Antioxidant properties and phytochemicals of three brown macro algae from the Dardanelles (Çanakkale) Strait

A.K. Ilknur1*, G. Turker2

1Department of Aquaculture, Faculty of Marine Sciences and Technology, Canakkale Onsekiz Mart University, 17100 Canakkale, Turkey 2Department of Food Technology, Canakkale School of Applied Sciences, Canakkale Onsekiz Mart University, 17100 Canakkale, Turkey

((Manuscript received 17 May 2018; accepted for publication 26 August 2018))

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.