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    Wyświetlanie 1-4 z 4
    Tytuł:
    Nie chodzi (tylko) o Erikę Steinbach : trzy mity niemieckiego dyskursu o wysiedleńcach = Its not (only) about Erika Steinbach : three myths in the German discourse on the resettlementts
    Its not (only) about Erika Steinbach : three myths in the German discourse on the resettlementts.
    Autorzy:
    Kwiatkowska-Drożdż, Anna.
    Współwytwórcy:
    Klimowicz, Magdalena. Tłumaczenie
    Data publikacji:
    2010
    Wydawca:
    Warszawa : Ośrodek Studiów Wschodnich im. Marka Karpia
    Tematy:
    Wysiedlanie
    Publicystyka niemiecka 21 w.
    Opis:
    Bibliogr. przy rozdz.
    Dostawca treści:
    Bibliografia CBW
    Książka
    Tytuł:
    Comparison of the antioxidant potential of some herbal teas produced from ecological and traditional crops
    Autorzy:
    Wira, Daria
    Zielonka-Brzezicka, Joanna
    Muzykiewicz-Szymańska, Anna
    Klimowicz, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/1830664.pdf
    Data publikacji:
    2021-09-29
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    free radicals
    organic cultivation
    antiradical activity
    polyphenols content
    oxidative stress
    Opis:
    The growing public awareness of the dangers regarding chemicals used in traditional agriculture has led to consumers seeking valuable and contaminant-free products. Ecological agriculture has become synonymous with high health value and product safety. The aim of this study was to evaluate the antioxidant activity and the total polyphenolic content of infusions of herbal tea bags and loose teas from traditional crops, as well as infusions of loose teas from ecological crops. Raw material comprised dried flowers of Matricaria chamomilla and Tilia cordata, as well as dried leaves of Urtica dioica, Melissa officinalis and Mentha piperita. Herbal infusions were prepared using three brewing times: 5, 10 and 20 min. The analysis of antioxidant potential was performed using in vitro methods such as DPPH, ABTS and FRAP. The polyphenolic content was determined using the Folin-Ciocalteu method. The antioxidant activity of the studied tea infusion depended on the method by which the plants were cultivated and the brewing time. The ecological agriculture conditions seem not to stimulate the synthesis of antioxidants. However, the possibility to obtain other beneficial properties of the studied plants is an indication to carry out ecological cultivation.
    Źródło:
    Acta Universitatis Lodziensis. Folia Biologica et Oecologica; 2021, 17; 97-103
    1730-2366
    2083-8484
    Pojawia się w:
    Acta Universitatis Lodziensis. Folia Biologica et Oecologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of antioxidant activity of extracts of hop leaves harvested in different years
    Autorzy:
    Muzykiewicz, Anna
    Nowak, Anna
    Zielonka-Brzezicka, Joanna
    Florkowska, Katarzyna
    Duchnik, Wiktoria
    Klimowicz, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/2048759.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Włókien Naturalnych i Roślin Zielarskich
    Tematy:
    Humulus lupulus L.
    DPPH
    Folin-Ciocalteu method
    FRAP
    antioxidants
    ultrasoundassisted extraction
    metoda Folin-Ciocalteu
    antyoksydanty
    ekstrakcja wspomagana ultradźwiękami
    Opis:
    Introduction: Hop (Humulus lupulus L.) is a common plant in Europe, with many beneficial health effects. In addition to the use in brewing, hops are a valuable source of active substances used in conventional and folk medicine, such as humulones and lupulones, as well as antioxidants, including phenolic compounds. Objective: The aim of the study was to evaluate and compare the antioxidant activity of alcoholic extracts of fresh hop leaves collected in 2017 and 2018. Material and methods: The raw material consisting of fresh hop leaves was extracted using ultrasoundassisted extraction. Methyl, ethyl and isopropyl alcohol at three concentrations were used as extractants. The antioxidant activity of extracts was determined using DPPH and FRAP methods. Total phenolic content was evaluated using the Folin-Ciocalteu technique. Results: All the extracts showed antioxidant potential as well as the phenolic content. Regardless of the harvesting year and methods of evaluation, the highest antioxidant activity and the total polyphenol content were observed for extracts prepared in undiluted methanol, obtained during one hour lasting extraction. Conclusion: The results of the studies have suggested that hop leaves can be a potential source of healthpromoting antioxidants.
    Źródło:
    Herba Polonica; 2019, 65, 3; 1-9
    0018-0599
    Pojawia się w:
    Herba Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    COMPARISON OF ARTIFICIAL HYDROPHILIC AND LIPOPHILIC MEMBRANES AND HUMAN SKIN TO EVALUATE NIACINAMIDE PENETRATION IN VITRO
    Autorzy:
    Nowak, Anna
    Church, Martin K.
    Duchnik, Wiktoria
    Różewicka-Czabańska, Monika
    Bielecka-Grzela, Stanisława
    Prowans, Piotr
    Pietriczko, Jan
    Czapla, Norbert
    Bargiel, Piotr
    Klimowicz, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/895721.pdf
    Data publikacji:
    2020-04-29
    Wydawca:
    Polskie Towarzystwo Farmaceutyczne
    Tematy:
    penetration
    Franz diffusion cell
    Niacinamide (Vitamin B3)
    artificial membrane
    human skin
    Opis:
    The evaluation of skin penetration of active substances from topical preparations is a pre-clinical requirement in the pharmaceutical industry. While in vitro preparations of human or animal skin are frequently used the development of artificial lipophilic and hydrophilic membranes with similar properties to human or animal skin need to be developed. This preliminary study compared the in vitro permeation of niacinamide (vitamin B3), which is used as a model drug, across artificial hydrophilic and lipophilic membranes with iv vitro penetration across human skin. The experiments were carried out in Franz diffusion cells. Artificial membranes were filter paper impregnated with either collodium (hydrophilic), stearic acid, cetyl alcohol or cetyl alcohol + cholesterol (lipophilic). Acidic and neutral hydrogel and emulsion (pH 5.4 and 7.4) containing 0.5% of niacinamide were applied to membranes for up to 4 hours. Niacinamide permeated hydrophilic better than lipophilic membranes. There were no significant differences between the cumulated amounts of niacinamide that penetrated artificial lipophilic membranes consisting of, stearic acid, cetyl alcohol and cholesterol as compared with human skin in vitro. Also, hydrogel and emulsion solvents gave similar results. In conclusion, these artificial membranes seem to be a promising alternative to human or animal skin.
    Źródło:
    Acta Poloniae Pharmaceutica - Drug Research; 2020, 77, 2; 271-279
    0001-6837
    2353-5288
    Pojawia się w:
    Acta Poloniae Pharmaceutica - Drug Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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