Wszystkie pola: DPPH· - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: DPPH radical scavenging activity and phenolic compound content in different leaf extracts from selected blackberry species
Autorzy:: Gawron-Gzella, A.
Dudek-Makuch, M.
Matlawska, I.
Powiązania:: https://bibliotekanauki.pl/articles/19626.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: We used DPPH scavenging assays to study the antioxidant activity of three native Polish species of blackberry leaves (Rubus kuleszae Ziel., R. fabrimontanus (Sprib.) Sprib. and R. capitulatus Utsch.). All the studied extracts (methanolic, water, methanolic-water) showed high DPPH free radical scavenging activity (IC50 450.0–186.0 μg/ml). The most effective of the studied species was Rubus kuleszae. Total content of phenolic compounds (70.50–136.04 mg GAE/g) and phenolic acids (14.70–38.26 mg CAE/g) was determined spectrophotometrically. Antioxidant activity correlated positively with total content of phenolic compounds and phenolic acids.
Źródło:: Acta Biologica Cracoviensia. Series Botanica; 2012, 54, 2
0001-5296
Pojawia się w:: Acta Biologica Cracoviensia. Series Botanica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Long wave UV-B radiation and Asahi SL modify flavonoid content and radical scavenging activity of Zea mays var. saccharata leaves
Autorzy:: Skorska, E.
Grzeszczuk, M.
Baranska, M.
Wojcik-Stopczynska, B.
Powiązania:: https://bibliotekanauki.pl/articles/2117893.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: biostimulator
DPPH
flavonoids
maize
photosynthesis
ultraviolet B
Opis:: The experiment on Zea mays L. cv. Landmark (F1) plants was performed in a greenhouse with UV-B (305–315 nm). The pots with plants were divided into four groups: the first and the second groups were grown, respectively, at low (1.0 kJ m -2 d -1 ) and high (3.0 kJ m -2 d -1 ) biological effective dose of UV-B radiation. Half of the pots of each group were sprayed with 0.1% solution of Asahi SL (the third and fourth groups). The intensity of photosynthe- sis and transpiration, chlorophyll fluorescence, the content of UV-absorbing compounds and radical scavenging activity were measured using DPPH after four and six weeks of UV-B radiation. After six weeks of irradiation with a higher UV-B dose both flavonoid content and antioxidant activity increased by 112% and by 44%, respectively, compared to the plants grown at the lower dose. The plants treated with Asahi SL and exposed to the high dose of UV-B had the content of flavonoids 80% higher than the control ones. Asahi SL decreased scavenging activity in both groups of plants by 17% and 32%, respectively, in comparison with the untreated plants. The intensity of net photosynthesis, the transpiration rate and chlorophyll fluorescence parameters (Fv/Fo, ETR, Rfd) did not differ in most of variants.
Źródło:: Acta Biologica Cracoviensia. Series Botanica; 2019, 61, 1; 87-92
0001-5296
Pojawia się w:: Acta Biologica Cracoviensia. Series Botanica
Dostawca treści:: Biblioteka Nauki

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