NDLI: On the ability of four flavonoids, baicilein, luteolin, naringenin, and quercetin, to suppress the fenton reaction of the iron-ATP complex

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On the ability of four flavonoids, baicilein, luteolin, naringenin, and quercetin, to suppress the fenton reaction of the iron-ATP complex

Content Provider	Springer Nature Link
Author	Cheng, I. Francis Breen, Kevin
Copyright Year	2000
Abstract	Four flavonoids, baicilein, luteolin, naringenin, and quercetin were investigated for their ability to suppress the Fenton reaction characteristic of the iron-ATP complex. Absorption spectroscopy indicates that under the conditions of 18.75% aqueous methanol, 0.0625 mM HEPES pH 7.4 buffer and 1.5:1 quercetin/iron-ATP ratio a mix ligand complex formed. All four flavonoids were found to interfere with the voltammetric catalytic wave associated with the iron-ATP complex in the presence of H2O2. Quercetin and luteolin were able to completely suppress the catalytic wave of the iron-ATP/H2O2 system when a minimum ratio of 1.5:1 of the flavonoid to iron-ATP was reached. At this ratio, the ability of the studied series of flavonoids to suppress the Fenton reaction characteristic of iron-ATP follows as quercetin ≈ luteolin > naringenin ≈ baicilein. Both quercetin and luteolin contain catechol on the B ring, which may enhance the iron chelation of these species over baicilein and naringenin. The common structural feature of all of these flavonoids is the 4-keto, 5-hydroxy region, which may also contribute to the chelation of iron.
Starting Page	77
Ending Page	83
Page Count	7
File Format	PDF
ISSN	09660844
Journal	BioMetals
Volume Number	13
Issue Number	1
e-ISSN	15728773
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2000-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physical Chemistry Biochemistry
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys Biochemistry, Genetics and Molecular Biology Biomaterials Agricultural and Biological Sciences

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On the ability of four flavonoids, baicilein, luteolin, naringenin, and quercetin, to suppress the fenton reaction of the iron-ATP complex

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