Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 17, Issue 12, Pages -Publisher
MDPI AG
DOI: 10.3390/ijms17121986
Keywords
flavonoids; redox chemistry; differential pulse voltammetry; deoxyribose degradation assay; Fenton reaction
Funding
- Austrian Science Fund (FWF) [P24630-B21]
- Austrian Science Fund (FWF) [P24630] Funding Source: Austrian Science Fund (FWF)
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The flavanol (+/-)-catechin shows an OH group but no 4-keto group on ring C (C3), and no conjugation between ring A and B. The related flavanone (+)-eriodictyol has a keto group on C4 but no 3-OH group on ring C. (+)-Taxifolin, another flavanone, has an OH on C3 and a keto group on C4 of the C ring. Deoxyribose degradation assay systems, with hydrogen peroxide and ascorbic acid either added or omitted, were performed in variants in which Fe(III) was added in a complex with ethylenediaminetetraacetic acid (EDTA). In combination with differential pulse voltammetry (DVP), the specific redox-chemical contributions of the ring A m-dihydroxyl groups could be explored more specifically in addition to those of the traditionally investigated o-dihydroxyl groups of ring B.
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