The Possibilities of the Redox Potential Aplication in Wine Technology
نویسنده
چکیده
In wine technology redox potential represents fast, accurate and reliable measurement which results give an insight into oxidation as well as reduction ability of wine, its alteration and its influence on quality and stability. Wine as the fermentation product express a reductive character related towards the oxidation. The majority of top quality wines express very low redox potential characters Eh 240 to 330 mV (rH 15 to 18). Redox potential levels from Eh 270 to 340 mV, ( rH 16 to 18) are typical for healty error free wines, while in opposite Eh 420 to 500 mV (rH 22 to 24) represents oxidized wines with typical failures. In present research, redox potential was used as a key parameter for monitoring of wine fermentation of cabernet sauvignon.
منابع مشابه
Computational and electrochemical studies on the redox reaction of 2-(2,3-dihydroxy phenyl)-1,3- dithiane in aqueous solution
Electrode potential of 2-(2,3-dihydroxy phenyl)-1,3-dithiane (DPD) was investigated by means of cyclic voltammetry (CV) at various potential scan rates. The calculated value was compared with the experimental value obtained by cyclic voltammetry (CV). All experiments were done in aqueous phosphate buffer solutions at different pHs. The experimental redox potential of DPD was obtained to be 0.75...
متن کاملHow to Change the Redox Potential of Guanine?
Due to some important applications of guanine electrode in scientific and technology research such as electro-chemical DNA based biosensors, and a problem of high redox potential of guanine (0.81 V), our research study concentrates on reducing guanine redox potential by substituting Cu, Ag, Au, CH3, C2H5 and Cl on sites of 1, 2 and 9 of guanine. A 5.0% reduction...
متن کاملThe Effect of Coinage Transition Metal (Cu, Ag, Au) Substitutions on Two-electron Redox Potential of Quinones
Quinones are a class of compounds which have widespread importance in chemistry, biology and medicine. Because of their appropriate performance in electron transferring rate, quinones are among the most applicable mediators in biosensors. Recently, the effects of different non-metal substitutions on redox potential of quinone have been investigated to design suitable mediators for different ele...
متن کاملCollectorless flotation of Chalcocite by controlling redox potential
Using microflotation method, this study explored the collectorless flotation of Chalcocite and its dependence on the redox potential of pulp . Electrochemical studies were performed by cyclic voltammetry in specific potential ranges and at different pH values. The results show that significant floatability of Chalcocite occurs in the specific reducing conditions. By increasing potentials, on t...
متن کاملQuantitative Structure-Pproperty Relationship Modeling of the Redox Potential for Some Phenolic Antioxidants
In this work, quantitative structure-property relationship (QSPR) approaches were used to predict the redox potential of 42 phenolic antioxidants. The structures of all compounds optimized by the AM1 semi-empirical method and then a large number of molecular descriptors were calculated for each compound in the data set. Subsequently, stepwise multilinear regression was applied to select the mos...
متن کامل