• Gowtham R
• Umamaheswari
• Bavani S
• Ambikapathy

The determination of the antioxidant activity of selected medicinal plants namely Thespesia populnea and Abutilon indicum L. leaves has been studied using different solvents of aqueous, diethyl ether and methanol extracts were used. Invitro antioxidant potential of leaves of T.populnea leaf and A. indicum L. with three different methods like hydrogen peroxide scavenging (H2O2) assay, reducing power assay and Thiobarbataric acid was evaluated. The three solvent extracts with different concentration of 0.2, 0.4, 0.6, 0.8 and 1.0 percentage were prepared. Determination of antioxidant assay of different concentration of plant extract for more suitable in Thiobarbataric acid activity than the other methods. The aqueous, methanol and diethyl ether extract of T. populnea (1%) has excellent percentage of activity when compared with low concentration of plant extract whereas A.indicum leaves with aqueous, methanol and diethyl ether extract also moderate percentage of activity from reducing power assay were observed. In comparison, the antioxidant activity of maximum percentage of activity in Abutilon indicum leaves when compared with Thespesia populnea . These observations confirm that methanolic extract of Thespesia populnea and Abutilon indicum leaves have different polyphenolic constituents and its importance in antioxidant activity.

Medicinal plants, solvents

"Antioxidant activity of medicinal plants in Thespesia populnea L. and Abutilon indicum L. by various methods", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.556-564, May-2019, Available :http://www.jetir.org/papers/JETIR1905282.pdf

"Antioxidant activity of medicinal plants in Thespesia populnea L. and Abutilon indicum L. by various methods", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp556-564, May-2019, Available at : http://www.jetir.org/papers/JETIR1905282.pdf