Most studies on the antioxidant activity of flavonoids like Quercetin (Q) do not consider that it comprises a series of sequential reactions. Therefore, the present study examines how the redox energy flows through the molecule during Q's antioxidant activity, by combining experimental data with quantum calculations. It appears that several main pathways are possible. Pivotal are subsequently: deprotonation of the 7-OH group; intramolecular hydrogen transfer from the 3-OH group to the 4-Oxygen atom; electron transfer leading to two conformers of the Q radical; deprotonation of the OH groups in the B-ring, leading to three different deprotonated Q radicals; and finally electron transfer of each deprotonated Q radical to form the correspondin...
The knowledge of the degradation pathways of natural dyes used in medieval textiles is necessary for...
Objective: The present study aims to establish the relationship between the reported radical-scaveng...
Inhibition of free radicals using quercetin, hyperin and rutin is examined to determine their antiox...
Most studies on the antioxidant activity of flavonoids like Quercetin (Q) do not consider that it co...
The stronger antioxidant capacity of the flavonoid quercetin (Q) compared with taxifolin (dihydroque...
International audiencePolyphenols (synthetically modified or directly provided by human diet) scaven...
Flavonoids are a group of naturally occurring antioxidants, which over the past years have gained tr...
Despite its importance, little is known about the absolute performance and the mechanism for quercet...
Flavonols show an efficient scavenging activity against reactive oxygen radicals. However, the deta...
Polyphenols (synthetically modified or directly provided by human diet) scavenge free radicals by H-...
Some antioxidants have been shown to possess additional pro-oxidant effects. Diverse methodologies e...
Some antioxidants have been shown to possess additional pro-oxidant effects. Diverse methodologies e...
It has been reported that in an oxidative environment, the flavonoid 2R,3R-dihydroquercetin (2R,3R-D...
Antioxidants can reveal their activity through several different but similar reaction mechanisms suc...
This study explains the controversies in the literature concerning the number of electrons involved ...
The knowledge of the degradation pathways of natural dyes used in medieval textiles is necessary for...
Objective: The present study aims to establish the relationship between the reported radical-scaveng...
Inhibition of free radicals using quercetin, hyperin and rutin is examined to determine their antiox...
Most studies on the antioxidant activity of flavonoids like Quercetin (Q) do not consider that it co...
The stronger antioxidant capacity of the flavonoid quercetin (Q) compared with taxifolin (dihydroque...
International audiencePolyphenols (synthetically modified or directly provided by human diet) scaven...
Flavonoids are a group of naturally occurring antioxidants, which over the past years have gained tr...
Despite its importance, little is known about the absolute performance and the mechanism for quercet...
Flavonols show an efficient scavenging activity against reactive oxygen radicals. However, the deta...
Polyphenols (synthetically modified or directly provided by human diet) scavenge free radicals by H-...
Some antioxidants have been shown to possess additional pro-oxidant effects. Diverse methodologies e...
Some antioxidants have been shown to possess additional pro-oxidant effects. Diverse methodologies e...
It has been reported that in an oxidative environment, the flavonoid 2R,3R-dihydroquercetin (2R,3R-D...
Antioxidants can reveal their activity through several different but similar reaction mechanisms suc...
This study explains the controversies in the literature concerning the number of electrons involved ...
The knowledge of the degradation pathways of natural dyes used in medieval textiles is necessary for...
Objective: The present study aims to establish the relationship between the reported radical-scaveng...
Inhibition of free radicals using quercetin, hyperin and rutin is examined to determine their antiox...