Abstract
Abstract. This study was conducted to determine antioxidant properties and phytochemicals of brown algae Scytosiphon lomentaria (Lyngbye) Link, Cystoseira barbata (Stackhouse) C. Agardh, and Padina pavonica (Linnaeus) Thivy, collected from the Dardanelles (Çanakkale) Strait, Turkey, in February 2018. The antioxidant activity, total carotenoids, condensed tannins, and total content of phenolics and flavonoids in ethanol extracts were quantified. P. pavonica showed the highest antioxidant potential as well as the maximum content of phenolics and carotenoids. The total flavonoid contents changed from 1375.43±2.37 µg/g Ext. (C. barbata) to 2250.92±46.60 µg/g Ext. (S. lomentaria). The highest condensed tannins were found in C. barbata. According to results obtained, C. barbata, S. lomentaria and P. pavonica possess antioxidant activity and could be used in the food and feed industries.
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