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Polyphenol and antioxidant activity of focus algae extracts from Faksafloi Bay (Irminger Sea) and Zavalishin Bay (Barents Sea)

In the coastal waters of the Arctic, the most common species of Fucoids are Fucus vesiculosus, Fucus spiralis, and Ascophyllum nodosum. It was reported that bioactive compounds present in brown algae (such as polyphenols, polysaccharides, proteins, amino acids, etc.) have a variety of biological properties: antioxidant, antiviral, antibacterial, anticoagulant, etc. Extraction of biologically active substances from macroalgae in order to obtain products with the necessary properties is based on several factors: the chemical composition of the raw material, which depends on the conditions of the collection sites, as well as the nature of the solvent, the extraction method, etc. This paper presents the results of a comparative study of extracts from three Fucaceae family species collected on the coast of the Barents Sea and the Irminger Sea (West Iceland) for polyphenol content. The antioxidant activity of the extracts was also determined by reaction with 2,2-diphenyl-1-picrylhydrazyl (DPPH). It was shown that the content of polyphenols in extracts depends on the places of collection of algae, and their antioxidant activity does not differ significantly, which suggests the presence of other antioxidants in the extracts.