Manuel Jesús Delgado-González

Manuel Jesús Delgado-González
Universidad de Cádiz | UCA · Department of Analytical Chemistry

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7
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Publications

Publications (7)
Article
Full-text available
The acceleration on the extraction by the sonication of phenolic compounds (measured as the Total Phenolic Index) from wood chips by wine distillates is studied in the present paper. Using the Arrhenius equation, the theoretical temperature at which the kinetics obtained by these sonicated extraction processes are equal to the kinetics of non-sonic...
Article
suitability of other types of woods for the ageing of these wines was carried out. To compare the characteristics of the alternative woods, an oloroso wine was aged in four groups of 16 L barrels made of French oak, Spanish oak, chestnut, as well as American oak as control, with intense and medium toasting. Phenolic and furanic compounds, organic a...
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Brandy de Jerez is a grape-derived spirit drink, aged in oak casks that have previously contained any kind of sherry wine. During its ageing, the brandy is enriched with phenolics compounds from the wood and its seasoning. It is interesting to study the phenolic composition of the sample in order to control the evolution of brandy ageing. According...
Article
The colour of alcoholic beverages increases as they are aged in wood casks, due to the oxidation of the extracted phenols and tannic substances. In this paper, sixteen ageing experiments were carried out involving four different types of wood (American oak, French oak, Spanish oak and Chestnut), two toasting intensities (intense and medium toasting...
Article
Full-text available
The use of alternative types of wood has arisen for the aging of the Brandy de Jerez, on a pilot plant level. In particular, besides the use of American oak, two more types of oak have been studied, French oak and Spanish oak, allowed by the Technical File for the ID Brandy de Jerez, and chestnut, which, though it is not officially allowed, is a ty...
Article
Full-text available
Colorimetry allows every color to be defined as a combination of three values, known as color coordinates. Color coordinates allow researchers to universalize and standardize their color measurements, and nowadays, determining the color coordinates of samples is a routine method applied by organic and analytical chemists, students, and specialists...
Article
During the ageing of brandies, many physicochemical processes take place involving the distilled spirit and the wood of the casks. Because of these reactions, the polyphenolic content of brandies and their content of organic acids increase with the ageing. These reactions are slow, and the ageing of high-quality brandies takes several years. In thi...

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