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Ultima descărcare din IBN: 2024-01-27 16:34 |
SM ISO690:2012 CUCIUC, Maria. Stabilizarea vinurilor roşii cu utilizarea derivaţilor acidului tartric. In: Analele Ştiinţifice ale Universităţii de Stat din Moldova: . Științe ale naturii și exacte, 21 august 2013, Chișinău. Chișinău, Republica Moldova: Universitatea de Stat din Moldova, 2013, SNE, pp. 48-52. |
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Analele Ştiinţifice ale Universităţii de Stat din Moldova SNE, 2013 |
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Conferința "Analele ştiinţifice ale USM. Științe ale naturii și exacte" Chișinău, Moldova, 21 august 2013 | ||||||
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In this project we have studied the process of oxidation of (+)-catechine on model systems and phenolic compounds of dry red wine “Merlot”, using Fenton’s reagent, with and without inhibitors. The inhibitors of this process used in the study were: quercetin, dihydroxyfumaric acid, sodium dihydroxyfumarate, (+)dimethyl L-tartrare(EDMT), sulfur dioxide. The determinations of (+)-catechine and phenolic compounds concentrations was made with Folin-Ciocâlteu reagent following the described method. We have built up the kinetic diagrams of the (+)-catechine and phenolic compounds consumptions depending on initial concentration of (+)-catechine, Fe2+, H2O2, inhibitors. We have studied the dependence of consumption rate of (+)-catechine and phenolic compounds upon initial concentration of substances listed above and built up a comparative diagram of (+)-catechine and phenolic compounds consumptions, at certain level of inhibitors. Then I put them in the succession of their activity as antioxidant: DFH4<EDMT<Cv<SO2. |
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