Search results for "Anti-radical"

showing 2 items of 2 documents

Wild

2021

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0106 biological sciencesGermplasmPhytochemistryTPCC total phenolic contentElderberry flowerISSR inter-simple sequence repeatElderberry fruitIC50 the half maximal inhibitory concentrationBerrySambucus nigra01 natural sciencesArticleTFC total flavonoid contentDW dry weightSARS-CoV2 severe acute respiratory syndrome coronavirus 2Rutinchemistry.chemical_compoundBotanyELISA enzyme linked immunosorbent assayCultivarAntiviralComputingMethodologies_COMPUTERGRAPHICSGenetic diversityACE2 angiotensin converting enzyme 2biology010405 organic chemistryPVPP polyvinylpyrrolidoneSambucus nigra L.biology.organism_classification0104 chemical scienceschemistryHPLC high-performance liquid chromatographyTEAC trolox equivalent anti-radical capacityGene poolAgronomy and Crop Science010606 plant biology & botanyBinding domainIndustrial crops and products
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Ag5 nanoclusters with dual catalytic antiradical activities

2022

Silver nanoclusters of five atoms (Ag5) display outstanding catalytic activities for the deactivation of radicals. Using 2,2-diphenyl-1‑picrylhydrazyl (DPPH) radical as a model system, we observed a fast radical reduction to DPPH anions using only [Ag5] 3 to 4 orders of magnitude less than [DPPH]. Moreover, nanoclusters remain stable at the end of the reaction, and can deactivate again DPPH radicals at the same rate, indicating that they act as anti-radical catalysts. The radical scavenger catalytic activity of Ag5 proceeds selectively through the oxidation of methanol (used to dissolve the radical) to formaldehyde, which is supported by DFT calculations. The obtained catalytic rate constan…

Anti-radicalsAnti-radicalCatalysisSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsCatalysiBiomaterialsPolymer ageingColloid and Surface ChemistryPolymer ageing.Settore CHIM/03 - Chimica Generale E InorganicaSilver nanoclusterPolymer stabilizationSilver nanoclusters
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