Author(s):

Ankita Mridha, Camellia Nandi, Ruma Pal and Santanu Paul

Abstract: This work explores the different antioxidant potential of methanolic extract of six different fresh water green algae of India. Among the six algal species studied Spirogyra triplicata shows the highest total phenolic content of 134.23 ± 4.45 mg GAE/g and total flavonoid content of 195.93 ± 0.41 mg QE/g extract. Spirogyra triplicata also showed the highest lipid peroxidation and DPPH scavenging activity, Superoxide anion scavenging, Nitric oxide and Catalase activity with an EC₅₀ value of 7.2 ± 0.84 μg/ml, 50 ± 1.43 μg/ml, 17± 3.12 μg /ml, 30 ± 4.7 μg /ml and 15 ± 1.32 μg /ml respectively. Taken together date reflects that Spirogyra triplicata possesses highest Phenol and Flavonoid content exhibiting greatest DPPH scavenging and Lipid peroxidation activity in a pool of six green algal species studied. It also shows good anti-oxidant property as evidenced by different inhibition data there by suggesting presence of various efficacious compounds. Further analysis of these algae will help in identification and isolation of lead molecules for future drug development.

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