Abstract
Phytochemical analysis is important in the evaluation of bioactive compounds from plants. Oxidative stress has been implicated in the pathology of many diseases such as atherosclerosis, rheumatoid arthritis, cancer, cataract, diabetes, cardiovascular diseases, chronic inflammatory conditions, and stroke. The aim of this study was to evaluate polyphenolic content and antioxidant activity of Trema orientalis. Antioxidant activity was estimated spectrophotometrically using 2,2– diphenyl–1–picrylhydrazyl radical scavenging method. The total polyphenolic and flavonoid contents of the Trema orientalis extracts were determined using standard methods. IndependentSample T–test was used for Data analyses. Phytochemical screening revealed the presence of saponins, tannins, steroids, cardiac glycosides, alkaloids, triterpenes, flavonoids and phenolic compounds. Total phenolic contents were found to be 260.96±2.31 mg GAE/g and 134.08±0.56 mg GAE/g in the ethanol and aqueous extracts respectively. Similarly, total flavonoid contents were between 32.71±0.89 and 4.70±0.23 mg GAE/g. The radical scavenging effect was observed in ethanol extract with IC50 = 9.27 µg/mL. The abundance of polyphenolic compounds and antioxidant activities of the T. orientalis could confirm their good therapeutic potentials inethnobotany.
 Keywords: Trema orientalis, Phenols, Flavonoids, Antioxidant activities
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