Autor: Matlawska, I. - 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

Artykuł

Skocz do pozycji: 2.

Tytuł:: Antioxidant activity of flavonoids of different polarity, assayed by modified ABTS cation radical decolorization and EPR technique
Autorzy:: Pawlak, K
Bylka, W.
Jazurek, B.
Matlawska, I.
Sikorska, M.
Manikowski, H.
Bialek-Bylka, G.
Powiązania:: https://bibliotekanauki.pl/articles/19612.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: Modified ABTS cation radical decolorization assay and EPR technique were applied to screen the antioxidant activity of three flavonoids with different polarity: 7-O-β-[2-O-feruloyl-β-glucuronopyranosyl (1→2) glucuronopyranoside] (tricine), 4'-methoxy-5,7-dihydroxyflavone 6-C-β-glucopyranoside (isocytisoside) and I 3' II 8 biapigenine (amentoflavone), with nonpolar all-trans β-carotene used as standard carotenoid molecule. The ABTS [2,2'- azino-bis(3-ethylbenzthiazoline-6-sulphonic acid] cation radical decolorization assay was modified as follows: (1) measurements extended up to 8 days after preparation, (2) method adapted for flavonoids with different polarity and β-carotene, (3) concentrations in the 0.01-10 μM range of both trolox and antioxidants in order to use the same experimental conditions for both this technique and EPR measurement.
Źródło:: Acta Biologica Cracoviensia. Series Botanica; 2010, 52, 1; 97-104
0001-5296
Pojawia się w:: Acta Biologica Cracoviensia. Series Botanica
Dostawca treści:: Biblioteka Nauki

Artykuł

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