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Abstract

PHYTOCHEMICAL ANALYSES AND ANTIOXIDANT ACTIVITY OF THE METHANOLIC EXTRACTS OF TRIDAX PROCUMBENS LINN. (ASTERACEAE)

Vignesh RM*, Vinod S, Thressiamma Mathews

Department of Botany, Mar Ivanios College, Thiruvananthapuram, Kerala, India.

ABSTRACT

The present study evaluates the phytochemical constituents and in vitro antioxidant activity of Tridax procumbens. The antioxidant potential of the methanol extracts of leaf, stem and flower of Tridax procumbens were tested using different assays such as Reducing power assay, DPPH, hydroxyl, superoxide, nitric oxide, and hydrogen peroxide scavenging assays. The extracts gave positive results for all the assays and the radical scavenging ability was detected to be comparable to those of the corresponding standards which was more prominent in the flower extract. Quantitative estimation of antioxidant phytochemicals such as phenols, flavonoids and proanthocyanidins were also carried out in the methanolic extracts of Tridax procumbens. The flower extract was found to have higher levels of flavonoids and proanthocyanidins than leaf and stem extracts. Thus, the plant would be considered as a potential source of antioxidant phytochemicals.

Keywords: Tridax procumbens, phytochemical screening, antioxidant assays, phenols, flavonoids, proanthocyanidins.


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