dc.contributor.author |
Tsimogiannis, DI |
en |
dc.contributor.author |
Oreopoulou, V |
en |
dc.date.accessioned |
2014-03-01T01:20:32Z |
|
dc.date.available |
2014-03-01T01:20:32Z |
|
dc.date.issued |
2004 |
en |
dc.identifier.issn |
14668564 |
en |
dc.identifier.uri |
https://dspace.lib.ntua.gr/xmlui/handle/123456789/15953 |
|
dc.subject |
Antioxidants |
en |
dc.subject |
DPPH |
en |
dc.subject |
Flavonoids |
en |
dc.subject |
Lipid peroxidation |
en |
dc.subject.other |
Antioxidants |
en |
dc.subject.other |
Catalyst activity |
en |
dc.subject.other |
Chemical bonds |
en |
dc.subject.other |
Composition effects |
en |
dc.subject.other |
Free radical reactions |
en |
dc.subject.other |
Lipids |
en |
dc.subject.other |
Materials testing |
en |
dc.subject.other |
Oils and fats |
en |
dc.subject.other |
Organic solvents |
en |
dc.subject.other |
Oxidation |
en |
dc.subject.other |
Structure (composition) |
en |
dc.subject.other |
Substitution reactions |
en |
dc.subject.other |
Antioxidant activity |
en |
dc.subject.other |
Free radical scavenging |
en |
dc.subject.other |
Hydroxy-substituted flavonoids |
en |
dc.subject.other |
Lipid peroxidation |
en |
dc.subject.other |
Structural element contribution |
en |
dc.subject.other |
Enzymes |
en |
dc.subject.other |
1,1 diphenyl 2 picrylhydrazyl |
en |
dc.subject.other |
acetic acid ethyl ester |
en |
dc.subject.other |
carbon |
en |
dc.subject.other |
carbonyl derivative |
en |
dc.subject.other |
catechin |
en |
dc.subject.other |
cotton seed oil |
en |
dc.subject.other |
eriodictyol |
en |
dc.subject.other |
flavonoid |
en |
dc.subject.other |
free radical |
en |
dc.subject.other |
lipid |
en |
dc.subject.other |
luteolin |
en |
dc.subject.other |
methanol |
en |
dc.subject.other |
peroxide |
en |
dc.subject.other |
quercetin |
en |
dc.subject.other |
solvent |
en |
dc.subject.other |
taxifolin |
en |
dc.subject.other |
analytic method |
en |
dc.subject.other |
analytical parameters |
en |
dc.subject.other |
antioxidant activity |
en |
dc.subject.other |
article |
en |
dc.subject.other |
chemical bond |
en |
dc.subject.other |
concentration response |
en |
dc.subject.other |
controlled study |
en |
dc.subject.other |
drug mechanism |
en |
dc.subject.other |
lipid peroxidation |
en |
dc.subject.other |
prediction |
en |
dc.subject.other |
reaction analysis |
en |
dc.subject.other |
satisfaction |
en |
dc.subject.other |
scavenging system |
en |
dc.subject.other |
statistical significance |
en |
dc.subject.other |
structure activity relation |
en |
dc.subject.other |
Micropus |
en |
dc.title |
Free radical scavenging and antioxidant activity of 5,7,3′,4′-hydroxy-substituted flavonoids |
en |
heal.type |
journalArticle |
en |
heal.identifier.primary |
10.1016/j.ifset.2004.05.006 |
en |
heal.identifier.secondary |
http://dx.doi.org/10.1016/j.ifset.2004.05.006 |
en |
heal.publicationDate |
2004 |
en |
heal.abstract |
The antioxidant efficiencies of 5,7,3′,4′-hydroxy-substituted flavonoids were examined. The tested compounds (quercetin, luteolin, taxifolin, (+)-catechin and eriodictyol) were selected with a view to their C-ring differentiated pattern. Each one was added in cottonseed oil at equimolar amounts and the retardation of lipid peroxidation was estimated by means of peroxide value. Furthermore, their ability to scavenge DPPH radical was studied in two solvents (methanol and ethyl acetate) and the DPPH method proved a satisfactory prediction test for the antioxidant action of flavonoids in oils when methanol was used as the reaction media. Furthermore, the comparison of the C-ring structural element contribution to the antioxidant action revealed the full substitution to be the most important followed by the 3-OH and 2,3-double bond in the presence of the 4-carbonyl. Concerning the monosubstituted flavonoids, the 4-carbonyl group induced minor activity, whereas the 3-OH increased significantly the antiradical and antioxidant action. © 2004 Elsevier Ltd. All rights reserved. |
en |
heal.journalName |
Innovative Food Science and Emerging Technologies |
en |
dc.identifier.doi |
10.1016/j.ifset.2004.05.006 |
en |
dc.identifier.volume |
5 |
en |
dc.identifier.issue |
4 |
en |
dc.identifier.spage |
523 |
en |
dc.identifier.epage |
528 |
en |