title: Phenolic compounds and antioxidant activity of red wine made from grapes treated with different fungicides.
abstract: The effect of treating grapes with six fungicides, applied under critical agricultural practices (CAP) on levels of phenolic compounds and antioxidant activity of red wines of Monastrell variety was studied. Vinifications were performed through addition of active dry yeast (ADY). Measurement of phenolic compounds was made with HPLC-DAD. Determination of antioxidant activity was through reaction of the wine sample with the DPPH radical. The wine prepared from grapes treated with quinoxyfen shows a greater increase of phenolic compounds than the control wine. In contrast, the wine obtained from grapes treated with trifloxystrobin showed lower total concentration of phenolic compounds, including stilbenes, whilst treatments with kresoxim-methyl, fluquinconazole, and famoxadone slightly reduced their content. Hence, the use of these last four fungicides could cause a decrease in possible health benefits to consumers. Antioxidant activity hardly varied in the assays with quinoxyfen, fluquinconazole and famoxadone, and decreased in the other wines.
authors.affiliation: Department of Food Technology and Nutrition, Catholic University of San Antonio, Murcia, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Mulero
authors.affiliation: Departament of Agricultural Chemistry, Geology and Pedology, University of Murcia, Campus de Espinardo, Murcia, Spain.
authors.forename: G
authors.initials: G
authors.lastname: Martínez
authors.affiliation: Departament of Agricultural Chemistry, Geology and Pedology, University of Murcia, Campus de Espinardo, Murcia, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Oliva
authors.affiliation: Departament of Agricultural Chemistry, Geology and Pedology, University of Murcia, Campus de Espinardo, Murcia, Spain.
authors.forename: S
authors.initials: S
authors.lastname: Cermeño
authors.affiliation: Department of Food Technology and Nutrition, Catholic University of San Antonio, Murcia, Spain.
authors.forename: J M
authors.initials: JM
authors.lastname: Cayuela
authors.affiliation: Department of Food Technology and Nutrition, Catholic University of San Antonio, Murcia, Spain.
authors.forename: P
authors.initials: P
authors.lastname: Zafrilla
authors.affiliation: Department of Food Technology and Nutrition, Catholic University of San Antonio, Murcia, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Martínez-Cachá
authors.affiliation: Departament of Agricultural Chemistry, Geology and Pedology, University of Murcia, Campus de Espinardo, Murcia, Spain. Electronic address: abarba@um.es.
authors.forename: A
authors.initials: A
authors.lastname: Barba
mesh_terms: D000975:Antioxidants; D005659:Fungicides, Industrial; D010636:Phenols / Q000032:analysis*; D027843:Vitis / Q000737:chemistry*; D014920:Wine / Q000032:analysis*
chemical_list: D000975:Antioxidants; D005659:Fungicides, Industrial; D010636:Phenols
keywords: Antioxidant activity; Fungicides; Phenolic compounds; Wine