Polyphenols in red wine aged in acacia (Robinia pseudoacacia) and oak (Quercus petraea) wood barrels.
Polyphenolic composition of two Syrah wines aged during 6 or 12 months in medium toasting acacia and oak 225L barrels was studied by LC-DAD-ESI/MS. A total of 43 nonanthocyanic phenolic compounds were found in all wines, and other 15 compounds only in the wines from acacia barrels. Thus, the nonanthocyanic phenolic profile could be a useful tool to identify the wines aged in acacia barrels. Among all of them the dihydrorobinetin highlights because of its high levels, but also robinetin, 2,4-dihydroxybenzaldehyde, a tetrahydroxydihydroflavonol, fustin, butin, a trihydroxymethoxydihydroflavonol and 2,4-dihydroxybenzoic acid were detected at appreciable levels in wines during aging in acacia barrels, and could be used as phenolic markers for authenticity purposes. Although longer contact time with acacia wood mean higher concentrations of phenolic markers found in wines, the identification of these wines will also be easy after short aging times due the high levels reached by these compounds, even after only 2 months of aging.
I+D+I Industrial Tonelera Navarra SL (INTONA), 31522 Monteagudo, Navarra, Spain.
Miriam
M
Sanz
Brígida
B
Fernández de Simón
Enrique
E
Esteruelas
Angel Ma
AM
Muñoz
Estrella
E
Cadahía
Ma Teresa
MT
Hernández
Isabel
I
Estrella
Juana
J
Martinez
D000045:Acacia / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D059808:Polyphenols / Q000032:analysis*; D029963:Quercus / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization; D013997:Time Factors; D014920:Wine / Q000032:analysis*
D059808:Polyphenols