Phytochemical Profiling and Antioxidant Activity Assessment of Ethanolic Extract of Phyllanthus niruri
Abstract
Introduction: Phyllanthus niruri, recognized as Stonebreaker due to its medicinal value, has been used for centuries in traditional medicine. This plant exhibits significant antioxidant activity due to various bioactive components such as alkaloids, phenols, and flavonoids. Aim: This study aimed at screening for bioactive components and investigating its antioxidant activity. Methods: The aerial parts of plant were harvested, dried and grounded into fine powder. 10 grams of the powdered plant material was soaked in 100ml of ethanol to prepare ethanolic extract. A qualitative examination was conducted to identify the phytochemicals in the sample. DPPH and ABTS assays were performed to determine antioxidant activity. Absorbance was recorded at 517 nm for DPPH and 734 nm for ABTS. In both assays gallic acid was used as reference standard. Results: Many bioactive compounds such as flavonoids, alkaloids, phenols, triterpenoids, tannins, saponin, steroids, glycosides and carbohydrates were identified in plant extract. The plant extract demonstrated notable antioxidant activity showing an IC₅₀ value of 3.12 ± 0.26 μg/ml in the DPPH assay, which was less than gallic acid (IC₅₀ 1.51 ± 0.02 μg/ml). In ABTS assay, IC₅₀ value of plant extract was 19.98±0.09 μg/ml, which is higher than gallic acid (5.69 ± 0.05 μg/ml). Conclusion: Our results revealed potential antioxidant activity of Phyllanthus niruri, which is useful to treat several clinical conditions like inflammation and cellular damage by oxidative stress.
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