0000000000400562
AUTHOR
Juan Cacho
showing 5 related works from this author
Effect of micro-oxygenation on the evolution of aromatic compounds in wines: Malolactic fermentation and ageing in wood
2009
Abstract The effect of micro-oxygenation on the aromas of two varietal wines (Tempranillo and Cabernet Sauvignon) when alcoholic fermentation is complete was examined. Several factors, such as whether malolactic fermentation (MLF) took place in barrels or stainless steel vats and ageing time in oak barrels, were taken into account. Major aroma components were studied using GC-FID and minor compounds were studied by GC–MS analysis before and after MLF and after 4 and 8 months of maturation in oak barrels. Sensorial analysis was performed to describe and quantify the different wine notes. Micro-oxygenation affects different compounds but the effect depends to a great extent on the grape varie…
Biogenic amine determination in wine fermented in oak barrels: Factors affecting formation
2008
Changes in biogenic amines (histamine, putrescine, tyramine and cadaverine) were monitored during the industrial production of Tempranillo and Cabernet Sauvignon wines. The origin of these amines in relation to the presence of different lactic bacteria (indigenous or inoculated) during malolactic fermentation, while aging in oak barrel, and the correlations between amines and their corresponding amino acids were statistically evaluated. In this study we found that there was a greater increase in amines post malic acid depletion than during malolactic fermentation and that more amines were produced in wine of the Tempranillo variety. The total amino acid concentration was 1.6 times greater i…
Amino acids and volatile compounds in wines from Cabernet Sauvignon and Tempranillo varieties subjected to malolactic fermentation in barrels
2012
The aim of the present paper is to compare the behaviour of industrial lactic bacteria and indigenous bacteria of the cellar when malolactic fermentation was carried out in barrels. The effects of these bacteria on the concentration of metabolised amino acids during malolactic fermentation and on the composition of volatile compounds both before and after malolactic fermentation are studied. The experiment was performed with wines of the Tempranillo and Cabernet Sauvignon varieties. An analysis has been made of the easily extractable volatile compounds of the wood and the compounds from the grapes, and the action of the yeasts during the alcoholic fermentation. Acetoin and diacetyl decreas…
Caracterización organoléptica de vinos mediante nuevos métodos de análisis descriptivos
2015
International audience; El uso de metodologías rápidas permite obtener mapas descriptivos en menor tiempo, al reducir e incluso prescindir de las etapas de selección y entrenamiento de panelistas, que además son las más costosas. Se trabaja con la hipótesis de que los consumidores (jueces no entrenados) son capaces de describir los productos de una manera efectiva. Veamos cómo lograrlo con métodos basados en respuestas de similitud y respuestas verbales.
Factores implicados en la percepción de calidad : Estrategias para la evaluación de la calidad organoléptica de los vinos
2016
Titre traduit en français : "Facteurs impliqués dans la perception de la qualité : Stratégies d'évaluation de la qualité organoleptique des vins"; International audience; Definir el término calidad en el vino resulta complicado y no hay una definición universal: el carácter multidimensional de la calidad está relacionado con factores como la situación en la que se consume el vino, el entorno y la ocasión, las propiedades del producto en sí y quién es el consumidor.