Phytochemical investigations, in-vitro antioxidant, antimicrobial potential, and in-silico computational docking analysis of Euphorbia milii Des Moul
Abstract
Euphorbia milii Des Moul is a deciduous bush indigenous to Madagascar. The present study aims to investigate the presence of the phytochemical, in-vitro antioxidant and antimicrobial potency, and in-silico computational analysis of ethanolic and aqueous preparations of E. milii leaves and flowers. The ethanolic and aqueous extracts were tested for in-vitro antioxidant activity by DPPH, H2O2, TAC, and FRAP assay. In addition, antimicrobial potentials were assayed by agar well diffusion technique against Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Staphylococcus aureus, and Candida albicans for various clinical isolates. The qualitative phytochemical analysis results confirmed the existence of alkaloids, flavonoids, phenolics, and tannins. The quantitative analysis elicits the availability of a magnificent number of alkaloids, flavonoids, phenolics, flavonols, and tannins. Among all the extracts, aqueous extracts of leaves exhibited potent antioxidant activity in DPPH, FRAP, and H2O2 assay with the IC50 value of 30.70, 60.05, and 82.92µg/mL, respectively. In agar well diffusion assay, all extracts displayed zone of inhibition varies from 2-24mm at different concentrations ranging from 10-320 mg/mL, whereas no activity was observed against Candida albicans. Furthermore, docking-based computational analysis has revealed that beta-sitosterol and taraxerol are the plant's active constituents responsible for their antimicrobial and antioxidant activities.…
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