Issue |
BIO Web Conf.
Volume 15, 2019
42nd World Congress of Vine and Wine
|
|
---|---|---|
Article Number | 01002 | |
Number of page(s) | 14 | |
Section | Viticulture | |
DOI | https://doi.org/10.1051/bioconf/20191501002 | |
Published online | 23 October 2019 |
Vinos de Altura del Noroeste Argentino – Características físico- químicas y Sensoriales
High-Altitude Wines from Northwest Argentina - Physical - Chemical and Sensory Characteristics
1 Instituto Nacional De Vitivinicultura, Delegación Cafayate, Cafayate, Argentina
2 Instituto Nacional De Vitivinicultura, Departamento de Estudios Enológicos y Sensoriales, Subgerencia de Investigación para la Fiscalización, Mendoza, Argentina
3 Centre National de la Recherche Scientifique (CNRS), Francia
Se evaluaron 168 vinos experimentales, variedades Malbec, Cabernet Sauvignon, Syrah, y Tannat, de las cosechas 2014, 2015, y 2016, correspondientes a 24 viñedos de altura de las provincias de Salta y Jujuy, ubicados a altitudes desde 1575 hasta 2756 m.s.n.m. Los vinos fueron supeditados a análisis físico-químicos y sensoriales. Los datos físico químicos fueron analizados a través de ANOVA y Regresión Lineal Simple. Las similitudes y diferencias estadísticas de los datos sensoriales fueron evaluados mediante análisis de varianza (ANOVA), comparación múltiple de medias a través del test de Fisher (LSD), y análisis de componentes principales (PCA). Cada viñedo contó con un sensor de temperatura a través de los cuales se recopilaron datos a lo largo de todo el ciclo de la vid (años 2013 a 2015). Las temperaturas se utilizaron para la determinación de índices bioclimáticos de Winkler, Huglin e Índice de Noches Frescas. Los resultados indicarían una marcada influencia de las temperaturas y altitud en las variables del vino, principalmente las relacionadas al color y demás características sensoriales (P < 0.001,0.01 y 0.05), mostrando diferencias significativas entre los vinos de una misma variedad, provenientes de viñedos ubicados en distintas zonas vitícolas de características topográficas y de altitud diferentes.
Abstract
168 experimental wines were evaluated from Malbec, Cabernet Sauvignon, Syrah, and Tannat varieties, corresponding to 2014, 2015, and 2016 harvests, and 24 vineyards (provinces of Salta and Jujuy, located at altitudes from 1575 to 2756 m.a.s.l.). The similarities and statistical differences of the sensory data were evaluated by analysis of variance (ANOVA), and Multiple Comparison of Means through Fisher's test (LSD), and Principal Components Analysis (PCA). Each vineyard had a temperature sensor through which data was collected throughout the grapevine cycle (years 2013 to 2015). The temperatures were used for the determination of bioclimatic indices of Winkler, Huglin and Fresh Nights Index. The results would indicate a marked influence of the temperatures and altitude in the wine variables, mainly those related to color and other sensory characteristics (P < 0.001,0.01 and 0.05), showing significant differences between the wines of the same variety, coming from vineyards located in different viticultural zones of different topographic and altitude characteristics.
© The Authors, published by EDP Sciences, 2019
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