title: Tannin composition of cabernet-sauvignon and merlot grapes from the bordeaux area for different vintages (2006 to 2009) and comparison to tannin profile of five 2009 vintage mediterranean grapes varieties.
abstract: The proanthocyandin composition of skins and seeds of Bordeaux Merlot (M) and Cabernet Sauvignon (CS) grapes was evaluated by HPLC-UV-fluorescence for four consecutive vintages (2006 to 2009). The results indicated a strong vintage effect on the tannin profile of each variety. However, and in spite of the vintage effect, some tannin characteristics such as mDP, %G and %P allow discrimination of both Bordeaux varieties. The same analyses were carried out for the 2009 vintage of five Mediterranean grape varieties (Syrah, Grenache, Mourvedre, Carignan and Counoise). The results demonstrated differences among these five varieties. Syrah appeared to exhibit the highest concentrations of flavanol monomers and dimmers, especially in skins. The comparison study between Bordeaux and Mediterranean grape varieties for the same vintage (2009) revealed that mDP and %G for seed extracts were parameters specific to each vineyard area.
authors.affiliation: Faculté d'Oenologie, Institut des Sciences de la Vigne et du Vin, UMR 1219 Œnologie, INRA, Université Victor Ségalen Bordeaux 2, 210 Chemin de Leysotte, 33882 Villenave d'Ornon Cedex, France.
authors.forename: Kleopatra
authors.initials: K
authors.lastname: Chira
authors.forename: Bénédicte
authors.initials: B
authors.lastname: Lorrain
authors.forename: Isabelle
authors.initials: I
authors.lastname: Ky
authors.forename: Pierre-Louis
authors.initials: PL
authors.lastname: Teissedre
mesh_terms: D002851:Chromatography, High Pressure Liquid; D005419:Flavonoids / Q000032:analysis; D005602:France; D008401:Gas Chromatography-Mass Spectrometry; D019083:Mediterranean Region; D010636:Phenols / Q000032:analysis; D059808:Polyphenols; D025341:Principal Component Analysis; D044945:Proanthocyanidins / Q000032:analysis; D012639:Seeds / Q000737:chemistry; D013634:Tannins / Q000032:analysis*; D013997:Time Factors; D027843:Vitis / Q000737:chemistry*; D014920:Wine / Q000032:analysis
chemical_list: D005419:Flavonoids; D010636:Phenols; D059808:Polyphenols; D044945:Proanthocyanidins; D013634:Tannins