title: Monitoringtrans-Resveratrol in Grape Berry Skins During Ripening and in Corresponding Wines by HPLC.
abstract: Trans-resveratrol (3,5,4'-trihydroxy-trans-stilbene) is naturally present in the skin of grapes and therefore is expected to occur in grape products. Recently, there has been a renewal of interest in wine as medical treatment for various disorders. In this study, berry skins of five red grape varieties were analysed at weekly intervals fortrans-resveratrol production, during 2012 and 2013 harvest. The obtained wines were also evaluated. Quantification oftrans-resveratrol in grape skin extracts and wines was carried out by high-performance liquid chromatography. Favourable viticultural climate during harvest in 2012 resulted in a higher content oftrans-resveratrol. The highesttrans-resveratrol content was in Pinot Noir and Feteasca Neagra grape varieties, both in berry skins and wines, while the lowest amounts were identified in Cabernet Sauvignon variety. We can conclude that there was a significant correlation between the content oftrans-resveratrol in grape skins and that in the respective wine.
authors.affiliation: National R&D Institute for Cryogenics and Isotopic Technologies - ICIT Rm. Valcea, 4th Uzinei Street, PO Raureni, Box 7, RO-240050 Rm. Valcea, Romania.
authors.forename: Elisabeta I
authors.initials: EI
authors.lastname: Geana
authors.affiliation: National R&D Institute for Cryogenics and Isotopic Technologies - ICIT Rm. Valcea, 4th Uzinei Street, PO Raureni, Box 7, RO-240050 Rm. Valcea, Romania.
authors.forename: Oana R
authors.initials: OR
authors.lastname: Dinca
authors.affiliation: National R&D Institute for Cryogenics and Isotopic Technologies - ICIT Rm. Valcea, 4th Uzinei Street, PO Raureni, Box 7, RO-240050 Rm. Valcea, Romania.
authors.forename: Roxana E
authors.initials: RE
authors.lastname: Ionete
authors.affiliation: Research Station for Viticulture and Oenology Murfatlar, RO-905100 Murfatlar, Romania.
authors.forename: Victoria
authors.initials: V
authors.lastname: Artem
authors.affiliation: National R&D Institute for Cryogenics and Isotopic Technologies - ICIT Rm. Valcea, 4th Uzinei Street, PO Raureni, Box 7, RO-240050 Rm. Valcea, Romania.
authors.forename: Violeta C
authors.initials: VC
authors.lastname: Niculescu
keywords: HPLC; antioxidant activity; grape; trans-resveratrol; wine