Abstract
Influence of maceration on phenolic content and antiradical activity was analyzed in fourteen white wines from Italian region Friuli–Venezia Giulia and Croatian region Istria. Total phenols were determined by Folin–Ciocalteu reagent, twelve individual polyphenols were determined by high-performance liquid chromatography and antiradical activity was determined using 2,2-diphenyl-1-picrylhydrazyl free radical (DPPH·). The experiments showed that the maceration process increases significantly the amount of total phenols and inhibition of DPPH·. Furthermore, a high synergistic activity of individual phenols was observed. The strongest inhibition of DPPH· and the highest amount of total phenols were obtained for 800 Bianco, a blending macerated wine made from 3 white wine varieties. Our study shows that the antioxidant potential of white grape phenols can be preserved during wine processing. The maceration step allows the extraction of phenolic compounds from grape skins, seeds and stalks, resulting in phenol-rich white wine with strong antioxidant properties.
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Ružić, I., Škerget, M., Knez, Ž. et al. Phenolic content and antioxidant potential of macerated white wines. Eur Food Res Technol 233, 465–472 (2011). https://doi.org/10.1007/s00217-011-1535-4
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DOI: https://doi.org/10.1007/s00217-011-1535-4