Abstract
Present study aims to evaluate phytochemical and chromatographic profile, along with antioxidant and anti proliferative properties of Mimosa diplotricha ethanolic leaf extract. Qualitative screening of phytoconstituents by consecutive solvent extraction in increased polarity basis and standardization of potential extract based on phytochemical elution profile was done. Selected secondary metabolites like phenols, flavanoids, tannins and alkaloids were quantified in ethanolic extract. Chromatographic profile was determined by HPTLC and GC-MS analysis. In vitro antioxidant potential was assessed by DPPH, superoxide, nitric oxide, hydrogen peroxide and hydroxyl radical scavenging assay. Ferric-reducing antioxidant power assay (FRAP) and reducing potential of the respective extract were also determined. Anticancer potential was confirmed by cytotoxic screening in colorectal (HCT-116) cancer cell lines by MTT assay. Qualitative phytochemical analysis and chromatographic profile reveal a phytoconstituent rich profile for the ethanolic leaf extract. The amount of, phenols (56 ± 0.57 mg/g), flavanoids (27 ± 0.76 mg/g), tannins (33 ± 0.15 mg/g) were quantified as equivalent of gallic acid, quercetin and tannic acid standards respectively and alkaloids (2.51 ± 0.47 mg/g of extracted plant material) were expressed based on respective analysis. Results also reveal convincing antioxidant potential for respective extract. In vitro cytotoxicity confirmed by MTT assay represents an IC50 value of 97.82 µg/ml. From the above results it can be concluded that M.diplotricha has got pharmacologically significant phytoconstituents and therapeutic active ingredients as evident in HPTLC and GC-MS analysis. This is further supported by considerable antioxidant and anti proliferative properties observed in respective assays.
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