Volume 5, number 2
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Total antioxidant power and free radical scavenging capacity of some medicinal plants

P. K. Rao1, V. Bobbarala2, D. Bhaskar Rao1, Ch. Ravi Kiran1, K. V. Raghava Rao1 and T. Raghava Rao1

1Department of Biochemistry, College of Science & Technology, Andhra University Visakhapatnam - 03 India.

2For U Biosciences, A/4A, Park lane Residency, East point colony, Visakhapatnam, A. P - 530 017 India.

Corresponding Author E-mail: koti_au@yahoo.co.in

ABSTRACT: Current research is now directed towards finding naturally occurring antioxidants of plant origin. The present study was aimed to assess the In vitro antioxidant activity of methanolic leaf extracts of some medicinal plants by carrying the determination of Total Antioxidant power (FRAP Assay) and Free radical scavenging capacity (DPPH Assay) and results were compared with well established antioxidants like Ascorbic Acid and Butylated Hydroxy Toluene(BHT). Our results clearly showed that all the plants of present study showed potent Total Antioxidant power and Free radical scavenging capacity. Of all the plants tested, the highest total antioxidant power and free radical scavenging capacity was shown by X. mekongensis, B. cylindrica and E. agallocha with nearly equal to antioxidant capacity to stable antioxidants like BHT and Ascorbic acid. This data will be useful in estimating the total pharmacological and phytochemical properties of these plants.

KEYWORDS: Reactive oxygen species; DPPH Radical; Ascorbic acid Equivalents; Free radical scavengers

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Rao P. K , Bobbarala V, Rao D. B, Kiran C. R, Rao K. V. R , Rao T. R. Total antioxidant power and free radical scavenging capacity of some medicinal plants. Biosci Biotechnol Res Asia 2008;5(2).
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Rao P. K , Bobbarala V, Rao D. B, Kiran C. R, Rao K. V. R , Rao T. R. Total antioxidant power and free radical scavenging capacity of some medicinal plants. Biosci Biotechnol Res Asia 2008;5(2).Available from:

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