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Berry fruits are a rich source of phenolic compounds with health benefits.Â  Phenolic compounds occur in berries mainly as a variety of conjugated forms, mostly with sugars. Â The aim of this work was to evaluate and compare the phenolic content and antioxidant potential in the most common fruits consumed in Romania: blueberry, blackberries, raspberry and cranberries. Folin-Ciocalteu method has been used in order to evaluate total phenolic content of analyzed berries. Antioxidant activity was determinate using ORAC assay which measures the decrease of AAPH-radical level by the scavenging action of the antioxidant substance. In addition, the vitamin C content and total tannins of the berries extracts were determined using spetophomotmetric methods. The phenolic contents and antioxidant potential of analyzed berries did not varied considerably. The highest amounts of TPC and the strongest antioxidant activities were found in blueberry and blackberries (678 GAE mg/100 g FW, 442 mg/100g FW respectively). Vitamin C content was found in higher concentration in raspberries 21.7 mg/100 g FW while the lower concentration was found in blackberry. Â All berries contain higher levels of bioactive compounds such as polyphenols or tannins which are responsible for their antioxidant potential and bring their nutritional value, being highly recommended for daily consumption .

Phenolic Content and Their Antioxidant Activity in Various Berries Cultivated in Romania