Comparison of Phytochemicals and Antioxidant Capacities of Ethanol Extracts from Different Parts of Elsholtzia beddomei C.B.Clarke ex Hook. f.
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Abstract
The objectives of this research were to investigate and compare the phytochemical screening and antioxidant capacity of crude ethanol extracts from flowers, leaves, stems and roots of Elsholtzia beddomei C.B. Clarke ex Hook. f. In phytochemical screening, phenolics, saponins, flavonoids, steroids, alkaloids, anthraquinones, diterpenes and triterpenes were found as constituents in all extracts. Determination of total phenolic and flavonoid contents was done using the Folin-Ciocalteu reagent and aluminum chloride colorimetric methods, respectively. It was found that the leaf extract had the highest total phenolic and flavonoid contents (22.345 ± 0.491 mg GAE/g dry sample and 52.730 ± 0.344 mg QE/g dry sample, respectively). The antioxidant activities were investigated using DPPH, ABTS, and FRAP methods. The study found that leaf extracts had the highest antioxidant activity using all three testing methods. The DPPH method and ABTS reported the results as an IC50 value (1.428 ± 0.302 and 96.433 ± 11.303 µg/mL, respectively). The reducing power was assessed for the electron-donating ability test using the FRAP method. The results were reported as a FRAP value equal to 5.004 ± 0.108 mg Fe2+/g dry sample. The results of this work indicated that the leaves of E. beddomei are good sources of phytochemicals and potential antioxidant activity.
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