Autor: Dziedziński, M - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Antioxidant capacity and cholinesterase inhibiting properties of dietary infusions with Humulus lupulus
Autorzy:: Dziedzinski, M.
Szczepaniak, O.
Telichowska, A.
Kobus-Cisowska, J.
Powiązania:: https://bibliotekanauki.pl/articles/14227.pdf
Data publikacji:: 2020
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Źródło:: Journal of Elementology; 2020, 25, 2
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Antioxidant potential, mineral composition and inhibitory effects of conifer needle extract on hyaluronidase – prospects of application in functional food
Autorzy:: Dziedziński, M
Kobus-Cisowska, J.
Stuper-Szablewska, K.
Cielecka-Piontek, J.
Wilk, R.
Ludowicz, D.
Powiązania:: https://bibliotekanauki.pl/articles/54154519.pdf
Data publikacji:: 2022
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:: Conifers have long been used as a source of compounds with therapeutic and health-promoting potential, as well as raw materials containing characteristic aromatic and flavour substances. The aim of this study was to characterise the mineral composition of the needles of selected conifers, i.e. Picea abies L., Larix decidua Mill., Pinus sylvestris L., Pseudotsuga menziesii and Juniperus communis L., Abies alba Mill., and to evaluate them as a source of bioactive compounds with antioxidant and inhibitory activity against hyaluronidase evaluated by an in vitro method. The highest total mineral content was found in Abies alba Mill., Pseudotsuga menziesii, while extracts obtained from Picea abies L. and Larix decidua Mill. were characterised by the highest content of phenolic compounds. Extracts from the needles of Larix decidua Mill. showed the highest antioxidant activity in DPPH and FRAP radical assays. The presence of tannins, terpenoids, saponins and coumarins was demonstrated in all the extracts tested by qualitative screening tests. Conifer needles, i.e. needles of Picea abies L., Larix decidua Mill, Abies alba, Pinus sylvestris L., Pseudotsuga menziesii and Juniperus communis L., can be a valuable and ecological source of polyphenols and minerals.
Źródło:: Journal of Elementology; 2022, 27, 4; 831-845
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Effect of metal ions from Ginkgo biloba extracts on the oxidative stability of rapeseed oil and its triacylglycerols
Autorzy:: Kobus-Cisowska, J.
Dziedzinski, M.
Szczepaniak, O.
Flaczyk, E.
Telichowska, A.
Krol, E.
Staniek, H.
Byczkiewicz, S.
Powiązania:: https://bibliotekanauki.pl/articles/1192072.pdf
Data publikacji:: 2020
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:: Ginkgo biloba
minerals
lipid
oil
antioxidants
triacylglycerol
Opis:: Total antixodative effect is difficult to predict because the total antiradical capacity depends not only on properties of individual compounds, but also on their mutual interactions. The study examined the effect of the addition of Ginkgo biloba antioxidants to refined rapeseed oil on the stabilization of the oil and its triacylglycerols, measured by an Oxidograph accelerated oxidative stability test and the Rancimat test. The mineral composition of oil was also determined. The tested samples were observed to respond differently in terms of the induction period, which was the longest periods for ethanolic extracts, and the shortest for aqueoeus ones. The highest values of the protective factor were observed in the samples with added ethanolic extract of green leaves, while the lowest ones were noted in all aqueous extracts. In all the tested samples, values of the protection factor increased along with the growing extract concentration in a sample. Among the tested additives, butylated hydroxytoluene added to a sample of oil resulted in the longest induction period. Among the analysed microelements, iron was the prevalent one, with its concentration being significantly higher in water extracts. The least abundant was selenium. The antioxidative capacity of Ginkgo biloba extract resulted from the presence of transitional metals and polyphenols, as the presence of zinc, copper and iron affects the bioavailability of flavonoids. Negative relationships were noted between microelements in the extracts and its oxidative stability, which indicated the oxidative activity of the former. G. biloba extracts may be a new source of stabilising additives for high-fat foods. However, further reasearch I needed to confirm this assumption, particularly because food is a complex matrix, in which ingredients might interact with one another, causing higher or lower antioxidative capacity
Źródło:: Journal of Elementology; 2020, 25, 3; 851-862
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

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