African Journal of Agriculture and Food Security

African Journal of Agriculture and Food Security ISSN 2375-1177 Vol. 7 (9), pp. 001-005, September, 2019. © International Scholars Journals

Full Length Research Paper

Evaluating antioxidant property of brown ALGA Colpomenia sinuosa (DERB. ET SOL)

Lekameera. R, P. Vijayabaskar and S. T. Somasundaram*

Centre of Advanced Study in Marine Biology, Annamalai University, Parangipettai –608 502, Tamilnadu, India.

Accepted 21 June, 2019

Abstract

The brown alga, Colpomenia sinuosa was subjected to DPPH (1,1- diphenyl-2-picryl hydrazyl), nitric oxide radical, hydrogen peroxide, scavenging of ABTS radical and Total antioxidant capacity (TAC) inhibitory assays to assess its antioxidant property. The dimethyl sulphoxide (DMSO) and methanol extracts showed highest antioxidant activity in DPPH (96.56 and 88.57%), nitric oxide radical (81.2 ± 4.1% and 76.69 ± 3.1 %), hydrogen peroxide (70.7 ± 3.5 and 56.6 ± 2.0%) and ABTS (76.8 ± 3.8% and 74.0 ± 2.8%). The moderate activity was observed in total antioxidant capacity (60.3 ± 4.3 and 57.0 ± 2.0) assay. The activity was higher and comparable to that of commercial antioxidants butylated hydroxy anisole (BHA) (87.38 ± 1.32%) and butylated hydroxy tolune (BHT) (56.05 ± 0.19%) at 2 mg/ml concentration. The significant free radical scavenging activity of C. sinuosa indicated that it could be a potential source for natural antioxidant lead molecules.

Key words: ABTS, Colpomenia sinuosa, DPPH, hydrogen peroxide, nitric oxide radical.