Efectos del deshojado sobre la composición fenólica y la calidad sensorial de los vinos de Tempranillo en la D.O. Utiel-Requena
[EN] Phenolic evolution and sensory quality of bobal red wines produced using different technologies. The aim of this study was to determine the influence of the ripeness of the grapes and maceration time during fermentation had on the phenolic and sensory quality of red wines from Bobal. Spectromet...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2014 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | español |
| OAI Identifier: | oai:riunet.upv.es:10251/96396 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/96396 |
| Access Level: | acceso abierto |
| Palabra clave: | Madurez Maceración Compuestos fenólicos Calidad sensorial Bobal Maturity Maceration Phenolic compounds Sensory quality TECNOLOGIA DE ALIMENTOS |
| Sumario: | [EN] Phenolic evolution and sensory quality of bobal red wines produced using different technologies. The aim of this study was to determine the influence of the ripeness of the grapes and maceration time during fermentation had on the phenolic and sensory quality of red wines from Bobal. Spectrometric analytical determinations of the color intensity, total polyphenol index, total anthocyanins, tannins, and Glories index were performed. The results obtained reveal an increase of tannins, polyphenols, and the degree of polymerization, and decreased the color intensity and the anthocyanin content. Ethanol and Hydrochloric index also increase, and thus the degree of condensation of tannins and combinations with polysaccharides, as occurs with Gelatine index, resulting in more astringent wines. In the sensory analysis of wines produced with different maceration times no statistically significant differences were found; although the sensations perceived by tasters in wine with longer maceration show pleasant connotations of concentration and smoothness. |
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