg kg-1) than the orchard soil (P 123.3; K 284.7; Mg 72.7 mg kg-1). The heavy metal content in the tested soils (Cd 0.083-0.296; Pb 17.2-31.3 mg kg-1) was found to be much below the limits set in the relevant standards. The content of the tested elements in fruits was most often correlated with their soil content. Berries collected from shrubs which grew on a green strip separating roadway lanes contained much more lead (0.267- -0.383 mg kg-1 DM), but significantly less cadmium (0.032-0.035 mg kg-1 DM) than berries collected in the orchard (Pb 0.231; Cd 0.040 mg kg-1 DM). Regardless of the location where the shrubs grew, the cadmium and lead content fell within the limit range set by the relevant standards. Berries picked from non-varietal shrubs growing along the road were smaller (mass of 100 berries 39-45 g) than berries picked from the cv. Hergo shrubs cultivated in the orchard (mass of 100 berries - 57 g). The highest firmness and resistance to puncture were displayed by the smallest berries harvested along the road at research station 1 and cv. Hergo berries. The soils located along the busy street were not contaminated with heavy metals. Besides, in each case the content of heavy metals in sea buckthorn fruits was much lower than allowed by the standards.
    Źródło:
    Journal of Elementology; 2017, 22, 1
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ przechowywania owoców persymony (Diospyros kaki) w warunkach shelf life na wybrane cechy fizyczne i skład chemiczny
    Effect of storing persimmon (Diospyros kaki) fruits under shelf life conditions on selected physical parameters and chemical composition
    Autorzy:
    Ochmian, I.
    Yordanov, A.
    Mijowska, K.
    Chelpinski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/827417.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Technologów Żywności
    Tematy:
    owoce
    przechowywanie
    warunki przechowywania
    cechy fizyczne
    jakosc owocow
    cechy jakosciowe
    wskazniki jakosci
    jedrnosc
    barwa owocow
    polifenole
    Opis:
    W pracy określono zmiany jakości owoców persymony (Diospyros kaki) w trakcie przechowywania w warunkach shelf life. Oznaczono cechy fizyczne: barwę, jędrność, wskaźniki: wegetacji (NDVI) i antocyjanowy (NAI) oraz skład chemiczny. Określono zależności między wybranymi wskaźnikami w celu opracowania szybkich metod oceny jakości owoców. Badania przeprowadzono w Zachodniopomorskim Uniwersytecie Technologicznym w Szczecinie oraz w Stacji Badawczej Uniwersytetu Rolniczego w Plovdiv (Bułgaria), z której pochodziły owoce pięciu odmian persymony: ‘Sharon’, ‘Moro’, ‘Jiro C24276’, ‘Kaki Tipo’ oraz ‘Hyakume’. Owoce charakteryzowały się zróżnicowanym składem chemicznym i zmienną reakcją na przechowywanie. Podczas przechowywania owoce ciemniały (wartość parametru L* zmniejszyła się z 58,2 do 39,8) i stawały się bardziej czerwone – wartość parametru a* wzrosła z 16,8 do 35,0. Zmniejszała się j ędrność owoców oraz ich odporność na uszkodzenia mechaniczne. Znaczne przyspieszenie zmian wskaźników charakteryzujących dojrzewanie owoców obserwowano po sześciu dniach przechowywania. Po pełnym okresie przechowywania najbardziej jędrne, a zarazem odporne na uszkodzenia, były owoce odmiany ‘Kaki Tipo’. Dobrymi cechami jakościowymi charakteryzowały się owoce persymony odmiany ‘Sharon’, które zawierały: polifenoli – 308 mg GAE kg⁻¹, kwasu L-askorbinowego – 105 mg·kg⁻¹, kwasów ogółem – 7,84 g·kg⁻¹, prowitaminy A – 0,86 mg·kg⁻¹ i witaminy E – 38,1 mg·kg⁻¹. W trakcie przechowywania w owocach zmniejszyła się kwasowość i zawartość kwasu L-askorbinowego, natomiast zwiększyła się zawartość witaminy E. Jędrność (r = -0,82) i barwa owoców (r = -0,82) okazały się istotnie (p = 0,05) skorelowane z indeksem wegetacyjnym NDVI. Istotna (p = 0,05) korelacja wystąpiła także między indeksem antocyjanowym (NAI) i zawartością polifenoli, zarówno na początku okresu przechowywania (r = 0,92) jak i na końcu (r = 0,93). Wykazane zależności potwierdzają możliwość zastosowania metod niedestrukcyjnych do oceny jakości owoców persymony.
    Under the research study, the changes were determined in the quality of persimmon (Diospyros kaki) fruits stored under the shelf life conditions. The following physical parameters were determined: colour, firmness, vegetation index (NDVI), anthocyanins index (NAI), and chemical composition. Also, there were determined the correlations between the selected indices so as to develop rapid methods for assessing the quality of fruits. The research was conducted at the West Pomeranian University of Technology in Szczecin and at the Research Station of the Agricultural University in Plovdiv, Bulgaria, where the fruits of five persimmon cultivars: ‘Sharon’, ‘Moro’, ‘Jiro’, ‘Kaki Tipo’, and ‘Hyakume’ came from. The cultivars were characterized by a varied chemical composition and a variable response to storage. During storage, the fruits became darker (the value of L* parameter decreased from 58.2 to 39.8) and redder (the value of a* parameter increased from 16.8 to 35.0). The firmness of the fruits decreased as did their resistance to mechanical damage. After 6 days of storage, a considerable acceleration was reported of changes in the indices, which characterized the ripening of fruits. The fruits of the ‘Kaki Tipo’ cultivar were the firmest and, at the same time, the most resistant to mechanical damage after the whole storage period. The persimmon fruits of ‘Sharon’ cv. were characterized by good quality parameters and they contained: polyphenols: 308 mg GAE kg⁻¹; L-ascorbic acid: 105 mg kg⁻¹; total acids: 7.84 g kg⁻¹; provitamin A: 0.86 mg·kg⁻¹; and vitamin E: 38.1 mg·kg⁻¹. During storage the acidity level and the content of L-ascorbic acid decreased in the fruits, whereas the content of vitamin E increased. The firmness (r = -0.82) and the colour of fruits (r = - 0.82) turned out to be significantly (p=0.05) correlated with the NDVI vegetation index. A significant (p=0.05) correlation was also reported between the anthocyanic index (NAI) and the content of polyphenols, both at the beginning (r = 0.92) and at the end (r = 0.93) of the storage period. The correlations found confirm the possibility to use non-destructive methods for the assessment of the quality of persimmon fruits.
    Źródło:
    Żywność Nauka Technologia Jakość; 2016, 23, 1
    1425-6959
    Pojawia się w:
    Żywność Nauka Technologia Jakość
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of processing fruit quality of several grape varieties cultivated in climatic conditions of Poland and Bulgaria
    Porównanie jakości owoców przerobowych kilku odmian winorośli uprawianych w warunkach klimatycznych Polski i Bułgarii
    Autorzy:
    Angelov, L.
    Stalev, B.
    Ochmian, I.
    Mijowska, K.
    Chelpinski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/82957.pdf
    Data publikacji:
    2015
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Opis:
    Na przestrzeni wielu lat doświadczeń selekcjonowano odpowiednie odmiany dla danych regionów i doskonalono technologię produkcji wina. Postępujące zmiany klimatu niosą ze sobą zmiany jakości winogron, które w przyszłości będą stanowiły duże wyzwanie dla prowadzenia winnicy (sposobu uprawy, terminów zbiorów i winifikacji). Celem pracy było porównanie jakości kilku odmian owoców winorośli uprawianych w odmiennych warunkach klimatycznych. Materiał doświadczalny pochodził z winnic zlokalizowanych na Nizinie Szczecińskiej w Polsce i z Plovdiv w Bułgarii. W doświadczeniu ujęto trzy odmiany winorośli: Cabernet Sauvignon, Cabernet Franc i Pinot Noir. Ocenie podlegały parametry fizyczne (masa owoców, masa i długość gron, jędrność) i skład chemiczny owoców (ekstrakt, kwasowość, pH, kwas askorbinowy, azotany, indeks antocyjanowy). Analizie poddano również wybarwienie zebranych owoców oraz zmiany barwy moszczu w trakcie maceracji. Warunki klimatyczne stanowiska uprawy miały istotny wpływ na skład chemiczny owoców. Wyższym poziomem ekstraktu i pH oraz niższą kwasowością cechowały się owoce uprawiane w Bułgarii. Niezależnie od miejsca uprawy owoce odmiany Cabernet Sauvignon miały najwyższą zawartość ekstraktu i kwasów organicznych. Sok z winogron zebranych w Bułgarii był ciemniejszy (L*) niż sok z owoców zebranych w Polsce. Natomiast sok z owoców uprawianych w Polsce miał więcej niebieskiego pigmentu (b*). Stwierdzono również, że parametry barwy owoców a* i b* są wysoce skorelowane z indeksem antocyjanowym.
    Wine producers have been working on selecting the most suitable grape variety for specific regions and therefore improving wine production technology for numerous years. Climate changes lead to change in grape quality; in the future these changes will have to be considered by the vineyard owners as they will affect cultivation methods, harvest dates and vinification process. The aim of this paper is to compare the quality of several grape varieties cultivated in different climatic conditions. Research material was collected from vineyards situated in the Szczecin Lowlands (Poland) and Plovdiv (Bulgaria). The study focused on three grape varieties: Cabernet Sauvignon, Cabernet Franc and Pinot Noir. Measured characteristics included contained physical parameters: ruit weight, bunch weight and length and firmness as well as chemical composition: soluble solids, acidity, pH, ascorbic acid and nitrates levels, anthocyanin index. Analysed fruit was also examined in terms of colouration and must colour changes during maceration. Climatic conditions of the crop location had significant influence on the chemical composition of fruits, for example Bulgarian fruit featured higher levels of extract and pH combined with lower acidity. The Cabernet Sauvignon variety, regardless of crop location, had the highest levels of extract and organic acids. The juice obtained from Bulgarian grapes was darker (L*) than the juice from the fruit harvested in Poland. On the other hand, the juice of Polish fruit had more blue pigment (b*). It was also found that a* and b* fruit colour parameters are highly correlated with the anthocyanin index.
    Źródło:
    Folia Pomeranae Universitatis Technologiae Stetinensis. Agricultura, Alimentaria, Piscaria et Zootechnica; 2015, 34
    2081-1284
    Pojawia się w:
    Folia Pomeranae Universitatis Technologiae Stetinensis. Agricultura, Alimentaria, Piscaria et Zootechnica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preliminary study on the influence of UV-C irradiation on microorganism viability and polyphenol compounds content during winemaking of ‘Regent’ red grape cultivar
    Autorzy:
    Mijowska, K.
    Cendrowski, K.
    Grygorcewicz, B.
    Oszmiański, J.
    Nawrotek, P.
    Ochmian, I.
    Zielińska, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/779408.pdf
    Data publikacji:
    2017
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    UV-C
    Oenococcus oeni
    Saccharomyces cerevisiae
    polyphenol compounds
    UPLC-PDA/MS
    Opis:
    In this study, UV-C light was tested as an alternative method to inactivate microorganisms in the must of ‘Regent’ red grape cultivar. The control sample containing the microorganism diluted in a physiological NaCl solution was prepared to take into consideration different conditions of liquids, such as turbidity and colour. Additionally, the changes in the composition of polyphenol compounds in the ‘Regent’ must after UV-C exposure were evaluated. The viability of yeasts (Saccharomyces cerevisiae) and bacteria (Oenococcus oeni) significantly decreased with time; however, the highest decline was noted after the first hour of exposure. The polyphenol compound content was significantly lower after UV-C treatment and this was mainly the result of anthocyanin decomposition. The total content of flavan-3-ols and hydroxycinnamic acids and derivatives increased after irradiation.
    Źródło:
    Polish Journal of Chemical Technology; 2017, 19, 2; 130-137
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reduced graphene oxide and inorganic nanoparticles composites – synthesis and characterization
    Autorzy:
    Onyszko, M.
    Urbaś, K.
    Aleksandrzak, M.
    Mijowska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/778813.pdf
    Data publikacji:
    2015
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    reduced graphene oxide
    platinum nanoparticles
    palladium nanoparticles
    zirconia nanoparticles
    manganese dioxide nanoparticles
    Opis:
    Graphene – novel 2D material, which possesses variety of fascinating properties, can be considered as a convenient support material for the nanoparticles. In this work various methods of synthesis of reduced graphene oxide with metal or metal oxide nanoparticles will be presented. The hydrothermal approach for deposition of platinum, palladium and zirconium dioxide nanoparticles in ethylene glycol/water solution was applied. Here, platinum/reduced graphene oxide (Pt/RGO), palladium/reduced graphene oxide (Pd/RGO) and zirconium dioxide/reduced graphene oxide (ZrO2/RGO) nanocomposites were prepared. Additionally, manganese dioxide/reduced graphene oxide nanocomposite (MnO2/RGO) was synthesized in an oleic-water interface. The obtained nanocomposites were investigated by transmission electron microscopy (TEM), X-ray diffraction analysis (XRD), Raman spectroscopy and thermogravimetric analysis (TGA). The results shows that GO can be successfully used as a template for direct synthesis of metal or metal oxide nanoparticles on its surface with a homogenous distribution.
    Źródło:
    Polish Journal of Chemical Technology; 2015, 17, 4; 95-103
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of graphene-based biosensor for medical diagnostics
    Autorzy:
    Sobolewski, P.
    Penkala, K.
    Podolski, J.
    Mijowska, E.
    El Fray, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/285942.pdf
    Data publikacji:
    2014
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    biosensors
    medical diagnosis
    biomaterials
    Opis:
    The explosion of information provided by the “-omics,” (genomics, proteomics, etc.) has resulted in a pressing need to develop matching diagnostic technologies, so-called biosensors. Rapid, sensitive, selective, and cost-effective analysis of different biomolecules and microorganisms is crucial in clinical diagnosis and efficient treatment of patients. Further, there is a growing demand for decentralized laboratory methodologies that can be implemented in doctor’s office, emergency room or in the field for the analysis of such analytes as DNA, RNA, proteins, antibodies, bacteria, viruses, small compounds etc. Lab-on-a-chip platforms and miniaturized point-of-care devices based on biosensors fulfill these demands and are foreseen to revolutionize the future of medical diagnostics. Because of excellent electric and optical properties, graphene has recently found to be highly attractive in biosensing applications and may thrust new possibilities into the field of miniaturized medical diagnostic devices. The main objective of this project is to develop a multifunctional grapheme biosensor for effective electrochemical detection of specific DNA microbial targets in biological samples. Novel nanocomposites consisting of chitosan and nanoparticle-modified graphene will be combined with locked nucleic acid molecular beacons with the goal of producing “ink” for ultrasonic non-contact printing of electrical circuits. The developed technology will allow fabrication of low cost, highly sensitive biosensors for point-of-care diagnosis.
    Źródło:
    Engineering of Biomaterials; 2014, 17, no. 128-129; 83
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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