title: Mineral content  is related to antioxidant and antimutagenic properties of grape juice.
abstract: Grape  juices are an important source of food antioxidants. Unfortunately, there is  little data about the mineral composition and the antioxidant, mutagenic and  antimutagenic activities of grape juice in eukaryote cells. We evaluated the  mineral contents (Mg, Ca, Mn, Fe, Cu, Zn, Si, S, Cl) of grape juices, the  antioxidant, mutagenic and/or antimutagenic activities of the juices in the  yeast Saccharomyces cerevisiae, and looked for a possible association  between mineral content and antioxidant, mutagenic and/or antimutagenic  activities of juice samples. Eight commercial grape juices, four purple (Bordo  variety) and four white (Niagara variety), were evaluated. Most of the minerals  were in similar concentrations in purple and white grape juices, except for  calcium and copper; purple grapes had more calcium content and white grapes had  more copper content. All grape juices had important antioxidant and  antimutagenic activities in S. cerevisiae and prevented the oxidative  damage provoked by hydrogen peroxide (P < 0.05). Positive correlations (P  < 0.05) were observed between antioxidant and antimutagenic activities and  mineral content. In this context, we concluded that the grape juices, white and  purple, are an important mineral source, and these contents explain, in part,  the important antioxidant and antimutagenic activities.
authors.affiliation: Instituto de Biotecnologia, Universidade de Caxias do Sul, Caxias do Sul, RS, Brasil.
authors.forename: C
authors.initials: C
authors.lastname: Dani
authors.forename: L S
authors.initials: LS
authors.lastname: Oliboni
authors.forename: D
authors.initials: D
authors.lastname: Pra
authors.forename: D
authors.initials: D
authors.lastname: Bonatto
authors.forename: C E I
authors.initials: CE
authors.lastname: Santos
authors.forename: M L
authors.initials: ML
authors.lastname: Yoneama
authors.forename: J F
authors.initials: JF
authors.lastname: Dias
authors.forename: M
authors.initials: M
authors.lastname: Salvador
authors.forename: J A P
authors.initials: JA
authors.lastname: Henriques
mesh_terms: D000483:Alleles; D016587:Antimutagenic Agents / Q000494:pharmacology*; D000975:Antioxidants / Q000494:pharmacology*; D001628:Beverages / Q000032:analysis*; D003300:Copper / Q000032:analysis; D016368:Frameshift Mutation / Q000235:genetics; D006861:Hydrogen Peroxide / Q000494:pharmacology; D050296:Microbial Viability; D008903:Minerals / Q000032:analysis*; D010636:Phenols / Q000032:analysis; D017354:Point Mutation / Q000235:genetics; D012441:Saccharomyces cerevisiae / Q000166:cytology; D027843:Vitis / Q000737:chemistry*; D015032:Zinc / Q000032:analysis
chemical_list: D016587:Antimutagenic Agents; D000975:Antioxidants; D008903:Minerals; D010636:Phenols; D003300:Copper; D006861:Hydrogen Peroxide; D015032:Zinc