title: Vitis vinifera L. cv Pinot noir pomace and lees as potential sources of bioactive compounds.
abstract: Food and agricultural industries generate substantial quantities of phenolic-rich by-products that could be valuable natural sources of antioxidants. The aim of this study was to identify and quantify the phenolic compounds and radical scavenging activities of two by-products (pomace and lees) from Vitis vinifera L. cv Pinot noir. We found a different distribution of phenolic classes (flavanols, flavonols, phenolic acids and stilbenes) and singular scavenging activity against free radicals (hydroxyl, superoxide and peroxyl radicals). The major class of phenolics in pomace was flavanols and in lees was flavonols, with catechin (117.9 ± 2.5 μg g(-1)) and quercetin (42.4 ± 1.2 μg g(-1)) being the most abundant individual compounds. We also found high potential on scavenging activity against superoxide radicals in pomace (80% of scavenging activity) and radical peroxyl (67% scavenging activity). These results show the possibility of using Pinot noir by-products as promising additives or as a source for the development of new products in different segments of the food and cosmetic industries.
authors.affiliation: a Post-Graduate Program in Pharmaceutical Sciences , Federal University of Santa Maria (UFSM) , Santa Maria , Brazil ;
authors.forename: Gabriel M
authors.initials: GM
authors.lastname: Reis
authors.affiliation: b Department of Chemistry , UFSM , Santa Maria , Brazil ;
authors.forename: Henrique
authors.initials: H
authors.lastname: Faccin
authors.affiliation: a Post-Graduate Program in Pharmaceutical Sciences , Federal University of Santa Maria (UFSM) , Santa Maria , Brazil ;|c Center of Health Sciences, UFSM , Santa Maria , Brazil.
authors.forename: Carine
authors.initials: C
authors.lastname: Viana
authors.affiliation: a Post-Graduate Program in Pharmaceutical Sciences , Federal University of Santa Maria (UFSM) , Santa Maria , Brazil ;|b Department of Chemistry , UFSM , Santa Maria , Brazil ;
authors.forename: Marcelo Barcellos da
authors.initials: MB
authors.lastname: Rosa
authors.affiliation: a Post-Graduate Program in Pharmaceutical Sciences , Federal University of Santa Maria (UFSM) , Santa Maria , Brazil ;|b Department of Chemistry , UFSM , Santa Maria , Brazil ;
authors.forename: Leandro M
authors.initials: LM
authors.lastname: de Carvalho
mesh_terms: D000975:Antioxidants / Q000032:analysis*; D002392:Catechin / Q000032:analysis; D002851:Chromatography, High Pressure Liquid; D005419:Flavonoids / Q000032:analysis; D044948:Flavonols / Q000032:analysis; D005638:Fruit / Q000737:chemistry*; D062385:Hydroxybenzoates / Q000032:analysis; D010636:Phenols / Q000032:analysis*; D011794:Quercetin / Q000032:analysis; D013267:Stilbenes / Q000032:analysis; D053719:Tandem Mass Spectrometry; D027843:Vitis / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D005419:Flavonoids; D044948:Flavonols; D062385:Hydroxybenzoates; D010636:Phenols; D013267:Stilbenes; C404987:flavan-3-ol; D002392:Catechin; D011794:Quercetin; C017616:phenolic acid
keywords: By-product analysis; Vitis vinifera L. cv Pinot noir; by-product composition; catechin; flavanols; quercetin; radical scavenging activity