Antioxidant and antibacterial activities of Cladophora glomerata (L.) Kuetz. in Caspian Sea Coast, Iran

Cladophora is one of the largest filamentous green-algal genus and has a widespread distribution in Caspian Sea Coast. This study aimed at assaying the antimicrobial and antioxidant activities of Cladophora glomerata in South of Caspian sea. The antioxidant activity of the extract was investigated, including the total phenolic contents (3077 plus or minus 105 mg gallic acid equivalent g super(-1) of extract), total flavonoid contents (595 plus or minus 23 mg quercetin equivalent gl super(-1) of extract), scavenging activity of 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals (920 plus or minus 42 mg ml super(-1) as IC sub(50) value), iron chelating activity (IC sub(50) = 971 plus or minus 39 mu g ml super(-1)), scavengers of nitric oxide (0.20 plus or minus 0.01 mg ml super(-1) as IC sub(50)) and reducing power. There were significant differences between the extract and vitamin C (P