Abstract
Objective: Many diseases are associated with oxidative stress caused by free radicals. The present study is carried out to perform the in vitro antioxidant activity of ethanolic extract from green alga, Mougeotiascalaris. Methods: the ethanolicextractof Mougeotiascalaris was tested for total antioxidant assay, DPPH(1, 1-diphenyl-2-picrylhydrazyl) assay, reducing power assay, nitric oxide scavenging activity and hydrogen peroxide scavenging. Results: the total antioxidant assay was observed as 44.71 ± 0.51 %. The ethanolic extract of Mougeotiascalaris showed 69.86 ± 1.43% in DPPH assay, reducing power assay of 81.21 ± 1.43%, nitric oxide scavenging activity of 59.28 ± 1.94%and the hydrogen peroxide scavenging activity of 75.68± 1.29%. Conclusion: the present study revealed that Mougeotiascalariscan be act as natural antioxidant source for food preservation and protection from degenerative diseases. Key words: Green alga, Mougeotiascalaris, Antioxidant activity, DPPH, reducing power assay.