Evaluation of in-vitro Antioxidant Potential, and Screening and Characterization of Phytochemicals Using hydroethanolic Leaf Extract of Caesalpinia Pulcherrima

Introduction: Novel Therapeutic Phytochemical studies are based on the use of plants in the production of drugs. The present study was carried out to perform the screening of phytochemicals and their quantitative analysis to assess in-vitro antioxidant activities of the hydroethanolic leaf extract of Caesalpinia Pulcherrima. FT-IR and GC-MS analyses of hydroethanolic leaf extract of Caesalpinia pulcherrima were also conducted. Methods: The investigation of qualitative and determination of quantitative phytochemical analysis were performed using standard procedures. The total alkaloid, flavonoid, phenols, and tannin content were determined spectrophotometrically. DPPH (2,2-Diphenyl-1-picrylhydrazyl) free radical scavenging activity and ABTS (2,2’-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid)) free radical scavenging activity of hydroethanolic leaf extract of Caesalpinia pulcherrima were estimated by standard protocol. The identification of functional groups was made using plant leaf extracts by FTIR and GCMS. Results: The hydroethanolic leaf extract of Caesalpinia Pulcherrima gives positive results for alkaloids, flavonoids, phenols, carbohydrates, tannins, amino acids, and proteins. The content of total alkaloids, flavonoids, phenols, and tannins varies from 8.4 AE/g, 3.3 CE/g, 2.9, and 3.2 GAE/g, respectively. The antioxidant assay and IC50 values were found to be DPPH (43.3μg/ml), ABTS (46.1 μg/ml), and ascorbic acid (41μg/ml), respectively and concentration ranging from 20 to 100 μg/ml. Functional groups were also identified using the extract by FTIR and GCMS. Conclusion: From this work, it can be concluded that the presence of phyto-component makes the plant useful in the treatment of various diseases. As such, it has been found that the hydroethanolic leaf extract of the plant contains more components and is beneficial for further research.