title: The Use of Grape Seed Byproducts Rich in Flavonoids to Improve the Antioxidant Potential of Red Wines.
abstract: The influence of adding seeds from grape pomace during Syrah wine fermentation in a warm climate has been studied. Seeds of Pedro Ximenez variety were rich in phenolic compounds, mainly flavonoids such as catechin and procyanidins. Changes in total phenolic content (TPC), total flavonoid content (TFC), and antioxidant activity of red wines were observed. These changes depended on the vinification stage and the amount of seeds (SW: 450 g or DW: 900 g seeds/150 kg grapes) applied. In general, antioxidant activity was greater when a simple dose (SW) was considered. Results indicate that seeds rich in flavonoids could be used as wine additives, which could improve the antioxidant potential of red wines in a warm climate.
authors.affiliation: Food Colour & Quality Laboratory, Department of Nutrition & Food Science, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain. mjara@us.es.
authors.forename: María José
authors.initials: MJ
authors.lastname: Jara-Palacios
authors.affiliation: Department of Analytical Chemistry, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain. vila@us.es.
authors.forename: Dolores
authors.initials: D
authors.lastname: Hernanz
authors.affiliation: Food Colour & Quality Laboratory, Department of Nutrition & Food Science, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain. gilete@us.es.
authors.forename: María Luisa
authors.initials: ML
authors.lastname: Escudero-Gilete
authors.affiliation: Food Colour & Quality Laboratory, Department of Nutrition & Food Science, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain. heredia@us.es.
authors.forename: Francisco J
authors.initials: FJ
authors.lastname: Heredia
mesh_terms: D000975:Antioxidants / Q000032:analysis*; D005285:Fermentation; D005419:Flavonoids; D010636:Phenols / Q000737:chemistry / Q000494:pharmacology; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D012639:Seeds / Q000737:chemistry; D027843:Vitis / Q000737:chemistry*; D014920:Wine / Q000032:analysis*
chemical_list: D000975:Antioxidants; D005419:Flavonoids; D010636:Phenols; D010936:Plant Extracts
keywords: antioxidant activity; flavonoids; grape pomace; red wine; seeds