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Concentrations and composition of ellagitannins and flavano-ellagitannins depending on the ageing period in bottle: (a) Libourne wines; (b) Blaye & Bourges wines; (c) Rioja wines. The ANOVA tests performed compare the values between years in bottle for a given analysis. The different letters indicate a significant difference between the values achieved for total ellagitannins (Tukey’s test, p < 0.05).
