Issue |
BIO Web Conf.
Volume 68, 2023
44th World Congress of Vine and Wine
|
|
---|---|---|
Article Number | 04004 | |
Number of page(s) | 8 | |
Section | Health | |
DOI | https://doi.org/10.1051/bioconf/20236804004 | |
Published online | 23 November 2023 |
Valorización de lías de vino como ingredientes antihipertensivos
Wine lees valorization as antihypertensive ingredients
1 Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Nutrigenomics Research Group, 43007 Tarragona, Spain
2 Nutrigenomics Research Group, Institut d’Investigació Sanitària Pere Virgili. C/ Marcel·lí Domingo s/n, 43007 Tarragona, Spain
Algunos coproductos vitivinícolas se han utilizado para obtener extractos enriquecidos en (poli)fenoles con efectos antihipertensivos. Sin embargo, aún se desconoce si las lías de vino (LV) contienen compuestos antihipertensivos. Este estudio se centró en estudiar si las LV podría ser fuente de estos compuestos. Se evaluó la actividad antihipertensiva de cinco LV (fracción líquida, 5 mL/kg) en ratas hipertensas (SHR). Una de las LV mostró un fuerte efecto antihipertensivo, que se asoció con su alto contenido en flavanoles y antocianinas. La reducción del estrés oxidativo y mejora del estado redox y disfunción endotelial fueron algunos mecanismos involucrados en su bioactividad. Además, las LV se sometieron a extracción asistida por enzimas (Flavourzyme®), lo cual solubilizó compuestos fenólicos (57.20%) inicialmente no solubles. Ácido gálico, catequina y malvidina-3-glucósido fueron los principales (poli)fenoles de este hidrolizado. Además, el hidrolizado mostró una mayor actividad inhibitoria de la enzima convertidora de angiotensina, antioxidante y antihipertensiva que las LV. Los péptidos FKTTDQQTRTTVA, NPKLVTIV, TVTNPARIA, LDSPSEGRAPG y LDSPSEGRAPGAD, identificados en el hidrolizado, exhibieron actividad antihipertensiva en SHR (10 mg/kg). LV son una buena fuente de compuestos antihipertensivos con potencial para usarse como nutracéuticos o ingredientes funcionales. Esto permitiría la valorización de las mismas y contribuiría a la economía circular de la industria vitivinícola.
Abstract
Some winery by-products have been used to obtain phenolic-enriched extracts with antihypertensive effects. However, the presence of antihypertensive compounds in wine lees (WL) remains unexplored. Therefore, the aim of our study was to evaluate whether WL could be a source of antihypertensive compounds. The blood pressure-lowering effect of the liquid fraction of five WL was evaluated in spontaneously hypertensive rats (SHR) after acute administration (5 mL/kg). One of the tested WL exhibited potent antihypertensive effects, which were associated with their high content of flavanols and anthocyanins. Their bioactivity was mediated by a reduction in oxidative stress and an improvement in the redox state and endothelial dysfunction. Furthermore, WL were subjected to enzyme-assisted extraction (Flavourzyme®), which released non-soluble (poly)phenols (57.20%). Gallic acid, catechin, and malvidin-3-glucoside were the major phenolic compounds in this hydrolysate. Moreover, it showed greater angiotensin-converting enzyme inhibitory, antioxidant, and antihypertensive activities than the one shown by WL. Additionally, the peptides FKTTDQQTRTTVA, NPKLVTIV, TVTNPARIA, LDSPSEGRAPG, and LDSPSEGRAPGAD identified in the hydrolysate exhibited antihypertensive activity in SHR (10 mg/kg). Thus, WL is a good source of antihypertensive compounds with the potential to be used as nutraceuticals or functional ingredients. This would allow WL valorization and contribute to circular economy in wineries.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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