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Antioxidant activity of Cladophoropsis sp. alga, from North of Persian Gulf
Antioxidant compounds play an important role against different diseases. They are employed in medicine, cosmetic industry and food production (1). In searching for safe and effective antioxidants from natural resources, marine organisms are a new source (2). In recent years, algae have attracted great attention of researchers as their primary or secondary metabolites can be biologically active (3). They are also rich in proteins, minerals and polysaccharides (2). There are about 153 species of algae in Persian Gulf and Arabian Sea that can be a new source of natural antioxidants (4). The goal of this study was assessing the antioxidant activity and phenolic content of Cladophoropsis sp., from north of Persian Gulf. At the first step, the algae was lyophilized and extracted by 90% ethanol. For examination the antioxidant activity, two methods including radical scavenging test by using DPPH and reducing activity test, were carried out. Phenolic content (antioxidant compound) was also examined by using folin ciocalteu. The results showed radical scavenging activity with IC50=0.9mg/ml and reducing activity with absorbance of 0.5at the concentration of 1.48mg/ml. The IC50 of Gallic acid (0.82µg/ml) as powerful antioxidant standard was less than algal extract (P<0.0001). Its total phenolic content was 2.1mg/g of extract. The results indicate moderate radical scavenging activity and reducing power of alga. In comparison with the others studies, this algae are rich in phenolic compounds.
References: 1. M, Zubia. et al. (2007)J. Appl. Phycol. 19:449–458.
2. M, Zubia. et al. (2009)J. Food Chemistry. 116:693–701.
3. S, Takamatsu. et al. (2003)J. Nat. Prod. 66:605–608.
4. J, Sohrabipour. et al. Iran. Journal. Bot. 8:131–162.