the modern lifestyle is characterized by a continuous increase in the demand of ready-to-eat fresh food products subjected to minimal processes prior marketing. attention is drawn towards the effect of this processing on the antioxidant/antiradical properties of two typical italian salads belonging to cichorium genus. four chemical assays (anti-peroxyl radical activity, dpph• assay, metal chela...

Maintaining wine oxidative stability and reducing SO2 addition remains a challenge in white winemaking. This study aimed to evaluate the antioxidant capacity of two yeast derivatives (YDs) with specific composition: one was rich compounds, including glutathione (YDR), other lipid compounds (YDL). Both YDs were evaluated for their antiradical activity model solution (by DPPH method) consume oxyg...

In the present work, four species of microalgae: Spirulina platensis (SP), Chlorella vulgaris (CV), Haematococcus pluvialis (HP), and the diatom Phaeodactylum tricornutum (PT) were selected as raw materials for the recovery of multifunctional extracts. Ultrasonic assisted extraction (UAE) using different solvents was applied under specific optimized conditions. Organic solvents such as hexane, ...

Natural flavonoids such as quercetin, (+)catechin and rutin as well as four methoxylated derivatives of quercetin used as models were investigated to elucidate their impact on the oxidant and antioxidant status of human red blood cells (RBCs). The impact of these compounds against metal toxicity was studied as well as their antiradical activities with DPPH assay. Antihemolytic experiments were ...

Capsella bursa-pastoris (L.) Medik. (Brassicaceae) is a wild herb with high nutritional value that can be eaten raw or cooked. A metabolomic study was performed with different extracts of its aerial parts that were tested concerning their antiradical, acetylcholinesterase inhibitory and antibacterial activities. Phenolic compounds were identified and quantified by HPLC-DAD, organic acids and am...

Based on the reaction of 1,6-diaryl-3, 4-dihydroxy-2, 4-hexadiene-1, 6-dione and arylidene-arylamines various 6-aryl-substituted-4-benzoylacetyl-4-hydroxy-5, 6-dihydro-4H-1, 3-oxazines were synthesized. Due to the relevance of search of new biologically active compounds with antioxidant activity, there was analyzed antiradical activity of derived oxazines. Antiradical properties of these compou...

Approximately 80% of sorghum phenolic compounds are linked to arabinoxylans by ester bonds, which are capable of resisting the digestion process in the upper gastrointestinal tract, compromising their bioaccessibility and biological potential. The aim of this study was to evaluate the effect of the extrusion process on the content of phenolic compounds in sorghum bran and its impact on phenolic...