In vitro antioxidant activity of Lespedeza cuneata methanolic extracts

초록

In this study, the antioxidant activities of Lespedeza cuneata extract and fractions were evaluated by various in vitro assays, including electron donation ability (EDA) assay, reducing power, ferric thiocyanate (FTC) and thiobarbituric acid (TBA) tests. The electron donation ability of the ethylacetate fraction (95%) demonstrated stronger activity than butylated hydroxyanisole (16%). The ethylacetate fraction (OD700 = 0.68) also exhibited the strongest reducing power. Total phenol and flavonoid content were highest in the ethylacetate fraction (359.54 mg GAE/g and 209.63 mg QE/g, respectively). Methanolic extracts had greater anti-lipid peroxidative effects than that of an identical concentration of butylated hydroxyanisole. This result suggests the potential of development of useful natural antioxidants.

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