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Free Radical Scavenging Activity of “Aglianico”, “Fiano”, and “Greco” grape cane extracts at pH 1.00 (A), 7.00 (B), 13.00 (C), and antioxidant reference compounds. DPPH assay was performed with 5 μg GAE of extracts or pure reference compounds as described in Section 3.4.1. All determinations were performed in triplicate and results were expressed as mean ± SD.
