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- Title
INVESTIGATION OF SYNERGIC/ANTI-SYNERGIC INTERACTIONS OF DIHYDROXIFUMARIC ACID AND ASCORBIC ACID WITH DPPH.
- Authors
VICOL, CRINA; CIMPOIU, CLAUDIA; DUCA, GHEORGHE
- Abstract
Reaction of the free-radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) with dihydroxyfumaric acid (DHF) and ascorbic acid (AA) was investigated in ethanolic media and in wine simulated matrix by using a stopped-flow system. The antioxidant activity for both acids were significantly higher in wine matrix, the observed constants (kobs) being about 3 s-1 for DHF and 0.66 s-1 for AA. Synergic and anti-synergic interactions of DHF and AA against DPPH were also investigated. A strong anti-synergic effect was noticed in ethanol (kobs < 0.35 s-1). In wine simulated matrix the constants were higher than in ethanol (kobs ≈ 1 s-1), but still too small for a synergic effect. Some explanations concerning the mechanisms of antioxidant action are proposed.
- Subjects
VITAMIN C; WINES
- Publication
Studia Universitatis Babes-Bolyai, Chemia, 2021, Vol 66, Issue 2, p49
- ISSN
1224-7154
- Publication type
Article
- DOI
10.24193/subbchem.2021.02.04