title: Determination of trans-resveratrol in Solanum americanum Mill. by HPLC.
abstract: Solanum americanum Mill. is a plant that belongs to the Solanaceae family, its respective ripe fruit is dark purple. Ripe S. americanum Mill. fruits were submitted to physicochemical characterisation, and their trans-resveratrol contents were quantified by high-performance liquid chromatography. Such determination was executed with fruits at different stages of ripeness and freeze-stored fruits as well. In natura ripe fruit pulp and peel presented average trans-resveratrol amounts of 1.07 and 0.7960 μg per gram of sample, respectively. These amounts are significantly higher when compared to freeze-stored fruit (0.1353 μg of trans-resveratrol per gram of sample) and to other berries. All ripe fruits showed significant amounts of total anthocyanins and total antioxidants. Thus, for the first time, trans-resveratrol has been identified and quantified in S. americanum Mill. fruit samples.
authors.affiliation: a Department of Food Chemistry , State University of Maringá , Maringá , Brazil.
authors.forename: Julianna Matias
authors.initials: JM
authors.lastname: Vagula
authors.affiliation: b Department of Chemistry , Federal Technological University of Paraná , Londrina , Brazil.
authors.forename: Janksyn
authors.initials: J
authors.lastname: Bertozzi
authors.affiliation: a Department of Food Chemistry , State University of Maringá , Maringá , Brazil.
authors.forename: Juliana Cristina
authors.initials: JC
authors.lastname: Castro
authors.affiliation: c Department of Chemistry , State University of Maringá , Maringá , Brazil.
authors.forename: Claudio Celestino de
authors.initials: CC
authors.lastname: Oliveira
authors.affiliation: a Department of Food Chemistry , State University of Maringá , Maringá , Brazil.
authors.forename: Edmar
authors.initials: E
authors.lastname: Clemente
authors.affiliation: c Department of Chemistry , State University of Maringá , Maringá , Brazil.
authors.forename: Oscar de Oliveira
authors.initials: Ode O
authors.lastname: Santos Júnior
authors.affiliation: c Department of Chemistry , State University of Maringá , Maringá , Brazil.
authors.forename: Jesuí Vergilio
authors.initials: JV
authors.lastname: Visentainer
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D005638:Fruit / Q000737:chemistry; D000077185:Resveratrol; D032322:Solanum / Q000737:chemistry*; D013267:Stilbenes / Q000032:analysis*
chemical_list: D013267:Stilbenes; D000077185:Resveratrol
keywords: 3,4,5-Trihydroxystilbene; anthocyanins; antioxidant; composition; polyphenol; stilbene