نتایج جستجو برای: antiradical activity

تعداد نتایج: 1134527  

Journal: :Journal of animal science 2015
A Di Giancamillo R Rossi G Pastorelli D Deponti V Carollo D Casamassima C Domeneghini C Corino

Twenty-four weaned female Hypor piglets (10.9 ± 0.1 kg mean BW) were used to evaluate the antioxidant effect of a natural extract, titrated in verbascoside, on blood and liver oxidative status in relation to a high intake of n-6 PUFA, inducing oxidative stress. Piglets were assigned to 1 of 3 experimental groups; the first group was fed a diet with 9% sunflower oil (T1) and the second received ...

Journal: :Molecules 2023

Free radicals and oxidants may cause various damages both to the lifeworld different products. A typical solution for prophylaxis of oxidation-caused conditions is usage antioxidants. Among them, classes are found—polyphenols, conjugated polyalkenes, some sulfur nitrogen derivatives. Regarding active site in molecules, a widely discussed group compounds 1,3-dicarbonyl compounds. them natural (e...

Journal: :Eurasian Chemico-Technological Journal 2023

The purpose of this work is the synthesis new isonicotinic acid hydrazones, study their structure, reactivity and biological screening some synthesized compounds. reactions leading to N-arylidene(alkylidene) hydrazones via condensation hydrazide with various derivatives aromatic aldehydes were studied. structure functionally substituted was established by FTIR, 1H 13C NMR, two-dimensional COSY ...

2015
Yuriy M. Kononevich Ludmila S. Bobkova Alexander S. Smolski Anatoly M. Demchenko

New 7-thio derivatives of 6,7-dihydro-1H-cyclopenta[d]pyrimidine-2,4(3H,5H)-dione have been synthesized by the reaction of 3-cyclohexyl-7-thio-6,7-dihydro-1H-cyclopenta[d]pyrimidine-2,4(3H,5H)-dione with alkylhalogenides. The synthesized compounds were tested for antioxidant activity on the model of Fe(2+)-dependent oxidation of adrenaline in vitro. It was found that the antiradical activity of...

2018
Spyros Grigorakis Dimitris P Makris

Background: The aromatic plant Stachys mucronata (Lamiaceae) is endemic to the island of Crete (southern Greece), but as opposed to other native Greek members of this family, this species has never been investigated in the past with regard to its polyphenolic composition and antioxidant potency. Methods: Aerial parts of S. mucronata were exhaustively extracted and partly fractionated through pa...

Journal: :Phytochemical analysis : PCA 2010
Milena Popova Chia-Nan Chen Pen-Yuan Chen Chung-Yang Huang Vassya Bankova

INTRODUCTION Because of its chemical diversity, the only way to standardise propolis is to specify multiple standards for different propolis types according to the corresponding chemical profile. So far, this has been done only for European propolis. OBJECTIVE To develop a rapid low-cost spectrophotometric procedure for quantification of bioactive prenylated flavanones in Taiwanese propolis. ...

Journal: :Molecules 2011
Pavel Mučaji Anna Záhradníková Lýdia Bezáková Mária Cupáková Drahomíra Rauová Milan Nagy

The aim of the study was a HPLC evaluation of the lipoxygenase activity inhibiting activity of a water infusion of Ligustrum vulgare L. leaves and selected isolates from it. The antiradical activity of the water infusion was determined using DPPH, ABTS and FRAP tests. Oleuropein and echinacoside concentrations in the water infusion were determined by HPLC. Water infusion, echinacoside and oleur...

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