Metabolic variations, antioxidant potential and cytotoxic effects were investigated in the different plant parts like the leaf, stem, flower, pod, and root of C. majus L. using spectroscopic and chromatographic methods. Total phenolics and flavonoids were studied in the different parts of C. majus L., leaf showed higher flavonoid content (137.43 mg/g), while the pod showed the highest phenolic (23.67 mg/g) content, when compared with the stem, flower and root. In the ABTS antioxidant assay, the flower extract showed 57.94% effect, while the leaf, pod and root extract exhibited 39.10%, 36.08% and 28.88% activity, respectively. The pod and leaf extracts demonstrated the potential effect, exhibiting 45.46 and 41.61% activity, respectively, for the DPPH assay. Similar to the phosphomolybdenum assay, the flower revealed higher antioxidant activity (46.82%) than the other plant parts. The in vitro SRB assay facilitated evaluation of the cytotoxic effect against the HeLa and CaSki human cervical cancerous cells. The extract displayed dose-dependent inhibitory effect on both the cell lines. The highest cytotoxic effect was observed in the pod and flower extracts post 48 h of exposure at 1000 μg/mL. The results of C. majus L. offered new insights in the preliminary steps regarding the development of a high value product for phytomedicine applications though promising metabolic variations with antioxidant and anticancer potentials.
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