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Effect of time on total phenolic content (TPC) (a), total anthocyanin content (TAC) (b), and total flavanol content (TFC) (c) of organic whole red Grenache grapes. The results are expressed as mg of phenolic equivalents per gram of dry weight (mg Eq/g dw) ± SD (n = 3). Letters represent significant differences (one-way ANOVA; p < 0.05). Abbreviations: gallic acid equivalents (GAE), malvidin-3-O-rutinoside (Mv3R), and catechin (Cat).
