Location Effects on the Polyphenolic and Polysaccharidic Profiles and Colour of Carignan Grape Variety Wines from the Chilean Maule Region
Cejudo Bastante, María Jesús | del Barrio Galán, Rubén | Heredia Mira, Francisco José | Medel Marabolí, Marcela | Peña Neira, Álvaro | Universidad de Sevilla. Departamento de Nutrición y Bromatología, Toxicología y Medicina Legal | Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT). Chile
This paper reports on a study of chemical characterization and colour parameters of cv. Carignan red wines from six locations and two production years of the Chilean Maule valley. The chemical study was performed on polyphenolic composition (benzoic acids, hydroxycinnamic acid derivatives, stilbenes, flavan-3-ols, flavonols and anthocyanins) and several fractions of proanthocyanidins and polysaccharides. Results revealed that although significantly (p < 0.05) different content of anthocyanins were observed according to the production year, it could be possible to establish fingerprints of the different locations of the Maule valley wines. Thus, wines from zones closer to the Andes Mountains had higher content of procyanidin B3 (Caliboro), polysaccharides and cis-resveratrol-glucoside (Loncomilla and Melozal), whereas the proximity to the Pacific Ocean provoked a unifying effect in chemical and colorimetric terms (Cauquenes, Sauzal and Huerta del Maule).
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