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Título:
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Towards a sustainable utilization of Tannat grape seeds : extraction of bioactive compounds through green technologies and waste revalorization
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Autores:
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CARLA BONIFACINO, Autor ;
CECILIA DAUBER, Autor ;
ANALÍA MARTÍNEZ, Autor ;
FLORENCIA TOURNÉ, Autor ;
BRUNO ALEJANDRO IRIGARAY GONZÁLEZ, Autor ;
IGNACIO VIEITEZ, Autor ;
ABIRACHED, CECILIA, Autor
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Tipo de documento:
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documento electrónico
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Fecha de publicación:
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2026
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ISBN/ISSN/DL:
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69811
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Dimensiones:
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10 p. / tablas, gráficos
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Nota general:
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En: The Journal of Supercritical Fluids, 230, 106850. DOI: https://doi.org/10.1016/j.supflu.2025.106850
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Langues:
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Inglés
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Clasificación:
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ALIMENTOS FUNCIONALES
ELABORACIÓN DE ALIMENTOS
PUBLICACIONES TÉCNICOS LATITUD
UVAS DE MESA
VINO
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Resumen:
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Valorizing wine industry by-products like Tannat grape seeds offers a sustainable path to recover high-value bioactives and reduce environmental impact. This study aims to achieve their comprehensive value-added utilization by comparing extraction methods to obtain bioactive compounds of interest and by characterizing the functional properties of the solid residue remaining after extraction. Three extraction techniques were applied: the conventional Soxhlet method, using either absolute ethanol or hexane, supercritical fluid extraction (SFE) and pressurized liquid extraction (PLE), assessing the effects of temperature and ethanol concentration on extraction yield and antioxidant properties. Under optimal conditions (80 °C and 67 % ethanol), PLE achieved a higher yield than the conventional method, with elevated α-tocopherol content (844.4 ± 15.3 mg/kg mg/kg) and a lipid fraction dominated by polyunsaturated fatty acids, primarily linoleic acid. This fraction showed significant antioxidant capacity as determined by the ABTS and ORAC-FL assays and, in an accelerated oxidation test, increased the induction period of sunflower oil in a concentration-dependent manner, with an effect comparable to that of the synthetic antioxidant BHA. The solid residue generated after PLE was evaluated for its techno-functional properties. It exhibited higher water-holding capacity compared with untreated ground seeds, possibly due to its higher relative fiber content and structural changes induced by processing. Furthermore, the residue retained residual bioactive properties, highlighting its potential as a functional ingredient. Overall, these results support the use of PLE as an efficient strategy for the integral and sustainable utilization of Tannat grape seeds.
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Creative Commons :
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CC BY
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Fin de embargo :
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26/04/2028
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En línea:
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https://www.sciencedirect.com/science/article/abs/pii/S0896844625003377
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