| Conţinutul numărului revistei |
| Articolul precedent |
| Articolul urmator |
 |
 980 7 |
| Ultima descărcare din IBN: 2024-04-02 18:43 |
 SM ISO690:2012BOLOCAN (SECARA), Natalia. Stopped-flow spectrophotometric studies of the kinetics of interaction of dihydroxyfumaric acid with the dpph free radical
. In: Chemistry Journal of Moldova, 2010, nr. 2(5), pp. 83-87. ISSN 1857-1727. |
| EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
| Chemistry Journal of Moldova | ||||||
| Numărul 2(5) / 2010 / ISSN 1857-1727 /ISSNe 2345-1688 | ||||||
|
||||||
| Pag. 83-87 | ||||||
|
||||||
 Descarcă PDF |
||||||
| Rezumat | ||||||
The reaction of dihydroxyfumaric acid with the free radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) was studied using the stopped-flow method, in order to describe the reaction kinetics. Dihydroxyfumaric acid reacts very rapidly with DPPH, the reaction being completed in several minutes. This 2-stoichiometric reaction proceeds in two stages, with reaction orders of 1 and 0.76 with respect to DPPH, and 0.5 and 0.3 with respect to DHF,respectively. The rate constant of the two stages of the reaction were found to be 39.1 (L/mol·s) and 0.0012 (s-1) at 20º C and pH 4.0.
|
||||||
| Cuvinte-cheie DPPH; antioxidant activity; stoichiometry; stopped-flow; kinetics; dihydroxyfumaric acid |
||||||
|
|
|
|
