Caracterización de la composición fenólica de uvas y vinos de la variedad Malbec (Vitis vinifera L.): su relación con el origen geográfico, factores vitivinícolas y valor comercial
Malbec (Vitis vinifera L.) is a wine grape variety considered to be the emblematic red cultivar of Argentina, but despite its economic and cultural importance there is a lack of knowledge about its chemical composition. The aim of this study was to characterize the phenolic composition of grapes and...
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| Tipo de recurso: | tesis doctoral |
| Estado: | Versión publicada |
| Fecha de publicación: | 2012 |
| País: | España |
| Institución: | Universitat Rovira i virgili (URV) |
| Repositorio: | Repositori Institucional de la Universitat Rovira i Virgili |
| OAI Identifier: | oai:urv.cat:TDX:1068 |
| Acceso en línea: | https://hdl.handle.net/20.500.11797/TDX1068 http://hdl.handle.net/10803/81715 |
| Access Level: | acceso abierto |
| Palabra clave: | 663/664 - Aliments i nutrició. Enologia. Olis. Greixos 634 - Horticultura. Viticultura 543 - Química analítica |
| Sumario: | Malbec (Vitis vinifera L.) is a wine grape variety considered to be the emblematic red cultivar of Argentina, but despite its economic and cultural importance there is a lack of knowledge about its chemical composition. The aim of this study was to characterize the phenolic composition of grapes and wines of this variety compared to other cultivars, geographical origin, some viticultural and winemaking practices, and its commercial value. Among the most relevant results, were observed qualitative and quantitative differences in global phenolic parameters and the profile of flavonoids and non-flavonoids in grapes and wines compared to other varieties, it was confirmed the influence of geographical zone and season in combination with the practices of cluster thinning and partial juice runoff prior to fermentation, and it found a greater phenolic and polysaccharidic richness in premium wines. Additionally, dihydroflavonols represented a taxonomic distinctive feature of this variety. |
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