• Muthu lakshmi
• R. Padma
• R. Prakash

The antioxidant activity potential of Hygrophila auriculata and Azima tetracantha extracts were investigated against superoxide anion radical while employing cyclic voltammetry technique. The voltammetric response of the electrochemically generated superoxide anion radical in DMSO was monitored in the absence and presence of the plant extracts. The decrease in the current was interpreted in terms of antiradical activity of the added extracts. The thermodynamic feasibility of the radical scavenging by extracts were accounted in terms of antioxidant activity coefficient (Kao), binding constant (Kb) and standard Gibbs free energy (-ΔGo). Cyclic voltammetry is expected to be a simple method for screening antioxidants and estimating the antioxidant activity of foods and medicinal plants.

Antioxidant activity, superoxide anion radical, cyclic voltammetry, binding constant, Hygrophila auriculata, Azima tetracantha.

"Antioxidant Activity Evaluation of Hygrophyila Auriculata and Azima Tetracantha Extracts by An Electrochemical Method", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 3, page no.5-8, March-2019, Available :http://www.jetir.org/papers/JETIRAL06002.pdf

"Antioxidant Activity Evaluation of Hygrophyila Auriculata and Azima Tetracantha Extracts by An Electrochemical Method", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 3, page no. pp5-8, March-2019, Available at : http://www.jetir.org/papers/JETIRAL06002.pdf